二进制安装k8s day01

环境准备10.0.0.11hdss-11.host.com10.0.0.12hdss-12.host.com10.0.0.21hdss-21.host.com10.0.0.22hdss-22.host.com10.0.0.200hdss-200.host.com虚拟机环境selinuxfirewalld内核版本配置阿里云源：curl -o /e...

雷神_zero

803人浏览 · 2019-12-23 13:08:55

雷神_zero · 2019-12-23 13:08:55 发布

环境准备

版本：
10.4.7.11 hdss7-11.host.com
10.4.7.12 hdss7-12.host.com
10.4.7.21 hdss7-21.host.com
10.4.7.22 hdss7-22.host.com
10.4.7.200 hdss7-200.host.com
在这里插入图片描述

虚拟机环境

selinux
firewalld
内核版本
在这里插入图片描述

配置阿里云源：

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
yum clean all && yum makecache

安装必要工具

yum install wget net-tools telnet tree nmap sysstat lrzsz dos2unix bind-utils -y

11上 bind 准备

yum install bind -y
[root@hdss-11 ~]# rpm -qa bind
bind-9.11.4-9.P2.el7.x86_64

# 主配置文件
[root@hdss-11 ~]# vi /etc/named.conf 
listen-on port 53 { 10.4.7.11; };   # 默认localhost只有本机能用 
allow-query     { any; };          # 都允许访问
forwarders      { 10.4.7.254; };     # 手动添加一行，本地没有，向上一级查询，网关地址
recursion yes;                    # 递归查询
dnssec-enable no;
dnssec-validation no;

[root@hdss-11 ~]# named-checkconf    # 没有报错就ok

# 区域配置文件
[root@hdss-11 ~]# vim /etc/named.rfc1912.zones  #  自己的dns，要管理哪些域
zone "host.com" IN {			## 主机域
        type  master;
        file  "host.com.zone";
        allow-update { 10.4.7.11; };			##  允许自己本地update
};

zone "od.com" IN {			## 业务域
        type  master;
        file  "od.com.zone";
        allow-update { 10.4.7.11; };
};

# 编辑区域数据文件
[root@hdss-11 named]# vim /var/named/host.com.zone
i$ORIGIN host.com.
$TTL 600	; 10 minutes
@       IN SOA	dns.host.com. dnsadmin.host.com. (
				2019111001 ; serial
				10800      ; refresh (3 hours)
				900        ; retry (15 minutes)
				604800     ; expire (1 week)
				86400      ; minimum (1 day)
				)
			NS   dns.host.com.
$TTL 60	; 1 minute
dns                A    10.4.7.11
HDSS7-11           A    10.4.7.11
HDSS7-12           A    10.4.7.12
HDSS7-21           A    10.4.7.21
HDSS7-22           A    10.4.7.22
HDSS7-200          A    10.4.7.200

vim /var/named/od.com.zone
i$ORIGIN od.com.
$TTL 600	; 10 minutes
@   		IN SOA	dns.od.com. dnsadmin.od.com. (
				2019111001 ; serial
				10800      ; refresh (3 hours)
				900        ; retry (15 minutes)
				604800     ; expire (1 week)
				86400      ; minimum (1 day)
				)
				NS   dns.od.com.
$TTL 60	; 1 minute
dns                A    10.4.7.11


[root@hdss-11 named]# named-checkconf 
[root@hdss-11 named]# systemctl start named
[root@hdss-11 named]# netstat -lantpu | grep 53
[root@hdss-11 named]# dig -t A hdss7-21.host.com @10.4.7.11 +short
10.4.7.21
[root@hdss-11 ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0 
DNS1=10.4.7.11
[root@hdss-11 ~]# vim /etc/resolv.conf
# Generated by NetworkManager
search host.com             # 支持短域名
nameserver 10.0.0.11

## 修改其他四台机器网卡dns为10.0.0.11

200 上签发证书准备

~]# wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64 -O /usr/bin/cfssl
~]# wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64 -O /usr/bin/cfssl-json
~]# wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64 -O /usr/bin/cfssl-certinfo
~]# chmod +x /usr/bin/cfssl*

[root@hdss-200 opt]# mkdir /opt/certs
 # 创建ca证书的请求文件
vim /opt/certs/ca-csr.json 
i{
    "CN": "OldboyEdu",
    "hosts": [
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "ST": "beijing",
            "L": "beijing",
            "O": "od",
            "OU": "ops"
        }
    ],
    "ca": {
        "expiry": "175200h"
    }
}
# 生成ca证书和私钥
certs]# cfssl gencert -initca ca-csr.json | cfssl-json -bare ca
[root@hdss-200 certs]# ll
total 16
-rw-r--r-- 1 root root  993 Dec 22 12:08 ca.csr
-rw-r--r-- 1 root root  328 Dec 22 12:01 ca-csr.json
-rw------- 1 root root 1675 Dec 22 12:08 ca-key.pem
-rw-r--r-- 1 root root 1346 Dec 22 12:08 ca.pem
## 第一次没有生成文件，重新下载工具，解决。可能第一次下载的有问题。

200、21、22 上部署docker 环境

curl -fsSL https://get.docker.com | bash -s docker --mirror Aliyun
mkdir -p /data/docker /etc/docker
vi /etc/docker/daemon.json
i{
  "graph": "/data/docker",
  "storage-driver": "overlay2",
  "insecure-registries": ["registry.access.redhat.com","quay.io","harbor.od.com"],
  "registry-mirrors": ["https://q2gr04ke.mirror.aliyuncs.com"],
  "bip": "172.7.21.1/24",
  "exec-opts": ["native.cgroupdriver=systemd"],
  "live-restore": true
}
[root@hdss-21 ~]# systemctl start docker

## 其余两台一样配置，"bip": "172.7.21.1/24",改成22， 和200 对应的。

200 上配置Harbor 私有仓库

# 官方地址：https://github.com/goharbor/harbor
# 1.7.5以前的版本可能会呗越权管理员权限
cd /opt
mkdir src
src]# tar xf harbor-offline-installer-v1.8.3.tgz -C /opt/
opt]# mv harbor/ harbor-v1.8.3
opt]# ln -s /opt/harbor-v1.8.3/ /opt/harbor
vim /opt/harbor/harbor.yml
hostname: harbor.od.com
http:
  port: 180
data_volume: /data/harbor
location: /data/harbor/logs

mkdir /data/harbor/logs -p
yum install docker-compose -y
cd /opt/harbor
sh /opt/harbor/install.sh
docker-compose ps   ## 需要在当前目录下，别的目录不行
# 需要装nginx反代
yum install nginx -y
vim /etc/nginx/conf.d/harbor.od.com.conf
iserver {
    listen       80;
    server_name  harbor.od.com;

    client_max_body_size 1000m;

    location / {
        proxy_pass http://127.0.0.1:180;
    }
}
[root@hdss-200 harbor]# systemctl restart nginx
[root@hdss-200 harbor]# systemctl enable nginx

HDSS-11上:
~]# vi /var/named/od.com.zone
harbor             A    10.4.7.200
注意serial前滚一个序号

~]# systemctl restart named

~]# dig -t A harbor.od.com @10.4.7.11 +short
10.4.7.200

## 本地浏览器修改解析，浏览器打开http://harbor.od.com
## 推送镜像到 harbor
docker pull nginx:1.7.9 <==> docker pull docker.io/library/nginx:1.7.9
docker tag 84581e99d807 harbor.od.com/public/nginx:v1.7.9
docker login harbor.od.com
## harbor 上创建名称是public 的公共项目
docker push harbor.od.com/public/nginx:v1.7.9

12、21、22 上 etcd 服务部署

##  200上创建基于根证书的  config 配置文件
cd /opt/certs
vim /opt/certs/ca-config.json
i{
    "signing": {
        "default": {
            "expiry": "175200h"
        },
        "profiles": {
            "server": {
                "expiry": "175200h",
                "usages": [
                    "signing",
                    "key encipherment",
                    "server auth"
                ]
            },
            "client": {
                "expiry": "175200h",
                "usages": [
                    "signing",
                    "key encipherment",
                    "client auth"
                ]
            },
            "peer": {
                "expiry": "175200h",
                "usages": [
                    "signing",
                    "key encipherment",
                    "server auth",
                    "client auth"
                ]
            }
        }
    }
}

## 创建 etcd 证书请求的文件
vi etcd-peer-csr.json
i{
    "CN": "k8s-etcd",
    "hosts": [
        "10.4.7.11",
        "10.4.7.12",
        "10.4.7.21",
        "10.4.7.22"
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "ST": "beijing",
            "L": "beijing",
            "O": "od",
            "OU": "ops"
        }
    ]
}
certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=peer etcd-peer-csr.json |cfssl-json -bare etcd-peer

## 12 上装 etcd
mkdir /opt/src
cd src
useradd -s /sbin/nologin -M etcd
https://github.com/etcd-io/etcd/tags # 建议使用稳定的3.1 系列
 tar xf etcd-v3.1.20-linux-amd64.tar.gz -C /opt
 cd /opt
mv etcd-v3.1.20-linux-amd64/ etcd-v3.1.20
 ln -s etcd-v3.1.20/ etcd
[root@hdss-12 opt]# ll
total 0
lrwxrwxrwx 1 root   root   13 Dec 22 16:28 etcd -> etcd-v3.1.20/
drwxr-xr-x 3 478493 89939 123 Oct 11  2018 etcd-v3.1.20
drwxr-xr-x 2 root   root   45 Dec 22 16:27 src

mkdir -p /opt/etcd/certs /data/etcd /data/logs/etcd-server
cd /opt/etcd/certs
scp 10.4.7.200:/opt/certs/etcd-peer.pem ./etcd-peer.pem

total 12
-rw-r--r-- 1 root root 1346 Dec 22 16:31 ca.pem
-rw------- 1 root root 1679 Dec 22 16:32 etcd-peer-key.pem
-rw-r--r-- 1 root root 1428 Dec 22 16:32 etcd-peer.pem
## cert 都弄好了， 创建 etcd 的启动文件
vi /opt/etcd/etcd-server-startup.sh
i#!/bin/sh
./etcd --name etcd-server-7-12 \
       --data-dir /data/etcd/etcd-server \
       --listen-peer-urls https://10.4.7.12:2380 \
       --listen-client-urls https://10.4.7.12:2379,http://127.0.0.1:2379 \
       --quota-backend-bytes 8000000000 \
       --initial-advertise-peer-urls https://10.4.7.12:2380 \
       --advertise-client-urls https://10.4.7.12:2379,http://127.0.0.1:2379 \
       --initial-cluster  etcd-server-7-12=https://10.4.7.12:2380,etcd-server-7-21=https://10.4.7.21:2380,etcd-server-7-22=https://10.4.7.22:2380 \
       --ca-file ./certs/ca.pem \
       --cert-file ./certs/etcd-peer.pem \
       --key-file ./certs/etcd-peer-key.pem \
       --client-cert-auth  \
       --trusted-ca-file ./certs/ca.pem \
       --peer-ca-file ./certs/ca.pem \
       --peer-cert-file ./certs/etcd-peer.pem \
       --peer-key-file ./certs/etcd-peer-key.pem \
       --peer-client-cert-auth \
       --peer-trusted-ca-file ./certs/ca.pem \
       --log-output stdout

chmod +x /opt/etcd/etcd-server-startup.sh
chown -R etcd.etcd /opt/etcd-v3.1.20/
chown -R etcd.etcd /data/etcd/
chown -R etcd.etcd /data/logs/etcd-server/
yum install supervisor -y   ## 管理后台进程，进程掉了会自动拉起来
systemctl start supervisord 
systemctl enable supervisord

## 创建 supervisord 的启动文件
vi /etc/supervisord.d/etcd-server.ini
i[program:etcd-server-7-12]
command=/opt/etcd/etcd-server-startup.sh                        ; the program (relative uses PATH, can take args)
numprocs=1                                                      ; number of processes copies to start (def 1)
directory=/opt/etcd                                             ; directory to cwd to before exec (def no cwd)
autostart=true                                                  ; start at supervisord start (default: true)
autorestart=true                                                ; retstart at unexpected quit (default: true)
startsecs=30                                                    ; number of secs prog must stay running (def. 1)
startretries=3                                                  ; max # of serial start failures (default 3)
exitcodes=0,2                                                   ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT                                                 ; signal used to kill process (default TERM)
stopwaitsecs=10                                                 ; max num secs to wait b4 SIGKILL (default 10)
user=etcd                                                       ; setuid to this UNIX account to run the program
redirect_stderr=true                                            ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/etcd-server/etcd.stdout.log           ; stdout log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB                                    ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4                                        ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB                                     ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false                                     ; emit events on stdout writes (default false)

supervisorctl update
etcd-server-7-12: added process group

[root@hdss7-12 etcd]# supervisorctl status
etcd-server-7-12                 RUNNING   pid 22656, uptime 0:00:35
[root@hdss7-12 etcd]# netstat -luntp|grep etcd
tcp        0      0 10.4.7.12:2379          0.0.0.0:*               LISTEN      22657/./etcd        
tcp        0      0 127.0.0.1:2379          0.0.0.0:*               LISTEN      22657/./etcd        
tcp        0      0 10.4.7.12:2380          0.0.0.0:*               LISTEN      22657/./etcd 

三个etcd节点都起来后:

./etcdctl cluster-health
member 988139385f78284 is healthy: got healthy result from http://127.0.0.1:2379
member 5a0ef2a004fc4349 is healthy: got healthy result from http://127.0.0.1:2379
member f4a0cb0a765574a8 is healthy: got healthy result from http://127.0.0.1:2379
cluster is healthy

./etcdctl member list
988139385f78284: name=etcd-server-7-22 peerURLs=https://10.4.7.22:2380 clientURLs=http://127.0.0.1:2379,https://10.4.7.22:2379 isLeader=false
5a0ef2a004fc4349: name=etcd-server-7-21 peerURLs=https://10.4.7.21:2380 clientURLs=http://127.0.0.1:2379,https://10.4.7.21:2379 isLeader=false
f4a0cb0a765574a8: name=etcd-server-7-12 peerURLs=https://10.4.7.12:2380 clientURLs=http://127.0.0.1:2379,https://10.4.7.12:2379 isLeader=true

21、22 上部署apiserver

## apiserver部署
# 200 上 certs 目录下
## 签发client证书，apiserver找etcd 需要的证书， apiserver 和 etcd 集群通信使用，此时apiserver 是客户端，etcd集群是服务端
# vi client-csr.json
{
    "CN": "k8s-node",
    "hosts": [
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "ST": "beijing",
            "L": "beijing",
            "O": "od",
            "OU": "ops"
        }
    ]
}
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=client client-csr.json |cfssl-json -bare client

## 给apiserver 创建一个server证书，apiserver 对外通信， 你要来找我，也要通过认证
# vi apiserver-csr.json
i{
    "CN": "k8s-apiserver",
    "hosts": [
        "127.0.0.1",
        "192.168.0.1",
        "kubernetes.default",
        "kubernetes.default.svc",
        "kubernetes.default.svc.cluster",
        "kubernetes.default.svc.cluster.local",
        "10.4.7.10",
        "10.4.7.21",
        "10.4.7.22",
        "10.4.7.23"
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "ST": "beijing",
            "L": "beijing",
            "O": "od",
            "OU": "ops"
        }
    ]
}

# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server apiserver-csr.json |cfssl-json -bare apiserver

# 21上操作：
mkdir /opt/src
cd /opt/src
rz kubernetes-server-linux-amd64-v1.15.2.tar.gz
tar xvf kubernetes-server-linux-amd64-v1.15.2.tar.gz -C /opt
cd /opt/
mv kubernetes/ kubernetes-v1.15.2
ln -s kubernetes-v1.15.2/ kubernetes

mkdir /opt/kubernetes/server/bin/cert
scp 证书3套
# ll /opt/kubernetes/server/bin/cert
total 24
-rw------- 1 root root 1679 Nov 10 17:42 apiserver-key.pem
-rw-r--r-- 1 root root 1598 Nov 10 17:42 apiserver.pem
-rw------- 1 root root 1679 Nov 10 17:41 ca-key.pem
-rw-r--r-- 1 root root 1346 Nov 10 17:41 ca.pem
-rw------- 1 root root 1675 Nov 10 17:41 client-key.pem
-rw-r--r-- 1 root root 1363 Nov 10 17:41 client.pem
bin]# mkdir conf

conf]# vi audit.yaml   
iapiVersion: audit.k8s.io/v1beta1 # This is required.
kind: Policy
# Don't generate audit events for all requests in RequestReceived stage.
omitStages:
  - "RequestReceived"
rules:
  # Log pod changes at RequestResponse level
  - level: RequestResponse
    resources:
    - group: ""
      # Resource "pods" doesn't match requests to any subresource of pods,
      # which is consistent with the RBAC policy.
      resources: ["pods"]
  # Log "pods/log", "pods/status" at Metadata level
  - level: Metadata
    resources:
    - group: ""
      resources: ["pods/log", "pods/status"]

  # Don't log requests to a configmap called "controller-leader"
  - level: None
    resources:
    - group: ""
      resources: ["configmaps"]
      resourceNames: ["controller-leader"]

  # Don't log watch requests by the "system:kube-proxy" on endpoints or services
  - level: None
    users: ["system:kube-proxy"]
    verbs: ["watch"]
    resources:
    - group: "" # core API group
      resources: ["endpoints", "services"]

  # Don't log authenticated requests to certain non-resource URL paths.
  - level: None
    userGroups: ["system:authenticated"]
    nonResourceURLs:
    - "/api*" # Wildcard matching.
    - "/version"

  # Log the request body of configmap changes in kube-system.
  - level: Request
    resources:
    - group: "" # core API group
      resources: ["configmaps"]
    # This rule only applies to resources in the "kube-system" namespace.
    # The empty string "" can be used to select non-namespaced resources.
    namespaces: ["kube-system"]

  # Log configmap and secret changes in all other namespaces at the Metadata level.
  - level: Metadata
    resources:
    - group: "" # core API group
      resources: ["secrets", "configmaps"]

  # Log all other resources in core and extensions at the Request level.
  - level: Request
    resources:
    - group: "" # core API group
    - group: "extensions" # Version of group should NOT be included.

  # A catch-all rule to log all other requests at the Metadata level.
  - level: Metadata
    # Long-running requests like watches that fall under this rule will not
    # generate an audit event in RequestReceived.
    omitStages:
      - "RequestReceived"

vi /opt/kubernetes/server/bin/kube-apiserver.sh
i#!/bin/bash
./kube-apiserver \
  --apiserver-count 2 \
  --audit-log-path /data/logs/kubernetes/kube-apiserver/audit-log \
  --audit-policy-file ./conf/audit.yaml \
  --authorization-mode RBAC \
  --client-ca-file ./cert/ca.pem \
  --requestheader-client-ca-file ./cert/ca.pem \
  --enable-admission-plugins NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,MutatingAdmissionWebhook,ValidatingAdmissionWebhook,ResourceQuota \
  --etcd-cafile ./cert/ca.pem \
  --etcd-certfile ./cert/client.pem \
  --etcd-keyfile ./cert/client-key.pem \
  --etcd-servers https://10.4.7.12:2379,https://10.4.7.21:2379,https://10.4.7.22:2379 \
  --service-account-key-file ./cert/ca-key.pem \
  --service-cluster-ip-range 192.168.0.0/16 \
  --service-node-port-range 3000-29999 \
  --target-ram-mb=1024 \
  --kubelet-client-certificate ./cert/client.pem \
  --kubelet-client-key ./cert/client-key.pem \
  --log-dir  /data/logs/kubernetes/kube-apiserver \
  --tls-cert-file ./cert/apiserver.pem \
  --tls-private-key-file ./cert/apiserver-key.pem \
  --v 2
  
# chmod +x kube-apiserver.sh

# vi /etc/supervisord.d/kube-apiserver.ini
 i[program:kube-apiserver-7-21]
command=/opt/kubernetes/server/bin/kube-apiserver.sh            ; the program (relative uses PATH, can take args)
numprocs=1                                                      ; number of processes copies to start (def 1)
directory=/opt/kubernetes/server/bin                            ; directory to cwd to before exec (def no cwd)
autostart=true                                                  ; start at supervisord start (default: true)
autorestart=true                                                ; retstart at unexpected quit (default: true)
startsecs=30                                                    ; number of secs prog must stay running (def. 1)
startretries=3                                                  ; max # of serial start failures (default 3)
exitcodes=0,2                                                   ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT                                                 ; signal used to kill process (default TERM)
stopwaitsecs=10                                                 ; max num secs to wait b4 SIGKILL (default 10)
user=root                                                       ; setuid to this UNIX account to run the program
redirect_stderr=true                                            ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-apiserver/apiserver.stdout.log        ; stderr log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB                                    ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4                                        ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB                                     ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false                                     ; emit events on stdout writes (default false)

# mkdir -p /data/logs/kubernetes/kube-apiserver
# supervisorctl update

11 和 12 上nginx 反代，7443代理apiserver 的6443.四层

HDSS7-11和HDSS7-12上:
# yum install nginx -y

/etc/nginx/nginx.conf

stream {
    upstream kube-apiserver {
        server 10.4.7.21:6443     max_fails=3 fail_timeout=30s;
        server 10.4.7.22:6443     max_fails=3 fail_timeout=30s;
    }
    server {
        listen 7443;
        proxy_connect_timeout 2s;
        proxy_timeout 900s;
        proxy_pass kube-apiserver;
    }
}

# yum install keepalived -y

/etc/keepalived/check_port.sh
#!/bin/bash
#keepalived 监控端口脚本
#使用方法：
#在keepalived的配置文件中
#vrrp_script check_port {#创建一个vrrp_script脚本,检查配置
#    script "/etc/keepalived/check_port.sh 6379" #配置监听的端口
#    interval 2 #检查脚本的频率,单位（秒）
#}
CHK_PORT=$1
if [ -n "$CHK_PORT" ];then
        PORT_PROCESS=`ss -lnt|grep $CHK_PORT|wc -l`
        if [ $PORT_PROCESS -eq 0 ];then
                echo "Port $CHK_PORT Is Not Used,End."
                exit 1
        fi
else
        echo "Check Port Cant Be Empty!"
fi

# chmod +x /etc/keepalived/check_port.sh

keepalived 主:

! Configuration File for keepalived

global_defs {
   router_id 10.4.7.11

}

vrrp_script chk_nginx {
    script "/etc/keepalived/check_port.sh 7443"
    interval 2
    weight -20
}

vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 251
    priority 100
    advert_int 1
    mcast_src_ip 10.4.7.11
    nopreempt

    authentication {
        auth_type PASS
        auth_pass 11111111
    }
    track_script {
         chk_nginx
    }
    virtual_ipaddress {
        10.4.7.10
    }
}

keepalived从:

! Configuration File for keepalived
global_defs {
	router_id 10.4.7.12
}
vrrp_script chk_nginx {
	script "/etc/keepalived/check_port.sh 7443"
	interval 2
	weight -20
}
vrrp_instance VI_1 {
	state BACKUP
	interface eth0
	virtual_router_id 251
	mcast_src_ip 10.4.7.12
	priority 90
	advert_int 1
	authentication {
		auth_type PASS
		auth_pass 11111111
	}
	track_script {
		chk_nginx
	}
	virtual_ipaddress {
		10.4.7.10
	}
}

部署scheduler 和 controller manager

vi /opt/kubernetes/server/bin/kube-controller-manager.sh

#!/bin/sh
./kube-controller-manager \
  --cluster-cidr 172.7.0.0/16 \
  --leader-elect true \
  --log-dir /data/logs/kubernetes/kube-controller-manager \
  --master http://127.0.0.1:8080 \
  --service-account-private-key-file ./cert/ca-key.pem \
  --service-cluster-ip-range 192.168.0.0/16 \
  --root-ca-file ./cert/ca.pem \
  --v 2

  chmod +x /opt/kubernetes/server/bin/kube-controller-manager.sh
  mkdir -p /data/logs/kubernetes/kube-controller-manager
  
  /etc/supervisord.d/kube-conntroller-manager.ini
  
[program:kube-controller-manager-7-21]
command=/opt/kubernetes/server/bin/kube-controller-manager.sh                     ; the program (relative uses PATH, can take args)
numprocs=1                                                                        ; number of processes copies to start (def 1)
directory=/opt/kubernetes/server/bin                                              ; directory to cwd to before exec (def no cwd)
autostart=true                                                                    ; start at supervisord start (default: true)
autorestart=true                                                                  ; retstart at unexpected quit (default: true)
startsecs=30                                                                      ; number of secs prog must stay running (def. 1)
startretries=3                                                                    ; max # of serial start failures (default 3)
exitcodes=0,2                                                                     ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT                                                                   ; signal used to kill process (default TERM)
stopwaitsecs=10                                                                   ; max num secs to wait b4 SIGKILL (default 10)
user=root                                                                         ; setuid to this UNIX account to run the program
redirect_stderr=true                                                              ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-controller-manager/controller.stdout.log  ; stderr log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB                                                      ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4                                                          ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB                                                       ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false                                                       ; emit events on stdout writes (default false)

supervisorctl update


/opt/kubernetes/server/bin/kube-scheduler.sh
#!/bin/sh
./kube-scheduler \
  --leader-elect  \
  --log-dir /data/logs/kubernetes/kube-scheduler \
  --master http://127.0.0.1:8080 \     ## 找本机的apiserver， 可以走http，不需要证书。
  --v 2

chmod +x /opt/kubernetes/server/bin/kube-scheduler.sh
mkdir -p /data/logs/kubernetes/kube-scheduler

/etc/supervisord.d/kube-scheduler.ini

[program:kube-scheduler-7-21]
command=/opt/kubernetes/server/bin/kube-scheduler.sh                     ; the program (relative uses PATH, can take args)
numprocs=1                                                               ; number of processes copies to start (def 1)
directory=/opt/kubernetes/server/bin                                     ; directory to cwd to before exec (def no cwd)
autostart=true                                                           ; start at supervisord start (default: true)
autorestart=true                                                         ; retstart at unexpected quit (default: true)
startsecs=30                                                             ; number of secs prog must stay running (def. 1)
startretries=3                                                           ; max # of serial start failures (default 3)
exitcodes=0,2                                                            ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT                                                          ; signal used to kill process (default TERM)
stopwaitsecs=10                                                          ; max num secs to wait b4 SIGKILL (default 10)
user=root                                                                ; setuid to this UNIX account to run the program
redirect_stderr=true                                                     ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-scheduler/scheduler.stdout.log ; stderr log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB                                             ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4                                                 ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB                                              ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false                                              ; emit events on stdout writes (default false)


# ln -s /opt/kubernetes/server/bin/kubectl /usr/bin/kubectl

# kubectl get cs
NAME                 STATUS    MESSAGE              ERROR
controller-manager   Healthy   ok                   
scheduler            Healthy   ok                   
etcd-1               Healthy   {"health": "true"}   
etcd-0               Healthy   {"health": "true"}   
etcd-2               Healthy   {"health": "true"}

部署kubelet

# ln -s /opt/kubernetes/server/bin/kubectl /usr/bin/kubectl

# kubectl get cs
NAME                 STATUS    MESSAGE              ERROR
controller-manager   Healthy   ok                   
scheduler            Healthy   ok                   
etcd-1               Healthy   {"health": "true"}   
etcd-0               Healthy   {"health": "true"}   
etcd-2               Healthy   {"health": "true"} 

# vi kubelet-csr.json
i{
    "CN": "k8s-kubelet",
    "hosts": [
    "127.0.0.1",
    "10.4.7.10",
    "10.4.7.21",
    "10.4.7.22",
    "10.4.7.23",
    "10.4.7.24",
    "10.4.7.25",
    "10.4.7.26",
    "10.4.7.27",
    "10.4.7.28"
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "ST": "beijing",
            "L": "beijing",
            "O": "od",
            "OU": "ops"
        }
    ]
}

# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server kubelet-csr.json | cfssl-json -bare kubelet

分发证书到7-21和7-22

conf]# kubectl config set-cluster myk8s \
  --certificate-authority=/opt/kubernetes/server/bin/cert/ca.pem \
  --embed-certs=true \
  --server=https://10.4.7.10:7443 \
  --kubeconfig=kubelet.kubeconfig

conf]# kubectl config set-credentials k8s-node \
  --client-certificate=/opt/kubernetes/server/bin/cert/client.pem \
  --client-key=/opt/kubernetes/server/bin/cert/client-key.pem \
  --embed-certs=true \
  --kubeconfig=kubelet.kubeconfig 

conf]# kubectl config set-context myk8s-context \
  --cluster=myk8s \
  --user=k8s-node \
  --kubeconfig=kubelet.kubeconfig
  
conf]# kubectl config use-context myk8s-context --kubeconfig=kubelet.kubeconfig

conf}# k8s-node.yaml

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: k8s-node
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:node
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: User
  name: k8s-node

conf]# kubectl create -f k8s-node.yaml

conf]# kubectl get clusterrolebinding k8s-node -o yaml

HDSS7-22上:
conf]# scp hdss7-21:/opt/kubernetes/server/bin/conf/kubelet.kubeconfig .

HDSS7-200上:
## kubulet 需要有一个pause基础镜像，将pod 的网络等初始化。
# docker pull kubernetes/pause
# docker tag f9d5de079539 harbor.od.com/public/pause:latest
# docker push harbor.od.com/public/pause:latest

vi /opt/kubernetes/server/bin/kubelet.sh
i#!/bin/sh
./kubelet \
  --anonymous-auth=false \
  --cgroup-driver systemd \
  --cluster-dns 192.168.0.2 \
  --cluster-domain cluster.local \
  --runtime-cgroups=/systemd/system.slice \
  --kubelet-cgroups=/systemd/system.slice \
  --fail-swap-on="false" \
  --client-ca-file ./cert/ca.pem \
  --tls-cert-file ./cert/kubelet.pem \
  --tls-private-key-file ./cert/kubelet-key.pem \
  --hostname-override hdss7-21.host.com \
  --image-gc-high-threshold 20 \
  --image-gc-low-threshold 10 \
  --kubeconfig ./conf/kubelet.kubeconfig \
  --log-dir /data/logs/kubernetes/kube-kubelet \
  --pod-infra-container-image harbor.od.com/public/pause:latest \
  --root-dir /data/kubelet
  
 mkdir -p /data/logs/kubernetes/kube-kubelet /data/kubelet
 chmod +x kubelet.sh

vi /etc/supervisord.d/kube-kubelet.ini
i[program:kube-kubelet-7-21]
command=/opt/kubernetes/server/bin/kubelet.sh     ; the program (relative uses PATH, can take args)
numprocs=1                                        ; number of processes copies to start (def 1)
directory=/opt/kubernetes/server/bin              ; directory to cwd to before exec (def no cwd)
autostart=true                                    ; start at supervisord start (default: true)
autorestart=true              		          ; retstart at unexpected quit (default: true)
startsecs=30                                      ; number of secs prog must stay running (def. 1)
startretries=3                                    ; max # of serial start failures (default 3)
exitcodes=0,2                                     ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT                                   ; signal used to kill process (default TERM)
stopwaitsecs=10                                   ; max num secs to wait b4 SIGKILL (default 10)
user=root                                         ; setuid to this UNIX account to run the program
redirect_stderr=true                              ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-kubelet/kubelet.stdout.log   ; stderr log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB                      ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4                          ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB                       ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false                       ; emit events on stdout writes (default false)

# supervisorctl update

# kubectl get nodes
NAME                STATUS   ROLES    AGE   VERSION
hdss7-21.host.com   Ready    <none>   53s   v1.15.2
hdss7-22.host.com   Ready    <none>   59s   v1.15.2

# kubectl label node hdss7-21.host.com node-role.kubernetes.io/node=
kubectl get nodes
NAME                STATUS   ROLES         AGE     VERSION
hdss7-21.host.com   Ready    master,node   2m35s   v1.15.2
hdss7-22.host.com   Ready    master,node   2m41s   v1.15.2

部署kube-proxy

# 连接pod 网络 和 集群网络
# vi kube-proxy-csr.json
i{
    "CN": "system:kube-proxy",  ## 直接签成k8s里 角色的名称
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "ST": "beijing",
            "L": "beijing",
            "O": "od",
            "OU": "ops"
        }
    ]
}

# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=client kube-proxy-csr.json |cfssl-json -bare kube-proxy-client

分发证书,略

conf]# kubectl config set-cluster myk8s \
  --certificate-authority=/opt/kubernetes/server/bin/cert/ca.pem \
  --embed-certs=true \
  --server=https://10.4.7.10:7443 \
  --kubeconfig=kube-proxy.kubeconfig
  
conf]# kubectl config set-credentials kube-proxy \
  --client-certificate=/opt/kubernetes/server/bin/cert/kube-proxy-client.pem \
  --client-key=/opt/kubernetes/server/bin/cert/kube-proxy-client-key.pem \
  --embed-certs=true \
  --kubeconfig=kube-proxy.kubeconfig
  
conf]# kubectl config set-context myk8s-context \
  --cluster=myk8s \
  --user=kube-proxy \
  --kubeconfig=kube-proxy.kubeconfig
  
conf]# kubectl config use-context myk8s-context --kubeconfig=kube-proxy.kubeconfig

lsmod | grep ip_vs

## 创建启动脚本之前，需要加在ipvs模块
#!/bin/bash
ipvs_mods_dir="/usr/lib/modules/$(uname -r)/kernel/net/netfilter/ipvs"
for i in $(ls $ipvs_mods_dir|grep -o "^[^.]*")
do
  /sbin/modinfo -F filename $i &>/dev/null
  if [ $? -eq 0 ];then
    /sbin/modprobe $i
  fi
done

vi /opt/kubernetes/server/bin/kube-proxy.sh
i#!/bin/sh
./kube-proxy \
  --cluster-cidr 172.7.0.0/16 \
  --hostname-override hdss7-21.host.com \
  --proxy-mode=ipvs \
  --ipvs-scheduler=nq \
  --kubeconfig ./conf/kube-proxy.kubeconfig
  
chmod +x /opt/kubernetes/server/bin/kube-proxy.sh
mkdir -p /data/logs/kubernetes/kube-proxy

vi /etc/supervisord.d/kube-proxy.ini
i[program:kube-proxy-7-21]
command=/opt/kubernetes/server/bin/kube-proxy.sh                     ; the program (relative uses PATH, can take args)
numprocs=1                                                           ; number of processes copies to start (def 1)
directory=/opt/kubernetes/server/bin                                 ; directory to cwd to before exec (def no cwd)
autostart=true                                                       ; start at supervisord start (default: true)
autorestart=true                                                     ; retstart at unexpected quit (default: true)
startsecs=30                                                         ; number of secs prog must stay running (def. 1)
startretries=3                                                       ; max # of serial start failures (default 3)
exitcodes=0,2                                                        ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT                                                      ; signal used to kill process (default TERM)
stopwaitsecs=10                                                      ; max num secs to wait b4 SIGKILL (default 10)
user=root                                                            ; setuid to this UNIX account to run the program
redirect_stderr=true                                                 ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-proxy/proxy.stdout.log     ; stderr log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB                                         ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4                                             ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB                                          ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false                                          ; emit events on stdout writes (default false)

# supervisorctl update

yum install ipvsadm -y
# ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.0.1:443 nq
  -> 10.4.7.21:6443               Masq    1      0          0         
  -> 10.4.7.22:6443               Masq    1      0          0  

# 验证k8s集群，在任意一个运算节点，创建一个资源配置清单
vi /root/nginx-ds.yaml
iapiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: nginx-ds
spec: 
  template:
    metadata:
      labels:
        app: nginx-ds
    spec:
      containers:
      - name: my-nginx
        image: harbor.od.com/public/nginx:v1.7.9
        ports:
        - containerPort: 80
	 	
# kubectl create -f nginx-ds.yaml 
daemonset.extensions/nginx-ds created

[root@hdss-22 ~]# kubectl get pods -o wide        
NAME             READY   STATUS    RESTARTS   AGE   IP           NODE               NOMINATED NODE   READINESS GATES
nginx-ds-56g8v   1/1     Running   0          65s   172.7.22.2   hdss-22.host.com   <none>           <none>
nginx-ds-7jdk6   1/1     Running   0          65s   172.7.21.2   hdss-21.host.com   <none>           <none>

[root@hdss7-22 bin]# kubectl get cs
NAME                 STATUS    MESSAGE              ERROR
scheduler            Healthy   ok                   
etcd-1               Healthy   {"health": "true"}   
etcd-2               Healthy   {"health": "true"}   
etcd-0               Healthy   {"health": "true"}   
controller-manager   Healthy   ok                   
[root@hdss7-22 bin]# kubectl get node
NAME                STATUS   ROLES         AGE   VERSION
hdss7-21.host.com   Ready    master,node   35m   v1.15.2
hdss7-22.host.com   Ready    master,node   35m   v1.15.2
[root@hdss7-22 bin]# kubectl get pods 
NAME             READY   STATUS    RESTARTS   AGE
nginx-ds-qz7nk   1/1     Running   0          113s
nginx-ds-rvplm   1/1     Running   0          113s

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