《第一篇》二进制部署高可用K8S集群v1.24.2及运维(亲测无坑)
K8S最新版本v1.24.2安装部署及维护汇总~
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1. 致谢
这篇文章参考了B站/CSDN/博客园等大神们的无私分享，在此表示感谢和致敬！
备注：请严格按照安装顺利执行，执行顺序不一致会出现各种异常~
2. 安装CentOS操作系统
模拟器：VMware-workstation-full-14.1.3-9474260 （单台笔记本 4C/16G/512G）
系统镜像：CentOS-7-x86_64-DVD-2009.iso 安装过程略~
3. 环境准备
K8S集群组件规划：
| 主机名 | IP地址 | 角色 | 系统 | 硬件 | 组件 |
|---|---|---|---|---|---|
| master_vip | 10.0.0.8 | – | - | - | ETCD版本(v3.5.4) |
| YonXin-SIT-Master01 | 10.0.0.1 | etcd,master,ingress,dns | CentOS7.9内核5.6.4 | 2C4G | DNS/Keepalived/ipvs/haproxy/kube-apiserver/kube-scheduler/kube-controller-manager/kubelet/kube-proxy/etcd/docker/containerd/runc |
| YonXin-SIT-Master02 | 10.0.0.2 | etcd,master,ingress | CentOS7.9内核5.6.4 | 2C4G | Keepalived/ipvs/haproxy/kube-apiserver/kube-scheduler/kube-controller-manager/kubelet/kube-proxy/etcd/docker/containerd/runc |
| YonXin-SIT-Node01 | 10.0.0.3 | etcd,node,harbor | CentOS7.9内核5.6.4 | 2C2G | kubelet/kube-proxy/etcd/docker/containerd/runc/ipvs/harbor |
| YonXin-SIT-Node02 | 10.0.0.4 | node,nginx | CentOS7.9内核5.6.4 | 2C2G | Kubelet/Kube-proxy/docker/containerd/runc/ipvs/nginx |
K8S集群网段规划：
| 主机网段 | Docker网段 | cluster-ip网段 | calico网段 |
|---|---|---|---|
| 10.0.0.0/24 | 172.17.0.1/16 | 10.96.0.0/16 | 10.244.0.0/16 |
3.1 主机名和IP地址配置
主机名以YonXin-SIT-Master01为例：
[root@server ~]# hostnamectl --static set-hostname "YonXin-SIT-Master01"
[root@server ~]# echo "10.0.0.1 YonXin-SIT-Master01 YonXin-SIT-Master01.hostname.com" >> /etc/hosts
IP地址以YonXin-SIT-Master01为例：
[root@YonXin-SIT-Master01 ~]# systemctl disable NetworkManager && service NetworkManager stop
[root@YonXin-SIT-Master01 ~]# vi /etc/sysconfig/network-scripts/ifcfg-bond0 #创建主备模式bond0接口
TYPE=Ethernet
DEVICE=bond0
ONBOOT=yes
BOOTPROTO=static
IPADDR=10.0.0.1
NETMASK=255.255.255.0
GATEWAY=10.0.0.254
BONDING_OPTS="mode=1 miimon=100"
[root@YonXin-SIT-Master01 ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33
TYPE=Ethernet
DEVICE=ens33
NAME=ens33
ONBOOT=yes
BOOTPROTO=none
MASTER=bond0
SLAVE=yes
NM_CONTROLLED=no
[root@YonXin-SIT-Master01 ~]# service network restart #重启网络状态
3.2 操作系统初始化
(1) 在YonXin-SIT-Master01上启用tomcat8服务
下载tomcat服务包安装并启动，下载初始化文件包放入tomcat的webapps目录解压~
Java8 百度网盘下载链接：https://pan.baidu.com/s/10fGFaP-hZq0fXJt3Z7a_Gw 提取码：6zu9
Tomcat8 百度网盘下载链接：https://pan.baidu.com/s/1ljnnXtcrndAxAF0L35qvyA 提取码：9qmc
初始化文件包百度网盘下载链接：https://pan.baidu.com/s/1O4VOHxSS5ZF8M9Ec32_dCg 提取码：d5hp
[root@YonXin-SIT-Master01 ~]# tar zxf Yonxin-oracle-jdk8-data.tar.gz
[root@YonXin-SIT-Master01 ~]# cd Yonxin-oracle-jdk8-data && ./install_jdk8.sh
[root@YonXin-SIT-Master01 ~]# tar zxf Yonxin-tomcat-8.5.59-data.tar.gz
[root@YonXin-SIT-Master01 ~]# cd Yonxin-tomcat-8.5.59-data && ./install_tomcat.sh
[root@YonXin-SIT-Master01 ~]# cd /data/download/ && unzip init-centos7-file.zip
(2) 所有服务器执行初始化脚本
[root@server ~]# vim /etc/resolv.conf
# Generated by NetworkManager
search hostname.com
nameserver 10.0.0.1
[root@server ~]# vim ~/init-centos7.sh
#!/usr/bin/bash
red_col="\e[1;31m"
green_col="\e[1;32m"
blue_col="\e[1;34m"
reset_col="\e[0m"
CURRENT_DIR=$(cd $(dirname $0); pwd)
AZQ_IP='10.0.0.1'
AZQ_PORT='8080'
IP_ADDR=`ip add |grep -Ev "lo:|docker|br-|veth|tun|cali" |grep 'inet ' |grep -Ev "127.0.0.1|/32" |awk '{print $2}' |awk -F'/' '{print $1}'`
##################################################################################################
use_root() {
#(0)使用root账号执行脚本
if [ $USER != "root" ];then
echo -e "$red_col 请使用root用户执行环境检查清单脚本 $reset_col"
exit 0
else
yum install -y vim lrzsz curl htop wget unzip lsof yum-utils sshpass >/dev/null 2>&1
wget http://mirrors.aliyun.com/repo/Centos-7.repo -O /etc/yum.repos.d/CentOS-Base.repo >/dev/null 2>&1
wget http://mirrors.aliyun.com/repo/epel-7.repo -O /etc/yum.repos.d/epel.repo >/dev/null 2>&1
fi
}
set_hostname() {
#(1)设置服务器主机名
echo -ne "$blue_col(1)是否需要本工具来为您设置主机名[yes/no]:$reset_col"
while read ooo
do
if [ "$ooo" == "y" -o "$ooo" == "Y" -o "$ooo" == "yes" ];then
echo -ne "$blue_col 请输入该主机规划的主机名（安装器主机请直接enter，使用installer名字）$reset_col"
read host_name
host_name=${host_name:-installer.hostname.com}
hostnamectl --static set-hostname $host_name
if [ `grep -c ${host_name} /etc/hosts` = "0" ];then
echo "${IP_ADDR} ${host_name}" >> /etc/hosts
fi
echo -e "$green_col 服务器名称设置完成！ $reset_col"
break
elif [ "$ooo" == "n" -o "$ooo" == "N" -o "$ooo" == "no" ];then
echo -e "$green_col 不进行服务器名称设置！ $reset_col"
break
else
echo -e "$red_col 输入错误，请重新输入$reset_col"
echo -ne "$blue_col 是否需要本工具来为您设置主机名[yes/no]: $reset_col"
fi
done
}
set_ssh() {
#(2)优化SSH登录
echo -e "$blue_col(2)优化SSH登录$reset_col"
if ! grep '^ *StrictHostKeyChecking no' /etc/ssh/ssh_config &> /dev/null
then
sed -ri '$a StrictHostKeyChecking no' /etc/ssh/ssh_config
fi
sed -ri 's/^[ \t]*#[ \t]*UseDNS.*yes/UseDNS no/' /etc/ssh/sshd_config
sed -ri 's/^[ \t]*GSSAPIAuthentication.*/GSSAPIAuthentication no/' /etc/ssh/sshd_config
echo -e "$green_col 优化SSH登录完成！ $reset_col"
systemctl restart sshd
}
set_sysctl() {
#(3)系统参数优化
echo -e "$blue_col(3)系统参数优化$reset_col"
if [ `grep -c '* soft nproc 65535' /etc/security/limits.conf` = "0" ];then
echo '* soft nproc 65535' >> /etc/security/limits.conf
fi
if [ `grep -c '* hard nproc 65535' /etc/security/limits.conf` = "0" ];then
echo '* hard nproc 65535' >> /etc/security/limits.conf
fi
if [ `grep -c '* soft nofile 204800' /etc/security/limits.conf` = "0" ];then
echo '* soft nofile 204800' >> /etc/security/limits.conf
fi
if [ `grep -c '* hard nofile 204800' /etc/security/limits.conf` = "0" ];then
echo '* hard nofile 204800' >> /etc/security/limits.conf
fi
if [ `grep -c '* soft memlock unlimited' /etc/security/limits.conf` = "0" ];then
echo '* soft memlock unlimited' >> /etc/security/limits.conf
fi
if [ `grep -c '* hard memlock unlimited' /etc/security/limits.conf` = "0" ];then
echo '* hard memlock unlimited' >> /etc/security/limits.conf
fi
ulimit -SHn 204800
ulimit -SHu 65535
if [ `grep -c 'kernel.sysrq = 0' /etc/sysctl.conf` = "0" ];then
echo '#关闭sysrq功能' >> /etc/sysctl.conf
echo 'kernel.sysrq = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'kernel.core_uses_pid = 1' /etc/sysctl.conf` = "0" ];then
echo '#core文件名中添加pid作为扩展名' >> /etc/sysctl.conf
echo 'kernel.core_uses_pid = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'kernel.msgmnb = 65536' /etc/sysctl.conf` = "0" ];then
echo '#修改消息队列长度' >> /etc/sysctl.conf
echo 'kernel.msgmnb = 65536' >> /etc/sysctl.conf
fi
if [ `grep -c 'kernel.msgmax = 65536' /etc/sysctl.conf` = "0" ];then
echo 'kernel.msgmax = 65536' >> /etc/sysctl.conf
fi
if [ `grep -c 'kernel.shmmax = 68719476736' /etc/sysctl.conf` = "0" ];then
echo '#设置最大内存共享段大小bytes' >> /etc/sysctl.conf
echo 'kernel.shmmax = 68719476736' >> /etc/sysctl.conf
fi
if [ `grep -c 'kernel.shmall = 4294967296' /etc/sysctl.conf` = "0" ];then
echo 'kernel.shmall = 4294967296' >> /etc/sysctl.conf
fi
if [ `grep -c 'vm.swappiness = 10' /etc/sysctl.conf` = "0" ];then
echo '#swap缓存' >> /etc/sysctl.conf
echo 'vm.swappiness = 10' >> /etc/sysctl.conf
fi
if [ `grep -c 'vm.max_map_count = 655365' /etc/sysctl.conf` = "0" ];then
echo 'vm.max_map_count = 655365' >> /etc/sysctl.conf
fi
if [ `grep -c 'fs.inotify.max_user_watches = 8192000' /etc/sysctl.conf` = "0" ];then
echo '#修改最大文件同步数默认为8192' >> /etc/sysctl.conf
echo 'fs.inotify.max_user_watches = 8192000' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.core.netdev_max_backlog = 262144' /etc/sysctl.conf` = "0" ];then
echo '#每个网络接口接收数据包的速率比内核处理这些包的速率快时,允许送到队列的数据包的最大数目' >> /etc/sysctl.conf
echo 'net.core.netdev_max_backlog = 262144' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.core.somaxconn = 65535' /etc/sysctl.conf` = "0" ];then
echo '#listen挂起请求的最大数量，默认128' >> /etc/sysctl.conf
echo 'net.core.somaxconn = 65535' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.core.rps_sock_flow_entries = 65535' /etc/sysctl.conf` = "0" ];then
echo 'net.core.rps_sock_flow_entries = 65535' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.core.wmem_default = 8388608' /etc/sysctl.conf` = "0" ];then
echo 'net.core.wmem_default = 8388608' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.core.rmem_max = 16777216' /etc/sysctl.conf` = "0" ];then
echo 'net.core.rmem_max = 16777216' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.core.wmem_max = 16777216' /etc/sysctl.conf` = "0" ];then
echo 'net.core.wmem_max = 16777216' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.ip_forward = 1' /etc/sysctl.conf` = "0" ];then
echo '#开启内核转发' >> /etc/sysctl.conf
echo 'net.ipv4.ip_forward = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.ip_default_ttl = 64' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.ip_default_ttl = 64' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.conf.all.send_redirects = 0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.conf.all.send_redirects = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.conf.default.send_redirects = 0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.conf.default.send_redirects = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.conf.all.rp_filter = 1' /etc/sysctl.conf` = "0" ];then
echo '#开启反向路径过滤' >> /etc/sysctl.conf
echo 'net.ipv4.conf.all.rp_filter = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.conf.default.rp_filter = 1' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.conf.default.rp_filter = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.inet_peer_maxttl = 600' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.inet_peer_maxttl = 600' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.inet_peer_minttl = 120' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.inet_peer_minttl = 120' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.inet_peer_threshold = 65664' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.inet_peer_threshold = 65664' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.conf.all.accept_source_route = 0' /etc/sysctl.conf` = "0" ];then
echo '#处理无源路由的包' >> /etc/sysctl.conf
echo 'net.ipv4.conf.all.accept_source_route = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.conf.all.accept_redirects=0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.conf.all.accept_redirects=0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.conf.default.accept_source_route = 0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.conf.default.accept_source_route = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.conf.all.arp_ignore = 1' /etc/sysctl.conf` = "0" ];then
echo '#只回答目标IP地址是来访网络接口本地地址的ARP查询请求' >> /etc/sysctl.conf
echo 'net.ipv4.conf.all.arp_ignore = 1' >> /etc/sysctl.conf
echo "1" > /proc/sys/net/ipv4/conf/all/arp_ignore
fi
if [ `grep -c 'net.ipv4.conf.all.arp_announce = 2' /etc/sysctl.conf` = "0" ];then
echo '#对网络接口上本地IP地址发出的ARP回应' >> /etc/sysctl.conf
echo 'net.ipv4.conf.all.arp_announce = 2' >> /etc/sysctl.conf
echo "2" > /proc/sys/net/ipv4/conf/all/arp_announce
fi
if [ `grep -c 'net.ipv4.conf.all.force_igmp_version = 2' /etc/sysctl.conf` = "0" ];then
echo '#更改IGMP版本为V2' >> /etc/sysctl.conf
echo 'net.ipv4.conf.all.force_igmp_version = 2' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.cipso_cache_bucket_size = 10' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.cipso_cache_bucket_size = 10' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.cipso_cache_enable = 1' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.cipso_cache_enable = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.cipso_rbm_optfmt = 0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.cipso_rbm_optfmt = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.cipso_rbm_strictvalid = 1' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.cipso_rbm_strictvalid = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_max_tw_buckets = 6000' /etc/sysctl.conf` = "0" ];then
echo '#timewait的数量,默认180000' >> /etc/sysctl.conf
echo 'net.ipv4.tcp_max_tw_buckets = 6000' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_moderate_rcvbuf = 1' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_moderate_rcvbuf = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_mtu_probing = 0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_mtu_probing = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_no_metrics_save = 0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_no_metrics_save = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_orphan_retries = 0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_orphan_retries = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_reordering = 3' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_reordering = 3' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_retrans_collapse = 1' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_retrans_collapse = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_retries1 = 2' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_retries1 = 2' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_retries2 = 2' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_retries2 = 2' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_rfc1337 = 0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_rfc1337 = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_sack = 1' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_sack = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_slow_start_after_idle = 1' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_slow_start_after_idle = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_stdurg = 0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_stdurg = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.ip_local_port_range = 1024 65000' /etc/sysctl.conf` = "0" ];then
echo '#允许系统打开的端口范围' >> /etc/sysctl.conf
echo 'net.ipv4.ip_local_port_range = 1024 65000' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.ip_nonlocal_bind = 0' /etc/sysctl.conf` = "0" ];then
echo '#开启允许绑定非本机的IP' >> /etc/sysctl.conf
echo 'net.ipv4.ip_nonlocal_bind = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.ip_no_pmtu_disc = 0' /etc/sysctl.conf` = "0" ];then
echo '#系统能创建的最大tcp连接数' >> /etc/sysctl.conf
echo 'net.ipv4.ip_no_pmtu_disc = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_abort_on_overflow = 0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_abort_on_overflow = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_adv_win_scale = 2' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_adv_win_scale = 2' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_app_win = 31' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_app_win = 31' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_base_mss = 1024' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_base_mss = 1024' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_dsack = 1' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_dsack = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_ecn = 2' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_ecn = 2' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_fack = 1' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_fack = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_frto = 2' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_frto = 2' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_low_latency = 0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_low_latency = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_tw_recycle = 0' /etc/sysctl.conf` = "0" ];then
echo '#启用timewait 快速回收' >> /etc/sysctl.conf
echo 'net.ipv4.tcp_tw_recycle = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_tw_reuse = 1' /etc/sysctl.conf` = "0" ];then
echo '#开启重用,允许将TIME-WAIT sockets 重新用于新的TCP 连接' >> /etc/sysctl.conf
echo 'net.ipv4.tcp_tw_reuse = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_syncookies = 1' /etc/sysctl.conf` = "0" ];then
echo '#开启SYN洪水攻击保护' >> /etc/sysctl.conf
echo 'net.ipv4.tcp_syncookies = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_max_orphans = 2000' /etc/sysctl.conf` = "0" ];then
echo '#限制仅仅是为了防止简单的DoS 攻击' >> /etc/sysctl.conf
echo 'net.ipv4.tcp_max_orphans = 2000' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_max_ssthresh = 0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_max_ssthresh = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_max_syn_backlog = 128' /etc/sysctl.conf` = "0" ];then
echo '#未收到客户端确认信息的连接请求的最大值' >> /etc/sysctl.conf
echo 'net.ipv4.tcp_max_syn_backlog = 128' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_timestamps = 1' /etc/sysctl.conf` = "0" ];then
echo '#时间戳可以避免序列号的卷绕,一个1Gbps的链路肯定会遇到以前用过的序列号,时间戳能够让内核接受这种“异常”的数据包' >> /etc/sysctl.conf
echo 'net.ipv4.tcp_timestamps = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_tso_win_divisor = 3' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_tso_win_divisor = 3' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_synack_retries = 2' /etc/sysctl.conf` = "0" ];then
echo '#内核放弃建立连接之前发送SYNACK 包的数量' >> /etc/sysctl.conf
echo 'net.ipv4.tcp_synack_retries = 2' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_syn_retries = 2' /etc/sysctl.conf` = "0" ];then
echo '#内核放弃建立连接之前发送SYN 包的数量' >> /etc/sysctl.conf
echo 'net.ipv4.tcp_syn_retries = 2' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_thin_dupack = 0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_thin_dupack = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_thin_linear_timeouts = 0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_thin_linear_timeouts = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_fin_timeout = 1' /etc/sysctl.conf` = "0" ];then
echo '#保持在FIN-WAIT-2状态的时间' >> /etc/sysctl.conf
echo 'net.ipv4.tcp_fin_timeout = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_keepalive_time = 2' /etc/sysctl.conf` = "0" ];then
echo '#当keepalive起用的时候,TCP发送keepalive消息的频度,缺省是2小时' >> /etc/sysctl.conf
echo 'net.ipv4.tcp_keepalive_time = 2' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_keepalive_intvl = 2' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_keepalive_intvl = 2' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_keepalive_probes = 3' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_keepalive_probes = 3' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.ipfrag_high_thresh = 262144' /etc/sysctl.conf` = "0" ];then
echo '#IP分片' >> /etc/sysctl.conf
echo 'net.ipv4.ipfrag_high_thresh = 262144' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.ipfrag_low_thresh = 196608' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.ipfrag_low_thresh = 196608' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.ipfrag_max_dist = 64' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.ipfrag_max_dist = 64' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.ipfrag_secret_interval = 600' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.ipfrag_secret_interval = 600' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.ipfrag_time = 30' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.ipfrag_time = 30' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_sack = 1' /etc/sysctl.conf` = "0" ];then
echo '#关闭tcp_sack, 通过有选择地应答乱序接收到的报文来提高性能' >> /etc/sysctl.conf
echo 'net.ipv4.tcp_sack = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_window_scaling = 1' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_window_scaling = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_workaround_signed_windows = 0' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_workaround_signed_windows = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_rmem = 4096 8388608 16777216' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_rmem = 4096 8388608 16777216' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_wmem = 4096 8388608 16777216' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.tcp_wmem = 4096 8388608 16777216' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.tcp_mem = 94500000 915000000 927000000' /etc/sysctl.conf` = "0" ];then
echo '#确定TCP栈应该如何反映内存使用；每个值的单位都是内存页（通常是 4KB）' >> /etc/sysctl.conf
echo '#第一个值是内存使用的下限,第二个值是内存压力模式开始对缓冲区使用应用压力的上限' >> /etc/sysctl.conf
echo '#第三个值是内存上限。在这个层次上可以将报文丢弃，从而减少对内存的使用' >> /etc/sysctl.conf
echo 'net.ipv4.tcp_mem = 94500000 915000000 927000000' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.icmp_echo_ignore_all = 0' /etc/sysctl.conf` = "0" ];then
echo '#是否禁止系统回复ICMP包,其实就是禁PING' >> /etc/sysctl.conf
echo 'net.ipv4.icmp_echo_ignore_all = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.igmp_max_memberships = 20' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.igmp_max_memberships = 20' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.igmp_max_msf = 10' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.igmp_max_msf = 10' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.icmp_echo_ignore_broadcasts = 1' /etc/sysctl.conf` = "0" ];then
echo '#避免放大攻击' >> /etc/sysctl.conf
echo 'net.ipv4.icmp_echo_ignore_broadcasts = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.icmp_errors_use_inbound_ifaddr = 0' /etc/sysctl.conf` = "0" ];then
echo '#开启恶意icmp错误消息保护' >> /etc/sysctl.conf
echo 'net.ipv4.icmp_errors_use_inbound_ifaddr = 0' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.icmp_ignore_bogus_error_responses = 1' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.icmp_ignore_bogus_error_responses = 1' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.icmp_ratelimit = 1000' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.icmp_ratelimit = 1000' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.icmp_ratemask = 6168' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.icmp_ratemask = 6168' >> /etc/sysctl.conf
fi
if [ `grep -c 'net.ipv4.xfrm4_gc_thresh = 4194304' /etc/sysctl.conf` = "0" ];then
echo 'net.ipv4.xfrm4_gc_thresh = 4194304' >> /etc/sysctl.conf
fi
sysctl -p >/dev/null 2>&1
echo -e "$green_col 系统参数优化完成！ $reset_col"
}
set_dynmotd() {
#(4)SSH登录信息提示
echo -e "$blue_col(4)SSH登录信息提示$reset_col"
flag=`curl -I "http://${AZQ_IP}:${AZQ_PORT}" 2>&1 |grep -c 'HTTP/1.1 200'`
if [ "${flag}" == "1" ];then
if [ ! -f /usr/local/bin/dynmotd ];then
curl -s http://${AZQ_IP}:${AZQ_PORT}/ssh_login_tip.tar.gz -o ssh_login_tip.tar.gz && tar zxf ssh_login_tip.tar.gz && tar zxf cowsay.tar.gz && cp -rf cowsay/usr/bin/cowsay /usr/bin/ && cp -rf cowsay/usr/share/* /usr/share/ && tar zxf figlet.tar.gz && cp -rf figlet/usr/bin/figlet /usr/bin/ && cp -rf figlet/usr/share/* /usr/share/ && cp -rf color.awk /usr/local/bin/ && chmod 755 /usr/local/bin/color.awk && cp -rf dynmotd /usr/local/bin/dynmotd && chmod 755 /usr/local/bin/dynmotd && echo '###########################################################' >> /etc/profile && echo '/usr/local/bin/dynmotd' >> /etc/profile && source /etc/profile >/dev/null 2>&1
echo -e "$green_col SSH登录信息提示已配置，满足要求$reset_col"
else
echo -e "$green_col SSH登录信息提示已配置，满足要求$reset_col"
fi
else
echo -e "$red_col =>请启动安装器后执行命令[curl -s http://${AZQ_IP}:${AZQ_PORT}/ssh_login_tip.tar.gz -o ssh_login_tip.tar.gz && tar zxf ssh_login_tip.tar.gz && tar zxf cowsay.tar.gz && cp -rf cowsay/usr/bin/cowsay /usr/bin/ && cp -rf cowsay/usr/share/* /usr/share/ && tar zxf figlet.tar.gz && cp -rf figlet/usr/bin/figlet /usr/bin/ && cp -rf figlet/usr/share/* /usr/share/ && cp -rf color.awk /usr/local/bin/ && chmod 755 /usr/local/bin/color.awk && cp -rf dynmotd /usr/local/bin/dynmotd && chmod 755 /usr/local/bin/dynmotd && echo '###########################################################' >> /etc/profile && echo '/usr/local/bin/dynmotd' >> /etc/profile && source /etc/profile $reset_col]完成配置！"
fi
}
check_volume() {
#(5)检查根分区的大小
echo -e "$blue_col(5)检查根分区的大小$reset_col"
gen_size=`df -Th |grep /$ |awk '{print $3}' |awk -F"G" '{print $1}' |awk -F"." '{print $1}'`
if [ "$gen_size" -lt 48 ];then
echo -e "$red_col 根分区的空间是$gen_size，不足50G$reset_col"
else
echo -e "$green_col 根分区的空间是$gen_size，满足要求$reset_col"
fi
}
check_selinux() {
#(6)检查selinux并关闭
echo -e "$blue_col(6)检查selinux并关闭$reset_col"
value=`getenforce`
if [ "$value" == "Disabled" ];then
echo -e "$green_col selinux已关闭$reset_col"
else
echo -e "$red_col selinux未关闭，将为您关闭selinux$reset_col"
setenforce 0
sed -ri 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
sed -ri 's/SELINUX=permissive/SELINUX=disabled/' /etc/selinux/config
fi
}
check_timezone() {
#(7)检查时区
echo -e "$blue_col(7)检查时区$reset_col"
time_zone=`timedatectl |grep "Time zone" |awk '{print $3}'`
if [ "$time_zone" == "Asia/Shanghai" ];then
echo -e "$green_col 时区是Asia/Shanghai，符合要求 $reset_col"
else
echo -e "$red_col 时区是$time_zone，将为您设置为Asia/Shanghai $reset_col"
timedatectl set-timezone Asia/Shanghai
fi
}
check_mtu() {
#(8)检查mtu值
echo -e "$blue_col(8)检查mtu值$reset_col"
need_mtu=1500
fact_mtu=`ip a |grep "^2:" |awk -F"mtu " '{print $2}' |awk '{print $1}'`
if [ "$fact_mtu" -eq "$need_mtu" ];then
echo -e "$green_col mtu值是1500,符合要求 $reset_col"
else
echo -e "$red_col mtu值不是1500,而是$fact_mtu,请注意 $reset_col"
fi
}
check_LANG() {
#(9)检查字符集
echo -e "$blue_col(9)检查字符集$reset_col"
if [ "$LANG" == "zh_CN.utf8" ];then
echo -e "$green_col 字符集是zh_CN.utf8，符合要求 $reset_col"
else
echo -e "$red_col 字符集是$LANG，建议是zh_CN.utf8$reset_col"
echo -en "$blue_col 是否需要为您设置为中文字符集[yes/no]: $reset_col"
while read var
do
if [ "$var" == "y" -o "$var" == "Y" -o "$var" == "yes" ];then
export LANG=zh_CN.utf8
echo "LANG=zh_CN.utf8" > /etc/locale.conf
echo "LANG=zh_CN.utf8" > /etc/profile.d/locale.sh
break
elif [ "$var" == "n" -o "$var" == "N" -o "$var" == "no" ];then
break
else
echo -e "$red_col 输入错误，请重新输入$reset_col"
fi
done
fi
}
set_fonts() {
#(10)安装中文字体
echo -e "$blue_col(10)安装中文字体$reset_col"
yum install -y net-tools gcc gcc-c++ automake make kernel-devel m4 ncurses-devel unixODBC-devel crontabs chrony >/dev/null 2>&1
yum install -y bind bind-utils lua lua-devel pcre pcre-devel zlib zlib-devel openssl openssl-devel lvm2 gd-devel mkfontscale rsync >/dev/null 2>&1
yum install -y python-devel perl-devel policycoreutils-python glibc-common xorg-x11-xauth tigervnc-server libXtst postgresql-libs >/dev/null 2>&1
yum install -y libXrender libXft libXtst xorg-x11-xauth kde-l10n-Chinese liberation-fonts-common cjkuni-uming-fonts fontconfig >/dev/null 2>&1
#添加字体：
flag=`curl -I "http://${AZQ_IP}:${AZQ_PORT}" 2>&1 |grep -c 'HTTP/1.1 200'`
if [ "${flag}" == "1" ];then
if [ ! -d /usr/share/fonts/MicrosoftYahei -o ! -d /usr/share/fonts/song ];then
curl -s http://${AZQ_IP}:8080/fonts_2.tar.gz -o fonts_2.tar.gz && tar zxf fonts_2.tar.gz -C /usr/share/fonts && cd /usr/share/fonts && mkfontscale && mkfontdir && fc-cache && fc-list :lang=zh >/dev/null 2>&1
echo -e "$green_col MicrosoftYahei和song字体已经安装,符合要求！"
else
echo -e "$green_col MicrosoftYahei和song字体已经安装,符合要求！"
fi
else
echo -e "$red_col =>请启动安装器后执行命令[curl -s http://${AZQ_IP}:${AZQ_PORT}/fonts_2.tar.gz -o fonts_2.tar.gz && tar zxf fonts_2.tar.gz -C /usr/share/fonts && cd /usr/share/fonts && mkfontscale && mkfontdir && fc-cache && fc-list :lang=zh]完成配置！$reset_col"
fi
}
check_ipnet() {
#(11)检查物理地址的网段
echo -e "$blue_col(11)检查物理地址的网段$reset_col"
ip_net=`ip add |grep "inet " |grep -Ev "127.0.0.1|/32" |awk '{print $2}' |awk -F'/' '{print $1}' |awk -F'.' '{print $1"."$2}'`
if [ "$ip_net" == "172.23" -o "$ip_net" == "172.17" -o "$ip_net" == "10.96" ]
then
echo -e "$red_col 物理地址网段是$ip_net,请确保没有占用172.23、172.17和10.96网段"
else
echo -e "$green_col 物理地址网段是$ip_net,符合要求"
fi
}
check_network() {
#(12)检查主机是否能连外网
echo -e "$blue_col(12)检查主机是否能连外网$reset_col"
if ! ping -c2 www.baidu.com &>/dev/null
then
echo -e "$red_col 请确保平台安装期间可以联网，安装完成之后可以根据需求关闭外网$reset_col"
else
echo -e "$green_col 主机可以连外网，符合要求$reset_col"
fi
}
check_firewalld() {
#(13)关闭防火墙
echo -e "$blue_col(13)检查firewalld防火墙$reset_col"
if systemctl status firewalld &>/dev/null
then
echo -e "$red_col 关闭firewalld防火墙$reset_col"
systemctl stop firewalld &>/dev/null
systemctl disable firewalld &>/dev/null
elif systemctl status iptables &>/dev/null
then
echo -e "$red_col 关闭iptables防火墙$reset_col"
systemctl stop iptables &>/dev/null
systemctl disable iptables &>/dev/null
else
echo -e "$green_col 防火墙已关闭，符合要求$reset_col"
fi
}
check_swap() {
#(14)检查swap交换分区
echo -e "$blue_col(14)检查swap交换分区$reset_col"
swap_size=`free -m |awk '/^Swap/{print $2}'`
if [ $swap_size -eq 0 ];then
echo -e "$green_col swap交换分区是关闭的状态，符合要求$reset_col"
else
echo -e "$green_col swap交换分区是开启的状态，需要关闭$reset_col"
while read -p " 是否需要为您关闭交换分区[y/yes]: " var
do
if [ "$var" == "y" -o "$var" == "Y" -o "$var" == "yes" ];then
swapoff -a
sed -ri '/swap/d' /etc/fstab
break
elif [ "$var" == "n" -o "$var" == "N" -o "$var" == "no" ];then
break
else
echo -e "$red_col 输入错误，请重新输入$reset_col"
fi
done
fi
}
check_cpu() {
#(15)检查cpu个数
echo -e "$blue_col(15)检查cpu个数$reset_col"
cpu_num=`lscpu |grep ^'CPU(s):' |awk '{print $2}'`
if [ $cpu_num -lt 8 ];then
echo -e "$red_col CPU个数为$cpu_num,太低$reset_col"
else
echo -e "$green_col CPU个数为$cpu_num,请根据部署方案规划CPU资源"
fi
}
check_mem() {
#(16)检查内存大小
echo -e "$blue_col(16)检查内存大小$reset_col"
mem_size=`free -m |awk '/^Mem/{print $2}'`
if [ $mem_size -lt 15000 ];then
echo -e "$red_col 内存大小为$mem_size,太低$reset_col"
else
echo -e "$green_col 内存大小为$mem_size,请根据部署方案规划内存资源"
fi
}
check_passwd() {
#(17)检查/etc/passwd和/etc/group文件属性
echo -e "$blue_col(17)检查/etc/passwd和/etc/group文件属性$reset_col"
for name in /etc/passwd /etc/group
do
i=`lsattr $name |awk '{print $1}'`
if [ "$i" == "-------------e--" -o "$i" == "----------------" ];then
echo -e "$green_col $name文件属性符合要求$reset_col"
else
echo -e "$red_col $name文件属性不符合要求,为您去掉文件属性$reset_col"
chattr -i /etc/passwd /etc/group
chattr -a /etc/passwd /etc/group
fi
done
}
check_umask() {
#(18)检查root用户的umask值
echo -e "$blue_col(18)检查root用户的umask值$reset_col"
if [ `umask` -eq 0022 ];then
echo -e "$green_col root的umask值是0022，符合要求$reset_col"
else
echo -e "$red_col root的umask值不是0022，直接为您修改$reset_col"
umask 0022
line_num=`grep -n 'umask' /etc/profile |tail -1 |awk -F":" '{print $1}'`
line_value=`grep -n 'umask' /etc/profile |tail -1 |awk -F":" '{print $2}' |awk '{print $2}'`
sed -ri "$line_num s/$line_value/022/" /etc/profile
fi
}
check_python() {
#(19)检查python版本
echo -e "$blue_col(19)检查python版本$reset_col"
var=`python -V 2>&1 |awk -F"." '{print $1"."$2}'`
var1=`python -V 2>&1`
if [ "$var" == "Python 2.7" ];then
echo -e "$green_col python的版本是2.7，符合要求$reset_col"
else
echo -e "$red_col python的版本$var1，不符合要求$reset_col"
fi
}
check_openssl() {
#(20)检查openssl版本
echo -e "$blue_col(20)检查openssl版本$reset_col"
ssh_var=`ssh -V 2>&1 |awk -F", " '{print $1}' |awk -F"_" '{print $2}'`
ssh_var1=`python -V 2>&1`
if [ "$ssh_var" == "7.4p1" ];then
echo -e "$green_col python的版本是7.4p1，符合要求$reset_col"
else
echo -e "$red_col python的版本$ssh_var1，不符合要求，可能导致安装器添加主机失败！$reset_col"
fi
}
check_http() {
#(21)检查本机是否支持127.0.0.1:port的方式访问自身服务
echo -e "$blue_col(21)检查本机是否支持127.0.0.1:port的方式访问自身服务，请稍等$reset_col"
if ss -anlt |awk '{print $4}' |awk -F":" '{print $NF}' |sort |uniq |grep 80 &>/dev/null
then
curl -I http://127.0.0.1:80 &>/dev/null
if [ $? -ne 0 ];then
echo -e "$red_col curl -I http://127.0.0.1:80命令未执行成功，请确认本机是否支持127.0.0.1:port的方式访问自身服务$reset_col"
else
echo -e "$green_col 本机支持127.0.0.1:port的方式访问自身服务，符合要求$reset_col"
fi
else
if yum -y install httpd &>/dev/null || yum -y install nginx &>/dev/null
then
systemctl start httpd &>/dev/null || systemctl start nginx &>/dev/null
curl -I http://127.0.0.1:80 &>/dev/null
if [ $? -ne 0 ];then
echo -e "$red_col curl -I http://127.0.0.1:80命令未执行成功，请确认本机是否支持127.0.0.1:port的方式访问自身服务$reset_col"
else
echo -e "$green_col 本机支持127.0.0.1:port的方式访问自身服务，符合要求$reset_col"
fi
num=`yum history |egrep '^ *[0-9]' |head -1 |awk '{print $1}'`
yum -y history undo $num &>/dev/null
else
echo -e "$red_col 无法确认机是否支持127.0.0.1:port的方式访问自身服务，请自行检查$reset_col"
fi
fi
}
data_size() {
disk_name=`echo $disk_name |sed -r 's#/dev/(.*)#\1#'`
disk=/dev/$disk_name
disk_size=`lsblk |grep $disk_name |awk '{print $4}'`
if lsblk |grep $disk_name |awk '{print $4}' |grep T$ &>/dev/null
then
echo -e "$green_col 数据盘的大小为$disk_size,符合要求$reset_col"
elif lsblk |grep $disk_name |awk '{print $4}' |grep M$ &>/dev/null
then
echo -e "$red_col 数据盘的大小为$disk_size,严重不符合要求$reset_col"
elif lsblk |grep $disk_name |awk '{print $4}' |grep G$ &>/dev/null
then
size=`lsblk |grep $disk_name |awk '{print $4}' |grep G$ |awk -F"G" '{print $1}' |awk -F"." '{print $1}'`
if [ $size -lt 200 ];then
echo -e "$red_col 数据盘的大小为$disk_size,不符合要求$reset_col"
else
echo -e "$green_col 数据盘的大小为$disk_size,符合要求$reset_col"
fi
else
echo -e "$red_col 未获取到数据盘的大小$reset_col"
fi
}
lvm_mount() {
echo -e "$blue_col将数据盘格式化并挂载到/data $reset_col"
lvchange -ay /dev/vg_data/lv_data &> /dev/null
if [ -e /dev/vg_data/lv_data ];then
mkdir -p /data
mkfs.xfs -f /dev/vg_data/lv_data
UUID=`blkid /dev/vg_data/lv_data |awk '{print $2}' |sed -r 's/"//g'`
if ! awk '{print $2}' /etc/fstab |grep -E "^/data$|^/data/$" &>/dev/null
then
echo "$UUID /data xfs defaults 0 0" >> /etc/fstab
mount -a
fi
else
echo -e "$red_col没有发现对应的lvm $reset_col"
fi
}
check_datadisk() {
#(22)检查数据盘大小或挂载数据盘
echo -e "$blue_col(22)检查数据盘大小$reset_col"
echo -e "$blue_col 检查数据盘是否存在且是独立磁盘$reset_col"
if ! lsblk |grep disk |egrep -v "vda|sda" &>/dev/null
then
echo -e "red_col 未检测到数据盘，请为主机添加独立数据盘后重新执行脚本，否则无法安装环境$reset_col"
exit
else
disk_name=`lsblk |grep disk |egrep -v "vda|sda" |awk '{print $1}' |head -1`
echo -ne "$green_col 检测到 $disk_name ，请确认这是否是要挂载到/data的硬盘或分区[yes|no]: $reset_col"
while read aaa
do
if [ "$aaa" == "y" -o "$aaa" == "Y" -o "$aaa" == "yes" ];then
data_size
break
elif [ "$aaa" == "n" -o "$aaa" == "N" -o "$aaa" == "no" ];then
echo -ne "$blue_col请输入您要挂载到/data目录的数据盘名或分区(如:vdc1，默认是vdc): "
read disk_name
disk_name=${disk_name:-vdc}
data_size
break
else
echo -e "$red_col 输入错误，请重新输入$reset_col"
echo -ne "$green_col 检测到 $disk_name ，请确认这是否是要挂载到/data的硬盘或分区[yes|no]: $reset_col"
fi
done
fi
echo -e "$blue_col 检查数据盘是否以逻辑卷形式挂载$reset_col"
if df -Th |egrep '^/dev/mapper/.*/data$' &>/dev/null
then
echo -e "$green_col 数据盘已做成lvm,并挂载到/data,符合要求$reset_col"
elif df -Th |grep /data$ &>/dev/null
then
echo -e "$red_col 数据盘已挂载到/data，但未做成lvm,建议做成lvm $reset_col"
else
echo -e "$red_col 数据盘未挂载到/data，做其他检查，请稍等$reset_col"
if rpm -q lvm2 &>/dev/null
then
vg_name=`pvs |grep $disk |awk '{print $2}'`
if [ -z "$vg_name" ];then
echo -e "$red_col 数据盘未做成pv,为您制作并挂载到/data $reset_col"
pvcreate -f $disk && vgcreate vg_data $disk && lvcreate -l 100%FREE -n lv_data vg_data
lvm_mount
else
lvm_num=`vgs |grep $vg_name |awk '{print $3}'`
if [ -z "$lvm_num" ];then
echo -e "$red_col 数据盘中有pv，无vg和lvm，请制作vg和lvm后将其永久挂载到/data $reset_col"
else
if [ $lvm_num -gt 0 ];then
echo -e "$red_col 数据盘中有lvm，请确认后将其永久挂载到/data $reset_col"
else
echo -e "$red_col 数据盘中有vg，但无lvm，请制作后将其永久挂载到/data $reset_col"
fi
fi
fi
else
yum makecache &>/dev/null && yum -y install lvm2 &>/dev/null
if [ $? -ne 0 ];then
echo -e "$red_col 无法使用yum安装lvm2，请安装后重试$reset_col"
exit
fi
echo -en "$blue_col 是否将数据盘做成lvm，并格式化挂载到/data[yes/no]: $reset_col"
while read var
do
if [ "$var" == "y" -o "$var" == "Y" -o "$var" == "yes" ];then
pvcreate -f $disk && vgcreate -f vg_data $disk && lvcreate -l 100%FREE -n lv_data vg_data
lvm_mount
break
elif [ "$var" == "n" -o "$var" == "N" -o "$var" == "no" ];then
break
else
echo -e "$red_col 输入错误，请重新输入$reset_col"
fi
done
fi
fi
echo -e "$blue_col 检测是否存在xfs文件系统格式的数据盘挂载$reset_col"
filesystem=`df -Th |grep /data$ |awk '{print $2}'`
if [ "$filesystem" == "xfs" ];then
echo -e "$green_col 数据盘是xfs文件系统格式，符合要求$reset_col"
else
echo -e "$red_col 未检测到xfs文件系统格式的数据盘挂载，请确认$reset_col"
fi
mkdir -p /data
echo -e "$blue_col 检测数据盘是否永久挂载$reset_col"
if ! awk '{print $2}' /etc/fstab |grep -E "^/data$|^/data/$" &>/dev/null
then
echo -e "$red_col 未检测到数据盘的永久挂载，请您永久挂载$reset_col"
else
result=$(mount -a 2>&1)
if [ -z "$result" ];then
echo -e "$green_col 数据盘已永久挂载，符合要求$reset_col"
else
echo -e "$red_col 数据盘已永久挂载，但/etc/fstab文件中有语法错误$reset_col"
fi
fi
}
check_root() {
#(23)检查本机是否禁用了root的远程登录
echo -e "$blue_col(23)检查本机是否禁用了root的远程登录$reset_col"
echo -e "$blue_col 如果发现脚本停留在输密码处，请直接敲三次enter，网络内定是禁用了root的远程登录，请检查 $reset_col"
if egrep '^ *PermitRootLogin *no' /etc/ssh/sshd_config &>/dev/null
then
echo -e "$red_col 检查到本机已禁用了root的远程登录，不符合要求，为您关闭$reset_col"
sed -ri '/^ *PermitRootLogin *no/d' /etc/ssh/sshd_config
systemctl restart sshd &>/dev/null
else
if [ ! -f ~/.ssh/id_rsa ];then
ssh-keygen -t RSA -N '' -f ~/.ssh/id_rsa &>/dev/null
fi
str=`cat ~/.ssh/id_rsa.pub |awk '{print $2}'`
touch ~/.ssh/authorized_keys && chmod 600 ~/.ssh/authorized_keys
if ! grep $str ~/.ssh/authorized_keys &>/dev/null
then
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
fi
if ssh 127.0.0.1 'date' &>/dev/null
then
echo -e "$green_col 本机可以使用root远程连接自己，符合要求$reset_col"
echo -e "$red_col 但还是无法排除网络是否禁用了root的远程登录，请谨慎$reset_col"
fi
fi
}
check_kernel() {
#(24)升级服务器内核版本
echo -e "$blue_col(24)检查内核版本$reset_col"
need_kernel="5.6"
fact_kernel=`uname -r |awk -F"." '{print $1"."$2}'`
fact_kernel1=`uname -r |awk -F"." '{print $1"."$2}'`
zhu=`uname -r |awk -F"." '{print $1}'`
ci=`uname -r |awk -F"." '{print $2}'`
if [ "$fact_kernel" == "$need_kernel" ];then
echo -e "$green_col 内核版本$fack_kernel1,符合大版本$need_kernel的要求 $reset_col"
elif [ $zhu -lt 5 ] || [ $zhu -eq 5 -a $ci -lt 6 ];then
echo -e "$red_col 内核大版本是$fact_kernel，小于$need_kernel,需要升级内核 $reset_col"
flag=`curl -I "http://${AZQ_IP}:${AZQ_PORT}" 2>&1 |grep -c 'HTTP/1.1 200'`
if [ "${flag}" == "1" ];then
echo -e "$green_col 操作系统即将升级到5.6.4版本...$reset_col"
curl http://${AZQ_IP}:${AZQ_PORT}/kernel_update-5.6.4_x86_64.tar.gz -o kernel_update-5.6.4_x86_64.tar.gz >/dev/null 2>&1 && tar -zxf kernel_update-5.6.4_x86_64.tar.gz >/dev/null 2>&1 && bash kernel_update.sh
else
echo -e "$red_col =>启动安装器后执行命令[curl -s http://${AZQ_IP}:8080/kernel_update-5.6.4_x86_64.tar.gz -o kernel_update-5.6.4_x86_64.tar.gz && tar -zxf kernel_update-5.6.4_x86_64.tar.gz && bash kernel_update.sh]可以自动升级内核到5.6.4版本！$reset_col"
fi
fi
echo -e "$blue_col 检查操作系统版本$reset_col"
need_version="CentOS Linux release 7.5.1804"
need_version1="CentOS Linux release 7.4"
need_version2="CentOS Linux release 7.5"
need_version3="CentOS Linux release 7.6"
need_version4="CentOS Linux release 7.7"
need_version5="CentOS Linux release 7.8"
need_version6="CentOS Linux release 7.9"
fact_version=`cat /etc/redhat-release |awk '{print $1,$2,$3,$4}'`
fact_version1=`cat /etc/redhat-release |awk -F"." '{print $1"."$2}'`
if [ "$fact_version" == "$need_version" ];then
echo -e "$green_col 操作系统版本完全符合$need_version $reset_col"
elif [ "$fact_version1" == "$need_version1" -o "$fact_version1" == "$need_version2" -o "$fact_version1" == "$need_version3" -o "$fact_version1" == "$need_version4" -o "$fact_version1" == "$need_version5" -o "$fact_version1" == "$need_version6" ];then
echo -e "$green_col 操作系统版本是$fact_version1,符合大版本的要求！$reset_col"
else
echo -e "$red_col 操作系统版本是$fact_version，不符合$need_version要求！$reset_col"
fi
}
main() {
use_root
set_hostname
set_ssh
set_sysctl
set_dynmotd
check_volume
check_selinux
check_timezone
check_mtu
check_LANG
set_fonts
check_ipnet
check_network
check_firewalld
check_swap
check_cpu
check_mem
check_passwd
check_umask
check_python
check_openssl
check_http
check_datadisk
check_root
check_kernel
}
main
[root@YonXin-SIT-Master01 ~]# sh ~/init-centos7.sh
3.3 时间同步
这里以YonXin-SIT-Master01为例：
[root@YonXin-SIT-Master01 ~]# yum install chrony -y
[root@YonXin-SIT-Master01 ~]# vim /etc/chrony.conf
server ntp1.aliyun.com iburst
server ntp2.aliyun.com iburst
driftfile /var/lib/chrony/drift
makestep 1.0 3
rtcsync
allow 10.0.0.0/24
local stratum 10
logdir /var/log/chrony
[root@YonXin-SIT-Master01 ~]# systemctl enable chronyd && systemctl restart chronyd
[root@YonXin-SIT-Master01 ~]# systemctl list-unit-files | grep chronyd
[root@YonXin-SIT-Master01 ~]# timedatectl set-timezone Asia/Shanghai //修改为中国时区
[root@YonXin-SIT-Master01 ~]# chronyc sources -v //查看时间同步源
[root@YonXin-SIT-Master01 ~]# chronyc sourcestats -v //查看时间同步源状态
[root@YonXin-SIT-Master01 ~]# vim /var/log/messages
4. 安装DNS服务
PS：使用nginx作为前端代理ingress时需要DNS来解析容器内网的域名服务！
(1) 规划在YonXin-SIT-Master01上安装DNS服务：
[root@YonXin-SIT-Master01 ~]# yum install bind bind-utils -y
[root@YonXin-SIT-Master01 ~]# vim /etc/named.conf //修改主配置文件如下
acl slaves { 10.0.0.1; };
options {
listen-on port 53 { 10.0.0.1; 127.0.0.1; };
listen-on-v6 port 53 { any; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
allow-query { any; };
allow-transfer { slaves; };
forward only;
forwarders { 114.114.114.114; 8.8.8.8; };
recursion yes;
dnssec-enable no;
dnssec-validation no;
/* Path to ISC DLV key */
bindkeys-file "/etc/named.iscdlv.key";
managed-keys-directory "/var/named/dynamic";
pid-file "/run/named/named.pid";
session-keyfile "/run/named/session.key";
};
logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};
zone "." IN {
type hint;
file "named.ca";
};
include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";
[root@YonXin-SIT-Master01 ~]# named-checkconf /etc/named.conf //检查配置文件是否有语法错误
[root@YonXin-SIT-Master01 ~]# systemctl enable named && systemctl restart named //启动DNS服务
(2) 在/etc/named.rfc1912.zones配置文件中添加如下配置（用于定义根区域和自定义区域）：
[root@YonXin-SIT-Master01 ~]# vim /etc/named.rfc1912.zones
zone "hostname.com" IN {
type master;
file "hostname.com.zone";
allow-update { any; };
};
zone "k8s-images.com" IN {
type master;
file "k8s-images.com.zone";
allow-update { any; };
};
zone "k8s-ingress.com" IN {
type master;
file "k8s-ingress.com.zone";
allow-update { any; };
};
zone "yonxin100.com" IN {
type master;
file "yonxin100.com.zone";
allow-update { any; };
};
(3) 在/var/named/目录添加如下文件：
[root@YonXin-SIT-Master01 ~]# vim /var/named/hostname.com.zone
$ORIGIN hostname.com.
$TTL 600 ;
@ IN SOA dns.hostname.com. dnsadmin.hostname.com. (
2022031201 ; serial
10800 ; refresh
900 ; retry
604800 ; expire
86400 ) ; minimum
NS dns.hostname.com.
$TTL 60 ;
dns A 10.0.0.1
YonXin-SIT-Master01 A 10.0.0.1
YonXin-SIT-Master02 A 10.0.0.2
YonXin-SIT-Node01 A 10.0.0.3
YonXin-SIT-Node02 A 10.0.0.4
[root@YonXin-SIT-Master01 ~]# vim /var/named/k8s-images.com.zone
$ORIGIN k8s-images.com.
$TTL 600 ;
@ IN SOA dns.k8s-images.com. dnsadmin.k8s-images.com. (
2022031201 ; serial
10800 ; refresh
900 ; retry
604800 ; expire
86400 ) ; minimum
NS dns.k8s-images.com.
$TTL 60 ;
dns A 10.0.0.1
harbor A 10.0.0.3
[root@YonXin-SIT-Master01 ~]# vim /var/named/k8s-ingress.com.zone
$ORIGIN k8s-ingress.com.
$TTL 600 ;
@ IN SOA dns.k8s-ingress.com. dnsadmin.k8s-ingress.com. (
2022031201 ; serial
10800 ; refresh
900 ; retry
604800 ; expire
86400 ) ; minimum
NS dns.k8s-ingress.com.
$TTL 60 ;
dns A 10.0.0.1
* A 10.0.0.1
* A 10.0.0.2
[root@YonXin-SIT-Master01 ~]# vim /var/named/yonxin100.com.zone
$ORIGIN yonxin100.com.
$TTL 600 ;
@ IN SOA dns.yonxin100.com. dnsadmin.yonxin100.com. (
2022031201 ; serial
10800 ; refresh
900 ; retry
604800 ; expire
86400 ) ; minimum
NS dns.yonxin100.com.
$TTL 60 ;
dns A 10.0.0.1
www A 10.0.0.4
[root@YonXin-SIT-Master01 ~]# chmod -R 755 /var/named //给新建文件加可读权限
[root@YonXin-SIT-Master01 ~]# rndc reload //重新加载配置
(4) 所有服务器配置域名解析：
[root@master ~]# vim /etc/resolv.conf
# Generated by NetworkManager
search hostname.com
nameserver 10.0.0.1
5. 安装nginx作为所有业务入口
Nginx百度网盘下载链接：https://pan.baidu.com/s/1hZ8vMb8eFRQzb9VT1G7iYA 提取码：pjiu
[root@YonXin-SIT-Node02 ~]# tar zxf Yonxin-nginx-1.20.2-common-data.tar.gz
[root@YonXin-SIT-Node02 ~]# cd Yonxin-nginx-1.20.2-common-data && ./install_nginx.sh
[root@YonXin-SIT-Node02 ~]# cat /data/middleware/nginx/conf/nginx.conf #优化的配置
user root;
worker_processes auto;
worker_rlimit_nofile 65535;
pid /run/nginx.pid;
events {
use epoll;
worker_connections 20480;
multi_accept on;
accept_mutex on;
}
http {
include mime.types;
default_type application/octet-stream;
#配置日志打印格式;
log_format main '$remote_addr|$remote_user|[$time_local]|"$request"|'
'$status|$body_bytes_sent|$http_host|"$http_referer"|'
'"$http_user_agent"|$http_x_forwarded_for|$upstream_cache_status|'
'"$upstream_http_content_type"|$request_time|$upstream_response_time|$bytes_sent|$request_length|'
'"$upstream_addr"|$uuid|$span_id';
map $time_iso8601 $logdate {
'~^(?<ymd>\d{4}-\d{2}-\d{2})' $ymd;
default 'date-not-found';
}
access_log logs/access_$logdate.log main;
error_log logs/error.log notice;
open_log_file_cache max=10;
#使用内核的FD文件传输功能，可以减少user mode和kernel mode的切换，从而提升服务器性能;
sendfile on;
#当应用程序产生数据时，内核不会立马封装包，而是当数据量积累到一定量时才会封装，然后传输,防止网络阻塞;
tcp_nopush on;
charset utf-8;
#避免多增加一些域名转向到相同的upstream里面，影响nginx正常hash存储;
server_names_hash_bucket_size 128;
#请求头大小
client_header_buffer_size 32k;
#(请求行+请求头)的大小不能超过32K(4 * 8k);
large_client_header_buffers 4 32k;
#表示客户端请求服务器传输最大允许文件大小4G
client_max_body_size 4096m;
#分配给请求数据的Buffer大小
client_body_buffer_size 512k;
#HTTP长连接超时时间(秒)，keepalive_timeout 0 表示关闭长连接;
keepalive_timeout 65;
#隐藏nginx版本信息
server_tokens off;
#当客户端请求头中带有下划线的字段将会被识别为有效字段;
underscores_in_headers on;
#设置头部哈希表的最大值，不能小于后端服务器设置的头部总数;
proxy_headers_hash_max_size 51200;
#设置头部哈希表大小;
proxy_headers_hash_bucket_size 6400;
#后端服务器连接的超时时间_发起握手等候响应超时时间(秒);
proxy_connect_timeout 5;
#后端服务器处理请求的时间
proxy_read_timeout 7200;
proxy_send_timeout 5000;
proxy_buffer_size 16k;
proxy_buffers 4 64k;
proxy_busy_buffers_size 128k;
proxy_temp_file_write_size 128k;
proxy_temp_path /data/middleware/nginx/proxy_temp;
proxy_cache_path /data/middleware/nginx/proxy_cache levels=1:2 keys_zone=content:20m inactive=1d max_size=100m;
proxy_cache_path /data/middleware/nginx/proxy_cache_image levels=1:2 keys_zone=content_image:20m inactive=1d max_size=100m;
proxy_cache_bypass $http_secret_header;
proxy_ignore_client_abort on;
#监控Nginx虚拟主机流量以及状态
vhost_traffic_status_zone;
vhost_traffic_status_filter_by_host on;
#开启文件请求时进行gzip压缩传输;
gzip on;
gzip_min_length 1k;
gzip_buffers 4 16k;
gzip_http_version 1.0;
#压缩等级;
gzip_comp_level 2;
gzip_types text/plain application/x-javascript application/javascript text/css;
#选项可让前端的缓存服务器缓存经过的gzip压缩的页面;
gzip_vary on;
# 指定lua模块路径，多个之间";"分隔，其中";;"表示默认搜索路径，默认到nginx的根目录下找
lua_package_path "/data/middleware/nginx/lualib/?.lua;/data/middleware/nginx/lualib/lib/lua/?.lua;;";
init_by_lua '
require "resty.core"
uuid4 = require "uuid4"
';
#配置include管理多个配置文件;
include /data/middleware/nginx/conf.d/*.conf;
}
[root@YonXin-SIT-Node02 ~]# cat /data/middleware/nginx/conf.d/upstream-server.conf #配置ingress的代理
upstream ingress {
server 10.0.0.1 max_fails=2 fail_timeout=3s weight=1;
server 10.0.0.2 max_fails=2 fail_timeout=3s weight=1;
check interval=3000 rise=2 fall=5 timeout=1000 type=tcp;
}
#upstream backend {
# ip_hash;
# server 10.32.140.177:80;
# check fall=3 interval=1000 rise=2 timeout=2000 type=http default_down=true;
# check_http_send "GET /nccloud/healthcheck HTTP/1.1\r\nHOST:xxxx.com\r\n\r\n";
# check_http_expect_alive http_2xx http_3xx;
#}
server {
listen 80 default;
proxy_http_version 1.1;
if ($time_iso8601 ~ "^(\d{4})-(\d{2})-(\d{2})"){
set $log_year $1;
set $log_month $2;
set $log_day $3;
}
set_by_lua $uuid '
if ngx.var.http_X_traceId == nil then
return string.sub(ngx.var.request_id,17,-1)
else
return ngx.var.http_X_traceId
end
';
set_by_lua $span_id '
if ngx.var.http_X_spanId == nil then
return ngx.var.uuid
else
return ngx.var.http_X_spanId
end
';
access_log logs/location_access_$log_year-$log_month-$log_day.log main;
error_log logs/location_error.log notice;
error_page 404 /404.html;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
server_name www.yonxin100.com;
listen 443 ssl;
ssl_certificate "cert/server.crt";
ssl_certificate_key "cert/server.key";
location /status {
#allow IP;
#deny all;
check_status;
access_log off;
#vhost_traffic_status_display;
#vhost_traffic_status_display_format html;
}
location / {
root html;
index index.html index.htm;
}
location /nginx/ {
proxy_pass http://ingress/;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header REMOTE-HOST $remote_addr;
proxy_set_header X-Forwarded-Host $http_host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host "test-nginx.k8s-ingress.com"; #对应ingress配置
}
location /tomcat/ {
proxy_pass http://ingress/;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header REMOTE-HOST $remote_addr;
proxy_set_header X-Forwarded-Host $http_host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host "test-tomcat.k8s-ingress.com"; #对应ingress配置
}
}
6. 安装docker和containerd
PS：所有服务都需要安装，Docker无法正常启动一般是selinux未设置disabled，docker IP跟主机IP冲突或者linux内核版本过低！
(1) 使用yum安装准备：
[root@server ~]# yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo //下载安装仓库配置
[root@server ~]# yum clean all && yum makecache
(2) 加载ipvs内核模块：
[root@server ~]# yum install ipvsadm ipset sysstat conntrack libseccomp -y //启用ipvs内核模块
[root@server ~]# echo 'options ip_vs conn_tab_bits=20' > /etc/modprobe.d/ip_vs.conf //调整ipvs哈希表大小
[root@server ~]# ipvsadm --set 10 10 10 && echo "ipvsadm --set 10 10 10" >> /etc/rc.d/rc.local //设置开机启动
cat > /etc/modules-load.d/ipvs.conf <<EOF
ip_vs
ip_vs_lc
ip_vs_wlc
ip_vs_rr
ip_vs_wrr
ip_vs_lblc
ip_vs_lblcr
ip_vs_dh
ip_vs_sh
ip_vs_fo
ip_vs_nq
ip_vs_sed
ip_vs_ftp
ip_vs_sh
nf_conntrack
ip_tables
ip_set
xt_set
ipt_set
ipt_rpfilter
ipt_REJECT
ipip
EOF
cat > /etc/modules-load.d/containerd.conf <<EOF
overlay
br_netfilter
EOF
cat <<EOF | sudo tee /etc/sysctl.d/99-kubernetes-cri.conf
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
EOF
[root@server ~]# service systemd-modules-load restart && systemctl enable --now systemd-modules-load
[root@server ~]# sysctl --system && lsmod | grep -e ip_vs -e nf_conntrack -e overlay //查询模块是否加载
[root@server ~]# ipvsadm -Ln //查看LVS转发列表
(3) 安装服务
[root@server ~]# yum -y install docker-ce-20.10.9 docker-ce-cli-20.10.9 docker-compose containerd.io-1.6.6
[root@server ~]# mkdir -p /data/docker && mkdir -p /etc/docker && chmod 755 -R /etc/docker
[root@server ~]# vim /etc/docker/daemon.json //修改 Docker Cgroup Driver 为 systemd
{
"graph": "/data/docker",
"insecure-registries": ["0.0.0.0/0","harbor.k8s-images.com","harbor.k8s-images.com:81"],
"registry-mirrors": ["https://cjw7u3gx.mirror.aliyuncs.com","https://docker.mirrors.ustc.edu.cn"],
"exec-opts": ["native.cgroupdriver=systemd"],
"log-driver": "json-file",
"log-opts": {"max-size":"200m", "max-file":"5","labels": "somelabel","env": "os,customer"},
"storage-driver": "overlay2",
"bip": "172.17.0.1/16"
}
[root@server ~]# mkdir -p /etc/containerd && containerd config default | tee /etc/containerd/config.toml
[root@server ~]# vim /etc/containerd/config.toml
#1 systemd_cgroup = false 改为 systemd_cgroup = true
#2 sandbox_image = "k8s.gcr.io/pause:3.6" 改为：
sandbox_image = "registry.aliyuncs.com/google_containers/pause:3.6"
#3 [plugins."io.containerd.grpc.v1.cri".containerd.default_runtime] 改为：
runtime_root = ""
runtime_type = "io.containerd.runtime.v1.linux"
[root@server ~]# systemctl daemon-reload && systemctl enable docker && systemctl restart docker //开机启动
[root@server ~]# systemctl enable containerd && systemctl status containerd && systemctl status docker
[root@server ~]# ctr version && runc -version
[root@server ~]# docker info //查看Docker环境(重点)
7. 安装Harbor服务
Harbor安装包百度网盘下载链接：https://pan.baidu.com/s/1pJaZoXzDq3qRDiW72mkAHg 提取码：prju
[root@YonXin-SIT-Node02 ~]# tar zxf Yonxin-harbor-v2.1.0-data.tar.gz
[root@YonXin-SIT-Node02 ~]# cd Yonxin-harbor-v2.1.0-data && ./install_harbor
8. 安装ETCD服务
8.1 安装cfssl工具
cfssl版本：1.6.1
(1) cfssl/cfssl-json/cfssl-certinfo下载地址：
https://github.com/cloudflare/cfssl/releases
- cfssl: 用于签发证书，输出json格式文本；
- cfssl-json: 将cfssl签发生成的证书(json格式)变成文件承载式文件；
- cfssl-certinfo: 验证查看证书信息。
(2) cfssl工具的子命令包括：
- genkey: 生成一个key(私钥)和CSR(证书签名请求)
- certinfo: 输出给定证书的证书信息
- gencert: 生成新的key(密钥)和签名证书，该命令的参数如下：
- -initca：初始化一个新ca，生成根CA时需要。
- -ca：指明ca的证书（ca.pem）
- -ca-key：指明ca的私钥文件（ca-key.pem）
- -config：指明证书请求csr的json文件（ca-config.json）
- -profile：与-config中的profile对应，是指根据config中的profile段来生成证书的相关信息
8.2 生成etcd证书
(1) 创建生成CA证书签名请求（CSR）的JSON配置文件，文件路径及内容：
[root@YonXin-SIT-Master01 ~]# cat > /data/etcd/cert/ca-csr.json << EOF
{
"CA":{"expiry":"876000h"},
"CN": "kubernetes",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "Beijing",
"ST": "Beijing",
"O": "k8s",
"OU": "System"
}
]
}
EOF
(2) 创建CA根证书策略文件
[root@YonXin-SIT-Master01 ~]# cat > /data/etcd/cert/ca-config.json << EOF
{
"signing": {
"default": {
"expiry": "876000h"
},
"profiles": {
"server": {
"expiry": "876000h",
"usages": [
"signing",
"key encipherment",
"server auth"
]
},
"client": {
"expiry":"876000h",
"usages": [
"signing",
"key enchiperment",
"client auth"
]
},
"kubernetes": {
"expiry":"876000h",
"usages": [
"signing",
"key enchiperment",
"server auth",
"client auth"
]
},
"peer": {
"expiry": "876000h",
"usages": [
"signing",
"key enchiperment",
"server auth",
"client auth"
]
}
}
}
}
EOF
(3) 创建etcd证书，客户端访问与节点互相访问使用同一套证书
[root@YonXin-SIT-Master01 ~]# cat > /data/etcd/cert/etcd-csr.json << EOF
{
"CN": "k8s-etcd",
"hosts": [
"10.0.0.1",
"10.0.0.2",
"10.0.0.3",
"127.0.0.1"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "beijing",
"L": "beijing",
"O": "k8s",
"OU": "system"
}
]
}
EOF
(4) 生成etcd证书和私钥
[root@YonXin-SIT-Master01 ~]# cd /data/etcd/cert/ && cfssl gencert -initca ca-csr.json | cfssljson -bare ca -
[root@YonXin-SIT-Master01 ~]# cfssl gencert -ca="ca.pem" -ca-key="ca-key.pem" -config="ca-config.json" -profile="kubernetes" etcd-csr.json | cfssljson -bare etcd
(5) 查询证书有效期
[root@YonXin-SIT-Master01 ~]# openssl x509 -noout -text -in /data/etcd/cert/ca.pem | grep Not //查询ca证书有效期
[root@YonXin-SIT-Master01 ~]# openssl x509 -noout -text -in /data/etcd/cert/etcd.pem | grep Not //查询etcd证书有效期
8.3 安装etcd集群
(1) etcd版本：v3.5.4 ，安装包下载地址：
https://github.com/etcd-io/etcd/releases/tag/v3.5.4
(2) 二进制安装第一台etcd
[root@YonXin-SIT-Master01 ~]# tar -zxf etcd-v3.5.4-linux-amd64.tar.gz -C /data/
[root@YonXin-SIT-Master01 ~]# mv /data/etcd-v3.5.4-linux-amd64 /data/etcd
[root@YonXin-SIT-Master01 ~]# mkdir -p /data/etcd/{cert,config,data,logs,service}
[root@YonXin-SIT-Master01 ~]# cp /data/etcd/etcdctl /usr/bin/
[root@YonXin-SIT-Master01 ~]# vim /data/etcd/config/etcd.conf
#[Member]
ETCD_NAME="etcd01"
ETCD_DATA_DIR="/data/etcd/data"
ETCD_LISTEN_PEER_URLS="https://10.0.0.1:2380"
ETCD_LISTEN_CLIENT_URLS="https://10.0.0.1:2379,http://127.0.0.1:2379"
ETCD_QUOTA_BACKEND_BYTES="8000000000"
#[Clustering]
#ETCD_INITIAL_CLUSTER_STATE="new"
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://10.0.0.1:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://10.0.0.1:2379"
ETCD_INITIAL_CLUSTER="etcd01=https://10.0.0.1:2380,etcd02=https://10.0.0.2:2380,etcd03=https://10.0.0.3:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_LOG_OUTPUT="stdout"
[root@YonXin-SIT-Master01 ~]# vim /data/etcd/service/etcd.service
[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target
[Service]
Type=notify
User=root
WorkingDirectory=/data/etcd/
EnvironmentFile=/data/etcd/config/etcd.conf
ExecStart=/data/etcd/etcd \
--cert-file=/data/etcd/cert/etcd.pem \
--key-file=/data/etcd/cert/etcd-key.pem \
--trusted-ca-file=/data/etcd/cert/ca.pem \
--peer-cert-file=/data/etcd/cert/etcd.pem \
--peer-key-file=/data/etcd/cert/etcd-key.pem \
--peer-trusted-ca-file=/data/etcd/cert/ca.pem \
--initial-cluster-state=new \
--peer-client-cert-auth \
--client-cert-auth
Restart=on-failure
RestartSec=5
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
[root@YonXin-SIT-Master01 ~]# cp /data/etcd/service/etcd.service /usr/lib/systemd/system/
[root@YonXin-SIT-Master01 ~]# systemctl daemon-reload && systemctl enable etcd && systemctl restart etcd
[root@YonXin-SIT-Master01 ~]# echo "#ETCDCTL Env" >> /etc/profile && echo "export ETCDCTL_API=3" >> /etc/profile
(3) 二进制安装其他etcd
复制第一台etcd的目录/data/etcd 到其他2台服务器的/data 目录下，修改/data/etcd/config/etcd.conf配置文件的IP地址和etcd名称，删除/data/etcd/data/目录下的文件，然后执行：
[root@YonXin-SIT-Master02 ~]# cp /data/etcd/service/etcd.service /usr/lib/systemd/system/
[root@YonXin-SIT-Master02 ~]# systemctl daemon-reload && systemctl enable etcd && systemctl restart etcd
[root@YonXin-SIT-Master02 ~]# echo "#ETCDCTL Env" >> /etc/profile && echo "export ETCDCTL_API=3" >> /etc/profile
(4) 检查etcd集群状态
[root@YonXin-SIT-Master01 ~]# etcdctl --endpoints="https://10.0.0.1:2379,https://10.0.0.2:2379,https://10.0.0.3:2379" --cacert=/data/etcd/cert/ca.pem --cert=/data/etcd/cert/etcd.pem --key=/data/etcd/cert/etcd-key.pem --write-out=table member list #查看集群成员
[root@YonXin-SIT-Master01 ~]# etcdctl --endpoints="https://10.0.0.1:2379,https://10.0.0.2:2379,https://10.0.0.3:2379" --cacert=/data/etcd/cert/ca.pem --cert=/data/etcd/cert/etcd.pem --key=/data/etcd/cert/etcd-key.pem --write-out=table endpoint status #查看集群状态
9. 安装第一台k8s-master服务
9.1 配置4层反向代理
[root@YonXin-SIT-Master01 ~]# yum install -y keepalived haproxy //拉取并配置Keepalived和haproxy
[root@YonXin-SIT-Master01 ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
router_id K8S-HAPROXY
script_user root
enable_script_security
}
vrrp_script check_haproxy {
script "/etc/keepalived/check_haproxy.sh"
interval 2
weight -40
}
vrrp_instance VI_HAPROXY {
state BACKUP
interface bond0
virtual_router_id 218
priority 120
advert_int 2
authentication {
auth_type PASS
auth_pass 2121
}
virtual_ipaddress {
10.0.0.8
}
track_script {
check_haproxy
}
}
[root@YonXin-SIT-Master01 ~]# journalctl -f -u keepalived //查看实时日志打印
[root@YonXin-SIT-Master01 ~]# vim /etc/keepalived/check_haproxy.sh
#!/bin/bash
flag=`systemctl status haproxy |grep -cE "running"`
if [ ${flag} -eq 1 ];then
exit 0
else
exit 1
fi
[root@YonXin-SIT-Master01 ~]# chmod 755 /etc/keepalived/check_haproxy.sh //可执行权限
[root@YonXin-SIT-Master01 ~]# vim /etc/haproxy/haproxy.cfg
global
log 127.0.0.1 local2 info
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4096
nbproc 8
daemon
stats bind-process 1
stats socket /var/lib/haproxy/stats
defaults
mode http
log global
option dontlognull
option http-server-close
option redispatch
option forwardfor
retries 3
timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
timeout http-keep-alive 10s
timeout check 10s
option forceclose
maxconn 3000
frontend main *:5443
mode tcp
option tcplog
default_backend k8s_apiserver
backend k8s_apiserver
mode tcp
option tcplog
balance roundrobin # 默认的负载均衡的方式,轮询方式
server k8s-master01 10.0.0.1:6443 check inter 2000 fall 2 rise 2 weight 1
server k8s-master02 10.0.0.2:6443 check inter 2000 fall 2 rise 2 weight 1
[root@YonXin-SIT-Master01 ~]# systemctl enable haproxy && systemctl restart haproxy && systemctl status haproxy
[root@YonXin-SIT-Master01 ~]# systemctl enable keepalived && systemctl restart keepalived
9.2 签发所有证书
安装包下载地址：https://github.com/kubernetes/kubernetes/tree/master/CHANGELOG
(1) 下载二进制包并解压
[root@YonXin-SIT-Master01 ~]# tar -zxf kubernetes-server-linux-amd64.tar.gz -C /data/
[root@YonXin-SIT-Master01 ~]# mv /data/kubernetes/server/bin /data/kubernetes/
[root@YonXin-SIT-Master01 ~]# rm -rf /data/kubernetes/{kubernetes-src.tar.gz,LICENSES,addons,server,bin/{*.tar,*_tag}}
[root@YonXin-SIT-Master01 ~]# mkdir -p /data/kubernetes/{cfssl,pki,config,data,logs,service,yaml}
[root@YonXin-SIT-Master01 ~]# cp /data/kubernetes/bin/kubectl /usr/bin/
(2) 创建生成CA证书签名请求（CSR）的JSON配置文件，文件路径及内容：
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/pki/ca-csr.json << EOF
{
"CA":{"expiry":"876000h"},
"CN": "kubernetes",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "Beijing",
"ST": "Beijing",
"O": "k8s",
"OU": "System"
}
]
}
EOF
(2) 创建CA根证书策略文件
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/pki/ca-config.json << EOF
{
"signing": {
"default": {
"expiry": "876000h"
},
"profiles": {
"server": {
"expiry": "876000h",
"usages": [
"signing",
"key encipherment",
"server auth"
]
},
"client": {
"expiry":"876000h",
"usages": [
"signing",
"key enchiperment",
"client auth"
]
},
"kubernetes": {
"expiry":"876000h",
"usages": [
"signing",
"key enchiperment",
"server auth",
"client auth"
]
},
"peer": {
"expiry": "876000h",
"usages": [
"signing",
"key enchiperment",
"server auth",
"client auth"
]
}
}
}
}
EOF
(3) 创建kube-apiserver的json文件
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/pki/kube-apiserver-csr.json << EOF
{
"CN": "kubernetes",
"hosts": [
"10.0.0.1",
"10.0.0.2",
"10.0.0.3",
"10.0.0.8",
"10.96.0.1",
"127.0.0.1",
"kubernetes",
"kubernetes.default",
"kubernetes.default.svc",
"kubernetes.default.svc.cluster",
"kubernetes.default.svc.cluster.local"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "k8s",
"OU": "System"
}
]
}
EOF
(4) 创建kube-controller-manager的json文件
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/pki/kube-controller-manager-csr.json << EOF
{
"CN": "system:kube-controller-manager",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "system:masters",
"OU": "System"
}
]
}
EOF
(5) 创建kube-scheduler的json文件
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/pki/kube-scheduler-csr.json << EOF
{
"CN": "system:kube-scheduler",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "system:masters",
"OU": "System"
}
]
}
EOF
(6) 创建kubectl的json文件
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/pki/kubectl-csr.json <<EOF
{
"CN": "admin",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "system:masters",
"OU": "System"
}
]
}
EOF
(7) 创建kube-proxy的json文件
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/pki/kube-proxy-csr.json << EOF
{
"CN": "system:kube-proxy",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "k8s",
"OU": "System"
}
]
}
EOF
(8) 创建所有证书文件
[root@YonXin-SIT-Master01 ~]# cd /data/kubernetes/pki && cfssl gencert -initca ca-csr.json | cfssljson -bare ca -
[root@YonXin-SIT-Master01 ~]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-apiserver-csr.json | cfssljson -bare kube-apiserver
[root@YonXin-SIT-Master01 ~]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-controller-manager-csr.json | cfssljson -bare kube-controller-manager
[root@YonXin-SIT-Master01 ~]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-scheduler-csr.json | cfssljson -bare kube-scheduler
[root@YonXin-SIT-Master01 ~]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kubectl-csr.json | cfssljson -bare kubectl
[root@YonXin-SIT-Master01 ~]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-proxy-csr.json | cfssljson -bare kube-proxy
(9) 查询证书文件有效期
[root@YonXin-SIT-Master01 ~]# openssl x509 -noout -text -in /data/kubernetes/pki/ca.pem | grep Not //查询ca证书有效期
[root@YonXin-SIT-Master01 ~]# openssl x509 -noout -text -in /data/kubernetes/pki/kube-apiserver.pem | grep Not
9.3 生成token.csv文件
[root@YonXin-SIT-Master01 ~]# head -c 16 /dev/urandom | od -An -t x | tr -d ' '
e6c807c0033ea7cfcda16abad126751c
[root@YonXin-SIT-Master01 ~]# echo 'e6c807c0033ea7cfcda16abad126751c,kubelet-bootstrap,10001,"system:node-bootstrapper"' > /data/kubernetes/config/token.csv
9.4 创建kube-apiserver启动配置和脚本
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/config/kube-apiserver.conf << EOF
KUBE_APISERVER_OPTS="--logtostderr=false \\
--v=2 \\
--etcd-servers=https://10.0.0.1:2379,https://10.0.0.2:2379,https://10.0.0.3:2379 \\
--bind-address=10.0.0.1 \\
--secure-port=6443 \\
--advertise-address=10.0.0.1 \\
--allow-privileged=true \\
--service-cluster-ip-range=10.96.0.0/16 \\
--enable-admission-plugins=NodeRestriction \\
--authorization-mode=RBAC,Node \\
--enable-bootstrap-token-auth=true \\
--token-auth-file=/data/kubernetes/config/token.csv \\
--service-node-port-range=30000-60000 \\
--kubelet-client-certificate=/data/kubernetes/pki/kube-apiserver.pem \\
--kubelet-client-key=/data/kubernetes/pki/kube-apiserver-key.pem \\
--tls-cert-file=/data/kubernetes/pki/kube-apiserver.pem \\
--tls-private-key-file=/data/kubernetes/pki/kube-apiserver-key.pem \\
--client-ca-file=/data/kubernetes/pki/ca.pem \\
--service-account-key-file=/data/kubernetes/pki/ca-key.pem \\
--service-account-issuer=https://kubernetes.default.svc.cluster.local \\
--service-account-signing-key-file=/data/kubernetes/pki/ca-key.pem \\
--etcd-cafile=/data/etcd/cert/ca.pem \\
--etcd-certfile=/data/etcd/cert/etcd.pem \\
--etcd-keyfile=/data/etcd/cert/etcd-key.pem \\
--requestheader-client-ca-file=/data/kubernetes/pki/ca.pem \\
--proxy-client-cert-file=/data/kubernetes/pki/kube-apiserver.pem \\
--proxy-client-key-file=/data/kubernetes/pki/kube-apiserver-key.pem \\
--requestheader-allowed-names=kubernetes \\
--requestheader-extra-headers-prefix=X-Remote-Extra- \\
--requestheader-group-headers=X-Remote-Group \\
--requestheader-username-headers=X-Remote-User \\
--enable-aggregator-routing=true \\
--audit-log-maxage=30 \\
--audit-log-maxbackup=3 \\
--audit-log-maxsize=100 \\
--audit-log-path=/data/kubernetes/logs/audit.log"
EOF
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/service/kube-apiserver.service << EOF
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
[Service]
EnvironmentFile=/data/kubernetes/config/kube-apiserver.conf
ExecStart=/data/kubernetes/bin/kube-apiserver \$KUBE_APISERVER_OPTS
Restart=on-failure
[Install]
WantedBy=multi-user.target
EOF
[root@YonXin-SIT-Master01 ~]# cp /data/kubernetes/service/kube-apiserver.service /usr/lib/systemd/system/
[root@YonXin-SIT-Master01 ~]# systemctl enable kube-apiserver && systemctl restart kube-apiserver
9.5 创建kube-controller-manager启动配置和脚本
[root@YonXin-SIT-Master01 ~]# KUBE_CONFIG="/data/kubernetes/config/kube-controller-manager.kubeconfig"
KUBE_APISERVER="https://10.0.0.8:5443"
kubectl config set-cluster kubernetes \
--certificate-authority=/data/kubernetes/pki/ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-credentials kube-controller-manager \
--client-certificate=/data/kubernetes/pki/kube-controller-manager.pem \
--client-key=/data/kubernetes/pki/kube-controller-manager-key.pem \
--embed-certs=true \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-context default \
--cluster=kubernetes \
--user=kube-controller-manager \
--kubeconfig=${KUBE_CONFIG}
kubectl config use-context default --kubeconfig=${KUBE_CONFIG}
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/config/kube-controller-manager.conf << EOF
KUBE_CONTROLLER_MANAGER_OPTS="--logtostderr=false \\
--v=2 \\
--leader-elect=true \\
--kubeconfig=/data/kubernetes/config/kube-controller-manager.kubeconfig \\
--bind-address=127.0.0.1 \\
--allocate-node-cidrs=true \\
--cluster-cidr=10.244.0.0/16 \\
--service-cluster-ip-range=10.96.0.0/16 \\
--cluster-signing-cert-file=/data/kubernetes/pki/ca.pem \\
--cluster-signing-key-file=/data/kubernetes/pki/ca-key.pem \\
--root-ca-file=/data/kubernetes/pki/ca.pem \\
--service-account-private-key-file=/data/kubernetes/pki/ca-key.pem \\
--cluster-signing-duration=876000h0m0s"
EOF
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/service/kube-controller-manager.service << EOF
[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes
[Service]
EnvironmentFile=/data/kubernetes/config/kube-controller-manager.conf
ExecStart=/data/kubernetes/bin/kube-controller-manager \$KUBE_CONTROLLER_MANAGER_OPTS
Restart=on-failure
[Install]
WantedBy=multi-user.target
EOF
[root@YonXin-SIT-Master01 ~]# cp /data/kubernetes/service/kube-controller-manager.service /usr/lib/systemd/system/
[root@YonXin-SIT-Master01 ~]# systemctl enable kube-controller-manager && systemctl restart kube-controller-manager
9.6 创建kube-scheduler启动配置和脚本
[root@YonXin-SIT-Master01 ~]# KUBE_CONFIG="/data/kubernetes/config/kube-scheduler.kubeconfig"
KUBE_APISERVER="https://10.0.0.8:5443"
kubectl config set-cluster kubernetes \
--certificate-authority=/data/kubernetes/pki/ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-credentials kube-scheduler \
--client-certificate=/data/kubernetes/pki/kube-scheduler.pem \
--client-key=/data/kubernetes/pki/kube-scheduler-key.pem \
--embed-certs=true \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-context default \
--cluster=kubernetes \
--user=kube-scheduler \
--kubeconfig=${KUBE_CONFIG}
kubectl config use-context default --kubeconfig=${KUBE_CONFIG}
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/config/kube-scheduler.conf << EOF
KUBE_SCHEDULER_OPTS="--logtostderr=false \\
--v=2 \\
--leader-elect \\
--kubeconfig=/data/kubernetes/config/kube-scheduler.kubeconfig \\
--bind-address=127.0.0.1"
EOF
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/service/kube-scheduler.service << EOF
[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetes
[Service]
EnvironmentFile=/data/kubernetes/config/kube-scheduler.conf
ExecStart=/data/kubernetes/bin/kube-scheduler \$KUBE_SCHEDULER_OPTS
Restart=on-failure
[Install]
WantedBy=multi-user.target
EOF
[root@YonXin-SIT-Master01 ~]# cp /data/kubernetes/service/kube-scheduler.service /usr/lib/systemd/system/
[root@YonXin-SIT-Master01 ~]# systemctl enable kube-scheduler && systemctl restart kube-scheduler
9.7 创建kubectl连接配置文件
[root@YonXin-SIT-Master01 ~]# KUBE_CONFIG="/data/kubernetes/config/kubectl.kubeconfig"
KUBE_APISERVER="https://10.0.0.8:5443"
kubectl config set-cluster kubernetes \
--certificate-authority=/data/kubernetes/pki/ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-credentials cluster-admin \
--client-certificate=/data/kubernetes/pki/kubectl.pem \
--client-key=/data/kubernetes/pki/kubectl-key.pem \
--embed-certs=true \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-context default \
--cluster=kubernetes \
--user=cluster-admin \
--kubeconfig=${KUBE_CONFIG}
kubectl config use-context default --kubeconfig=${KUBE_CONFIG}
[root@YonXin-SIT-Master01 ~]# mkdir -p $HOME/.kube && sudo cp -i /data/kubernetes/config/kubectl.kubeconfig $HOME/.kube/config
[root@YonXin-SIT-Master01 ~]# sudo chown $(id -u):$(id -g) $HOME/.kube/config //生成kubectl(重要)
9.8 授权kubelet-bootstrap用户允许请求证书
[root@YonXin-SIT-Master01 ~]# kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap
9.9 创建kubelet启动配置和脚本
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/config/kubelet.conf << EOF
KUBELET_OPTS="--logtostderr=false \\
--v=2 \\
--hostname-override=YonXin-SIT-Master01 \\
--cluster-domain=cluster.local \\
--kubeconfig=/data/kubernetes/config/kubelet.kubeconfig \\
--bootstrap-kubeconfig=/data/kubernetes/config/kubelet-bootstrap.kubeconfig \\
--config=/data/kubernetes/config/kubelet-config.yml \\
--cert-dir=/data/kubernetes/pki \\
--container-runtime=remote \\
--runtime-request-timeout=3m \\
--container-runtime-endpoint=unix:///run/containerd/containerd.sock \\
--cgroup-driver=systemd \\
--feature-gates=IPv6DualStack=true"
EOF
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/config/kubelet-config.yml << EOF
kind: KubeletConfiguration
apiVersion: kubelet.config.k8s.io/v1beta1
address: 0.0.0.0
port: 10250
readOnlyPort: 10255
cgroupDriver: cgroupfs
clusterDNS:
- 10.96.0.10
clusterDomain: cluster.local
failSwapOn: false
authentication:
anonymous:
enabled: false
webhook:
cacheTTL: 2m0s
enabled: true
x509:
clientCAFile: /data/kubernetes/pki/ca.pem
authorization:
mode: Webhook
webhook:
cacheAuthorizedTTL: 5m0s
cacheUnauthorizedTTL: 30s
evictionHard:
imagefs.available: 15%
memory.available: 100Mi
nodefs.available: 10%
nodefs.inodesFree: 5%
maxOpenFiles: 1000000
maxPods: 500
EOF
[root@YonXin-SIT-Master01 ~]# KUBE_CONFIG="/data/kubernetes/config/kubelet-bootstrap.kubeconfig"
KUBE_APISERVER="https://10.0.0.8:5443" # apiserver IP:PORT
kubectl config set-cluster kubernetes \
--certificate-authority=/data/kubernetes/pki/ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-credentials "kubelet-bootstrap" \
--token=$(awk -F "," '{print $1}' /data/kubernetes/config/token.csv) \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-context default \
--cluster=kubernetes \
--user="kubelet-bootstrap" \
--kubeconfig=${KUBE_CONFIG}
kubectl config use-context default --kubeconfig=${KUBE_CONFIG}
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/service/kubelet.service << EOF
[Unit]
Description=Kubernetes Kubelet
After=docker.service
[Service]
EnvironmentFile=/data/kubernetes/config/kubelet.conf
ExecStart=/data/kubernetes/bin/kubelet \$KUBELET_OPTS
Restart=on-failure
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
EOF
[root@YonXin-SIT-Master01 ~]# cp /data/kubernetes/service/kubelet.service /usr/lib/systemd/system/
[root@YonXin-SIT-Master01 ~]# systemctl enable kubelet && systemctl restart kubelet && systemctl status kubelet
9.10 创建kube-proxy启动配置和脚本
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/config/kube-proxy.conf << EOF
KUBE_PROXY_OPTS="--logtostderr=false \\
--v=2 \\
--config=/data/kubernetes/config/kube-proxy-config.yml"
EOF
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/config/kube-proxy-config.yml << EOF
kind: KubeProxyConfiguration
apiVersion: kubeproxy.config.k8s.io/v1alpha1
bindAddress: 0.0.0.0
metricsBindAddress: 0.0.0.0:10249
clientConnection:
kubeconfig: /data/kubernetes/config/kube-proxy.kubeconfig
hostnameOverride: YonXin-SIT-Master01
clusterCIDR: 10.244.0.0/16
mode: ipvs
ipvs:
scheduler: "rr"
iptables:
masqueradeAll: true
EOF
[root@YonXin-SIT-Master01 ~]# KUBE_CONFIG="/data/kubernetes/config/kube-proxy.kubeconfig"
KUBE_APISERVER="https://10.0.0.8:5443"
kubectl config set-cluster kubernetes \
--certificate-authority=/data/kubernetes/pki/ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-credentials kube-proxy \
--client-certificate=/data/kubernetes/pki/kube-proxy.pem \
--client-key=/data/kubernetes/pki/kube-proxy-key.pem \
--embed-certs=true \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-context default \
--cluster=kubernetes \
--user=kube-proxy \
--kubeconfig=${KUBE_CONFIG}
kubectl config use-context default --kubeconfig=${KUBE_CONFIG}
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/service/kube-proxy.service << EOF
[Unit]
Description=Kubernetes Proxy
After=network.target
[Service]
EnvironmentFile=/data/kubernetes/config/kube-proxy.conf
ExecStart=/data/kubernetes/bin/kube-proxy \$KUBE_PROXY_OPTS
Restart=on-failure
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
EOF
[root@YonXin-SIT-Master01 ~]# cp /data/kubernetes/service/kube-proxy.service /usr/lib/systemd/system/
[root@YonXin-SIT-Master01 ~]# systemctl enable kube-proxy && systemctl restart kube-proxy
9.11 批准kubelete证书申请并加入集群
[root@YonXin-SIT-Master01 ~]# kubectl get csr //查看kubelet证书请求(重要)
[root@YonXin-SIT-Master01 ~]# kubectl certificate approve node-csr-XXXXXXXX //批准kubelet证书申请(重要)
[root@YonXin-SIT-Master01 ~]# kubectl get cs && kubectl get sa -A && kubectl get ns -A && kubectl get role -A //查看资源
[root@YonXin-SIT-Master01 ~]# kubectl label node [nodename] node-role.kubernetes.io/master= //给master打标签
[root@YonXin-SIT-Master01 ~]# kubectl label node [nodename] node-role.kubernetes.io/ingress= //给master打标签
9.12 配置kubectl命令补全功能
[root@YonXin-SIT-Master01 ~]# yum -y install bash-completion
chmod +x /usr/share/bash-completion/bash_completion
/usr/share/bash-completion/bash_completion
source /usr/share/bash-completion/bash_completion
source <(kubectl completion bash)
echo "source <(kubectl completion bash)" >> /etc/bashrc
9.13 授权apiserver访问kubelet
[root@YonXin-SIT-Master01 ~]# cat > /data/kubernetes/yaml/apiserver-to-kubelet-rbac.yaml << EOF
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
annotations:
rbac.authorization.kubernetes.io/autoupdate: "true"
labels:
kubernetes.io/bootstrapping: rbac-defaults
name: system:kube-apiserver-to-kubelet
rules:
- apiGroups:
- ""
resources:
- nodes/proxy
- nodes/stats
- nodes/log
- nodes/spec
- nodes/metrics
- pods/log
verbs:
- "*"
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: system:kube-apiserver
namespace: ""
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:kube-apiserver-to-kubelet
subjects:
- apiGroup: rbac.authorization.k8s.io
kind: User
name: kubernetes
EOF
[root@YonXin-SIT-Master01 ~]# kubectl apply -f /data/kubernetes/yaml/apiserver-to-kubelet-rbac.yaml
9.14 配置calico功能
calico.yaml百度网盘下载链接：https://pan.baidu.com/s/1c5CaBpm5C-7xHuNQ9W7bqA 提取码：tpkt
[root@YonXin-SIT-Master01 ~]# kubectl apply -f /data/kubernetes/yaml/calico.yaml
9.15 配置coredns功能
[root@YonXin-SIT-Master01 ~]# vim /data/kubernetes/yaml/coredns.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: coredns
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
kubernetes.io/bootstrapping: rbac-defaults
name: system:coredns
rules:
- apiGroups:
- ""
resources:
- endpoints
- services
- pods
- namespaces
verbs:
- list
- watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
annotations:
rbac.authorization.kubernetes.io/autoupdate: "true"
labels:
kubernetes.io/bootstrapping: rbac-defaults
name: system:coredns
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:coredns
subjects:
- kind: ServiceAccount
name: coredns
namespace: kube-system
---
apiVersion: v1
kind: ConfigMap
metadata:
name: coredns
namespace: kube-system
data:
Corefile: |
.:53 {
errors
health {
lameduck 5s
}
ready
kubernetes cluster.local in-addr.arpa ip6.arpa {
fallthrough in-addr.arpa ip6.arpa
}
prometheus :9153
forward . /etc/resolv.conf {
max_concurrent 1000
}
cache 30
loop
reload
loadbalance
}
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: coredns
namespace: kube-system
labels:
k8s-app: kube-dns
kubernetes.io/name: "CoreDNS"
spec:
# replicas: not specified here:
# 1. Default is 1.
# 2. Will be tuned in real time if DNS horizontal auto-scaling is turned on.
strategy:
type: RollingUpdate
rollingUpdate:
maxUnavailable: 1
replicas: 2
selector:
matchLabels:
k8s-app: kube-dns
template:
metadata:
labels:
k8s-app: kube-dns
spec:
priorityClassName: system-cluster-critical
serviceAccountName: coredns
tolerations:
- key: "CriticalAddonsOnly"
operator: "Exists"
nodeSelector:
kubernetes.io/os: linux
affinity:
podAntiAffinity:
preferredDuringSchedulingIgnoredDuringExecution:
- weight: 100
podAffinityTerm:
labelSelector:
matchExpressions:
- key: k8s-app
operator: In
values: ["kube-dns"]
topologyKey: kubernetes.io/hostname
containers:
- name: coredns
image: registry.cn-beijing.aliyuncs.com/dotbalo/coredns:1.7.0
imagePullPolicy: IfNotPresent
resources:
limits:
memory: 170Mi
requests:
cpu: 100m
memory: 70Mi
args: [ "-conf", "/etc/coredns/Corefile" ]
volumeMounts:
- name: config-volume
mountPath: /etc/coredns
readOnly: true
ports:
- containerPort: 53
name: dns
protocol: UDP
- containerPort: 53
name: dns-tcp
protocol: TCP
- containerPort: 9153
name: metrics
protocol: TCP
securityContext:
allowPrivilegeEscalation: false
capabilities:
add:
- NET_BIND_SERVICE
drop:
- all
readOnlyRootFilesystem: true
livenessProbe:
httpGet:
path: /health
port: 8080
scheme: HTTP
initialDelaySeconds: 60
timeoutSeconds: 5
successThreshold: 1
failureThreshold: 5
readinessProbe:
httpGet:
path: /ready
port: 8181
scheme: HTTP
dnsPolicy: Default
volumes:
- name: config-volume
configMap:
name: coredns
items:
- key: Corefile
path: Corefile
---
apiVersion: v1
kind: Service
metadata:
name: kube-dns
namespace: kube-system
annotations:
prometheus.io/port: "9153"
prometheus.io/scrape: "true"
labels:
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
kubernetes.io/name: "CoreDNS"
spec:
selector:
k8s-app: kube-dns
clusterIP: 10.96.0.10
ports:
- name: dns
port: 53
protocol: UDP
- name: dns-tcp
port: 53
protocol: TCP
- name: metrics
port: 9153
protocol: TCP
[root@YonXin-SIT-Master01 ~]# kubectl apply -f /data/kubernetes/yaml/coredns.yaml
9.16 配置dashboard功能
[root@YonXin-SIT-Master01 ~]# vim /data/kubernetes/yaml/dashboard.yaml
# Copyright 2017 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
apiVersion: v1
kind: Namespace
metadata:
name: kubernetes-dashboard
---
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
---
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
spec:
ports:
- port: 443
targetPort: 8443
type: NodePort
selector:
k8s-app: kubernetes-dashboard
---
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-certs
namespace: kubernetes-dashboard
type: Opaque
---
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-csrf
namespace: kubernetes-dashboard
type: Opaque
data:
csrf: ""
---
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-key-holder
namespace: kubernetes-dashboard
type: Opaque
---
kind: ConfigMap
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-settings
namespace: kubernetes-dashboard
---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
rules:
# Allow Dashboard to get, update and delete Dashboard exclusive secrets.
- apiGroups: [""]
resources: ["secrets"]
resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs", "kubernetes-dashboard-csrf"]
verbs: ["get", "update", "delete"]
# Allow Dashboard to get and update 'kubernetes-dashboard-settings' config map.
- apiGroups: [""]
resources: ["configmaps"]
resourceNames: ["kubernetes-dashboard-settings"]
verbs: ["get", "update"]
# Allow Dashboard to get metrics.
- apiGroups: [""]
resources: ["services"]
resourceNames: ["heapster", "dashboard-metrics-scraper"]
verbs: ["proxy"]
- apiGroups: [""]
resources: ["services/proxy"]
resourceNames: ["heapster", "http:heapster:", "https:heapster:", "dashboard-metrics-scraper", "http:dashboard-metrics-scraper"]
verbs: ["get"]
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
rules:
# Allow Metrics Scraper to get metrics from the Metrics server
- apiGroups: ["metrics.k8s.io"]
resources: ["pods", "nodes"]
verbs: ["get", "list", "watch"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: kubernetes-dashboard
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard
namespace: kubernetes-dashboard
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: kubernetes-dashboard
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: kubernetes-dashboard
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard
namespace: kubernetes-dashboard
---
kind: Deployment
apiVersion: apps/v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
spec:
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
k8s-app: kubernetes-dashboard
template:
metadata:
labels:
k8s-app: kubernetes-dashboard
spec:
securityContext:
seccompProfile:
type: RuntimeDefault
containers:
- name: kubernetes-dashboard
image: kubernetesui/dashboard:v2.5.1
imagePullPolicy: Always
ports:
- containerPort: 8443
protocol: TCP
args:
- --auto-generate-certificates
- --namespace=kubernetes-dashboard
# Uncomment the following line to manually specify Kubernetes API server Host
# If not specified, Dashboard will attempt to auto discover the API server and connect
# to it. Uncomment only if the default does not work.
# - --apiserver-host=http://my-address:port
volumeMounts:
- name: kubernetes-dashboard-certs
mountPath: /certs
# Create on-disk volume to store exec logs
- mountPath: /tmp
name: tmp-volume
livenessProbe:
httpGet:
scheme: HTTPS
path: /
port: 8443
initialDelaySeconds: 30
timeoutSeconds: 30
securityContext:
allowPrivilegeEscalation: false
readOnlyRootFilesystem: true
runAsUser: 1001
runAsGroup: 2001
volumes:
- name: kubernetes-dashboard-certs
secret:
secretName: kubernetes-dashboard-certs
- name: tmp-volume
emptyDir: {}
serviceAccountName: kubernetes-dashboard
nodeSelector:
"kubernetes.io/os": linux
# Comment the following tolerations if Dashboard must not be deployed on master
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
---
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: dashboard-metrics-scraper
name: dashboard-metrics-scraper
namespace: kubernetes-dashboard
spec:
ports:
- port: 8000
targetPort: 8000
selector:
k8s-app: dashboard-metrics-scraper
---
kind: Deployment
apiVersion: apps/v1
metadata:
labels:
k8s-app: dashboard-metrics-scraper
name: dashboard-metrics-scraper
namespace: kubernetes-dashboard
spec:
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
k8s-app: dashboard-metrics-scraper
template:
metadata:
labels:
k8s-app: dashboard-metrics-scraper
spec:
securityContext:
seccompProfile:
type: RuntimeDefault
containers:
- name: dashboard-metrics-scraper
image: kubernetesui/metrics-scraper:v1.0.7
ports:
- containerPort: 8000
protocol: TCP
livenessProbe:
httpGet:
scheme: HTTP
path: /
port: 8000
initialDelaySeconds: 30
timeoutSeconds: 30
volumeMounts:
- mountPath: /tmp
name: tmp-volume
securityContext:
allowPrivilegeEscalation: false
readOnlyRootFilesystem: true
runAsUser: 1001
runAsGroup: 2001
serviceAccountName: kubernetes-dashboard
nodeSelector:
"kubernetes.io/os": linux
# Comment the following tolerations if Dashboard must not be deployed on master
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
volumes:
- name: tmp-volume
emptyDir: {}
[root@YonXin-SIT-Master01 ~]# kubectl apply -f /data/kubernetes/yaml/dashboard.yaml
[root@YonXin-SIT-Master01 ~]# vim /data/kubernetes/yaml/dashboard-user.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: admin-user
namespace: kubernetes-dashboard
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: admin-user
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: admin-user
namespace: kubernetes-dashboard
[root@YonXin-SIT-Master01 ~]# kubectl apply -f /data/kubernetes/yaml/dashboard-user.yaml
[root@YonXin-SIT-Master01 ~]# kubectl -n kubernetes-dashboard create token admin-user
9.17 配置nginx-ingress-controller功能
vim /data/kubernetes/yaml/nginx-ingress-controller.yaml
apiVersion: v1
kind: Namespace
metadata:
labels:
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
name: ingress-nginx
---
apiVersion: v1
automountServiceAccountToken: true
kind: ServiceAccount
metadata:
labels:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx
namespace: ingress-nginx
---
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
app.kubernetes.io/component: admission-webhook
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx-admission
namespace: ingress-nginx
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
labels:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx
namespace: ingress-nginx
rules:
- apiGroups:
- ""
resources:
- namespaces
verbs:
- get
- apiGroups:
- ""
resources:
- configmaps
- pods
- secrets
- endpoints
verbs:
- get
- list
- watch
- apiGroups:
- ""
resources:
- services
verbs:
- get
- list
- watch
- apiGroups:
- networking.k8s.io
resources:
- ingresses
verbs:
- get
- list
- watch
- apiGroups:
- networking.k8s.io
resources:
- ingresses/status
verbs:
- update
- apiGroups:
- networking.k8s.io
resources:
- ingressclasses
verbs:
- get
- list
- watch
- apiGroups:
- ""
resourceNames:
- ingress-controller-leader
resources:
- configmaps
verbs:
- get
- update
- apiGroups:
- ""
resources:
- configmaps
verbs:
- create
- apiGroups:
- ""
resources:
- events
verbs:
- create
- patch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
labels:
app.kubernetes.io/component: admission-webhook
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx-admission
namespace: ingress-nginx
rules:
- apiGroups:
- ""
resources:
- secrets
verbs:
- get
- create
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx
rules:
- apiGroups:
- ""
resources:
- configmaps
- endpoints
- nodes
- pods
- secrets
- namespaces
verbs:
- list
- watch
- apiGroups:
- ""
resources:
- nodes
verbs:
- get
- apiGroups:
- ""
resources:
- services
verbs:
- get
- list
- watch
- apiGroups:
- networking.k8s.io
resources:
- ingresses
verbs:
- get
- list
- watch
- apiGroups:
- ""
resources:
- events
verbs:
- create
- patch
- apiGroups:
- networking.k8s.io
resources:
- ingresses/status
verbs:
- update
- apiGroups:
- networking.k8s.io
resources:
- ingressclasses
verbs:
- get
- list
- watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
app.kubernetes.io/component: admission-webhook
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx-admission
rules:
- apiGroups:
- admissionregistration.k8s.io
resources:
- validatingwebhookconfigurations
verbs:
- get
- update
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx
namespace: ingress-nginx
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: ingress-nginx
subjects:
- kind: ServiceAccount
name: ingress-nginx
namespace: ingress-nginx
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
app.kubernetes.io/component: admission-webhook
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx-admission
namespace: ingress-nginx
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: ingress-nginx-admission
subjects:
- kind: ServiceAccount
name: ingress-nginx-admission
namespace: ingress-nginx
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
labels:
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: ingress-nginx
subjects:
- kind: ServiceAccount
name: ingress-nginx
namespace: ingress-nginx
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
labels:
app.kubernetes.io/component: admission-webhook
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx-admission
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: ingress-nginx-admission
subjects:
- kind: ServiceAccount
name: ingress-nginx-admission
namespace: ingress-nginx
---
apiVersion: v1
data:
allow-snippet-annotations: "true"
kind: ConfigMap
metadata:
labels:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx-controller
namespace: ingress-nginx
---
apiVersion: v1
kind: Service
metadata:
labels:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx-controller
namespace: ingress-nginx
spec:
ports:
- appProtocol: http
name: http
port: 80
protocol: TCP
targetPort: http
- appProtocol: https
name: https
port: 443
protocol: TCP
targetPort: https
selector:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
type: ClusterIP
---
apiVersion: v1
kind: Service
metadata:
labels:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx-controller-admission
namespace: ingress-nginx
spec:
ports:
- appProtocol: https
name: https-webhook
port: 443
targetPort: webhook
selector:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
type: ClusterIP
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
labels:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx-controller
namespace: ingress-nginx
spec:
minReadySeconds: 0
revisionHistoryLimit: 10
selector:
matchLabels:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
template:
metadata:
labels:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
spec:
hostNetwork: true
containers:
- args:
- /nginx-ingress-controller
# - --publish-service=$(POD_NAMESPACE)/ingress-nginx-controller
- --election-id=ingress-controller-leader
- --controller-class=k8s.io/ingress-nginx
- --ingress-class=nginx
- --configmap=$(POD_NAMESPACE)/ingress-nginx-controller
- --validating-webhook=:8443
- --validating-webhook-certificate=/usr/local/certificates/cert
- --validating-webhook-key=/usr/local/certificates/key
env:
- name: POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
- name: LD_PRELOAD
value: /usr/local/lib/libmimalloc.so
image: registry.cn-hangzhou.aliyuncs.com/google_containers/nginx-ingress-controller:v1.0.0
imagePullPolicy: IfNotPresent
lifecycle:
preStop:
exec:
command:
- /wait-shutdown
livenessProbe:
failureThreshold: 5
httpGet:
path: /healthz
port: 10254
scheme: HTTP
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
name: controller
ports:
- containerPort: 80
name: http
protocol: TCP
- containerPort: 443
name: https
protocol: TCP
- containerPort: 8443
name: webhook
protocol: TCP
readinessProbe:
failureThreshold: 3
httpGet:
path: /healthz
port: 10254
scheme: HTTP
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
resources:
requests:
cpu: 100m
memory: 90Mi
securityContext:
allowPrivilegeEscalation: true
capabilities:
add:
- NET_BIND_SERVICE
drop:
- ALL
runAsUser: 101
volumeMounts:
- mountPath: /usr/local/certificates/
name: webhook-cert
readOnly: true
dnsPolicy: ClusterFirst
nodeSelector:
kubernetes.io/os: linux
node-role.kubernetes.io/ingress: ""
serviceAccountName: ingress-nginx
terminationGracePeriodSeconds: 300
volumes:
- name: webhook-cert
secret:
secretName: ingress-nginx-admission
---
apiVersion: batch/v1
kind: Job
metadata:
labels:
app.kubernetes.io/component: admission-webhook
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx-admission-create
namespace: ingress-nginx
spec:
template:
metadata:
labels:
app.kubernetes.io/component: admission-webhook
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx-admission-create
spec:
containers:
- args:
- create
- --host=ingress-nginx-controller-admission,ingress-nginx-controller-admission.$(POD_NAMESPACE).svc
- --namespace=$(POD_NAMESPACE)
- --secret-name=ingress-nginx-admission
env:
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
image: registry.cn-hangzhou.aliyuncs.com/google_containers/kube-webhook-certgen:v1.0
imagePullPolicy: IfNotPresent
name: create
securityContext:
allowPrivilegeEscalation: false
nodeSelector:
kubernetes.io/os: linux
restartPolicy: OnFailure
securityContext:
fsGroup: 2000
runAsNonRoot: true
runAsUser: 2000
serviceAccountName: ingress-nginx-admission
---
apiVersion: batch/v1
kind: Job
metadata:
labels:
app.kubernetes.io/component: admission-webhook
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx-admission-patch
namespace: ingress-nginx
spec:
template:
metadata:
labels:
app.kubernetes.io/component: admission-webhook
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx-admission-patch
spec:
containers:
- args:
- patch
- --webhook-name=ingress-nginx-admission
- --namespace=$(POD_NAMESPACE)
- --patch-mutating=false
- --secret-name=ingress-nginx-admission
- --patch-failure-policy=Fail
env:
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
image: registry.cn-hangzhou.aliyuncs.com/google_containers/kube-webhook-certgen:v1.0
imagePullPolicy: IfNotPresent
name: patch
securityContext:
allowPrivilegeEscalation: false
nodeSelector:
kubernetes.io/os: linux
restartPolicy: OnFailure
securityContext:
fsGroup: 2000
runAsNonRoot: true
runAsUser: 2000
serviceAccountName: ingress-nginx-admission
---
apiVersion: networking.k8s.io/v1
kind: IngressClass
metadata:
labels:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: nginx
spec:
controller: k8s.io/ingress-nginx
---
apiVersion: admissionregistration.k8s.io/v1
kind: ValidatingWebhookConfiguration
metadata:
labels:
app.kubernetes.io/component: admission-webhook
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.2.0
name: ingress-nginx-admission
webhooks:
- admissionReviewVersions:
- v1
clientConfig:
service:
name: ingress-nginx-controller-admission
namespace: ingress-nginx
path: /networking/v1/ingresses
failurePolicy: Fail
matchPolicy: Equivalent
name: validate.nginx.ingress.kubernetes.io
rules:
- apiGroups:
- networking.k8s.io
apiVersions:
- v1
operations:
- CREATE
- UPDATE
resources:
- ingresses
sideEffects: None
[root@YonXin-SIT-Master01 ~]# kubectl apply -f /data/kubernetes/yaml/nginx-ingress-controller.yaml
[root@YonXin-SIT-Master01 ~]# vim /data/kubernetes/yaml/test-nginx.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
namespace: default
spec:
replicas: 1
selector:
matchLabels:
app: nginx-pod
template:
metadata:
labels:
app: nginx-pod
spec:
containers:
- name: nginx
image: nginx:1.17.1
imagePullPolicy: IfNotPresent
ports:
- containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
name: nginx-service
namespace: default
spec:
type: ClusterIP
ports:
- port: 80
name: nginx
selector:
app: nginx-pod
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: nginx-ingress
namespace: default
spec:
ingressClassName: nginx #必须存在,否则ingress状态下Address字段无法显示NodeIP！
rules:
- host: "test-nginx.k8s-ingress.com"
http:
paths:
- pathType: Prefix
path: "/"
backend:
service:
name: nginx-service
port:
number: 80
---
[root@YonXin-SIT-Master01 ~]# kubectl apply -f /data/kubernetes/yaml/test-nginx.yaml
[root@YonXin-SIT-Master01 ~]# vim /data/kubernetes/yaml/test-tomcat.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: tomcat-deployment
namespace: default
spec:
replicas: 1
selector:
matchLabels:
app: tomcat-pod
template:
metadata:
labels:
app: tomcat-pod
spec:
containers:
- name: tomcat
image: tomcat:8.5-jre10-slim
imagePullPolicy: IfNotPresent
ports:
- containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
name: tomcat-service
namespace: default
spec:
type: NodePort
ports:
- port: 8080
name: tomcat
selector:
app: tomcat-pod
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: tomcat-ingress
namespace: default
spec:
ingressClassName: nginx #必须存在,否则ingress状态下Address字段无法显示NodeIP！
rules:
- host: "test-tomcat.k8s-ingress.com"
http:
paths:
- pathType: Prefix
path: "/"
backend:
service:
name: tomcat-service
port:
number: 8080
---
[root@YonXin-SIT-Master01 ~]# kubectl apply -f /data/kubernetes/yaml/test-tomcat.yaml
(1) 在本地电脑上配置hosts解析www.yonxin100.com域名IP为前端nginx主机的IP
C:\Windows\System32\drivers\etc\hosts
10.0.0.4 www.yonxin100.com
(2) 访问nginx代理ingress的nginx域名服务http://www.yonxin100.com/nginx/
(3) 访问nginx代理ingress的tomcat域名服务http://www.yonxin100.com/tomcat/
10. 安装其他k8s-master服务
部署Master0X 节点：将Master01所有K8s文件拷贝，删除如下文件，修改涉及配置启动所有服务即可~
[root@YonXin-SIT-Master02 ~]# rm -f /data/kubernetes/config/kubelet.kubeconfig && rm -f /data/kubernetes/pki/kubelet*
[root@YonXin-SIT-Master02 ~]# kubectl get csr //查看kubelet证书请求(重要)
[root@YonXin-SIT-Master02 ~]# kubectl certificate approve node-csr-XXXXXXXX //批准kubelet证书申请(重要)
11. 安装新的k8s-node服务
部署新Node节点：将Master01所有K8s文件拷贝，删除如下文件，修改kubelet/kube-proxy配置启动服务~
[root@YonXin-SIT-node01 ~]# rm -f /data/kubernetes/config/kubelet.kubeconfig && rm -f /data/kubernetes/pki/kubelet*
[root@YonXin-SIT-node01 ~]# kubectl get csr //查看kubelet证书请求(重要)
[root@YonXin-SIT-node01 ~]# kubectl certificate approve node-csr-XXXXXXXX //批准kubelet证书申请(重要)
[root@YonXin-SIT-node01 ~]# kubectl label node [nodename] node-role.kubernetes.io/node= //给node打标签
12. 日常运维服务
12.1 如何把受损的etcd重新添加到集群
1.删除受损节点的成员信息
[root@YonXin-SIT-Master01 ~]# etcdctl --endpoints="https://10.0.0.1:2379" --cacert=/data/etcd/cert/ca.pem --cert=/data/etcd/cert/etcd.pem --key=/data/etcd/cert/etcd-key.pem member remove fde9dd315b6d0b2
2.在受损节点上删除--data-dir存储的数据
[root@YonXin-SIT-Master02 ~]# rm -rf /data/etcd/data/*
3.在受损节点上重新加入集群
[root@YonXin-SIT-Master02 ~]# etcdctl member add etcd2 --peer-urls="https://10.0.0.2:2380" --endpoints="https://10.0.0.1:2379" --cacert=/data/etcd/cert/ca.pem --cert=/data/etcd/cert/etcd.pem --key=/data/etcd/cert/etcd-key.pem
4.修改受损节点etcd启动参数
将etcd.service的--initial-cluster-state启动参数，改为--initial-cluster-state=existing
5.重启受损节点服务
[root@YonXin-SIT-Master02 ~]# service etcd restart
12.2 如何监控K8S集群系统
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