kubernetes 二进制文件方式安装
Kubernetes在CentOS7下二进制文件方式安装、离线安装一、下载Kubernetes(简称K8S)二进制文件1)https://github.com/kubernetes/kubernetes/releases 从上边的网址中选择相应的版本,本文以1.9.1版本为例,从 CHANGELOG页面 下载二进制文件。2)组件选择:选择Service Binaries中的kubernetes-s
Kubernetes在CentOS7下二进制文件方式安装、离线安装
一、下载Kubernetes(简称K8S)二进制文件
1)https://github.com/kubernetes/kubernetes/releases
从上边的网址中选择相应的版本,本文以1.9.1版本为例,从 CHANGELOG页面 下载二进制文件。
2)组件选择:选择Service Binaries中的kubernetes-server-linux-amd64.tar.gz
该文件已经包含了 K8S所需要的全部组件,无需单独下载Client等组件。
二、安装规划
1)下载K8S解压,把每个组件依次复制到/usr/bin目录文件下,然后创建systemd服务文见,最后启动该组件
3) 本例:以三个节点为例。具体节点安装组件如下
节点IP地址 | 角色 | 安装组件名称 |
---|---|---|
192.168.137.3 | Master(管理节点) | etcd、kube-apiserver、kube-controller-manager、kube-scheduler |
192.168.137.4 | Node1(计算节点) | docker 、kubelet、kube-proxy |
192.168.137.5 | Node2(计算节点) | docker 、kubelet、kube-proxy |
其中etcd为K8S数据库
三、Master节点部署
注意:在CentOS7系统 以二进制文件部署,所有组件都需要4个步骤:
1)复制对应的二进制文件到/usr/bin目录下
2)创建systemd service启动服务文件
3)创建service 中对应的配置参数文件
4)将该应用加入到开机自启
1 etcd数据库安装
(1) ectd数据库安装
下载:K8S需要etcd作为数据库。以 v3.2.9为例,下载地址如下:
https://github.com/coreos/etcd/releases/
下载解压后将etcd、etcdctl二进制文件复制到/usr/bin目录
(2)设置 etcd.service服务文件
在/etc/systemd/system/目录里创建etcd.service,其内容如下:
[root@k8s-master]# cat /etc/systemd/system/etcd.service
[Unit]
Description=etcd.service
[Service]
Type=notify
TimeoutStartSec=0
Restart=always
WorkingDirectory=/var/lib/etcd
EnvironmentFile=-/etc/etcd/etcd.conf
ExecStart=/usr/bin/etcd
[Install]
WantedBy=multi-user.target
其中WorkingDirectory为etcd数据库目录,需要在etcd**安装前创建**
(3)创建配置/etc/etcd/etcd.conf文件
[root@k8s-master]# cat /etc/etcd/etcd.conf
ETCD_NAME=ETCD Server
ETCD_DATA_DIR="/var/lib/etcd/"
ETCD_LISTEN_CLIENT_URLS="http://0.0.0.0:2379"
ETCD_ADVERTISE_CLIENT_URLS="http://192.168.137.3:2379"
(4)配置开机启动
#systemctl daemon-reload
#systemctl enable etcd.service
#systemctl start etcd.service
(5)检验etcd是否安装成功
# etcdctl cluster-health
\member 8e9e05c52164694d is healthy: got healthy result from http://localhost:2379
2 kube-apiserver服务
(1)复制二进制文件到/usr/bin目录
将kube-apiserver、kube-controller-manger、kube-scheduler 三个可执行文件复制到/usr/bin目录
(2)新建并编辑/kube-apiserver.service 文件
[root@k8s-master]#cat /usr/lib/systemd/system/kube-apiserver.service
[Unit]
Description=Kubernetes API Server
After=etcd.service
Wants=etcd.service
[Service]
EnvironmentFile=/etc/kubernetes/apiserver
ExecStart=/usr/bin/kube-apiserver \
$KUBE_ETCD_SERVERS \
$KUBE_API_ADDRESS \
$KUBE_API_PORT \
$KUBE_SERVICE_ADDRESSES \
$KUBE_ADMISSION_CONTROL \
$KUBE_API_LOG \
$KUBE_API_ARGS
Restart=on-failure
Type=notify
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
3)新建参数配置文件/etc/kubernetes/apiserver
[root@k8s-master]#cat /etc/kubernetes/apiserver
KUBE_API_ADDRESS="--insecure-bind-address=0.0.0.0"
KUBE_API_PORT="--insecure-port=8080"
KUBE_ETCD_SERVERS="--etcd-servers=http://192.168.137.5:2379"
KUBE_SERVICE_ADDRESSES="--service-cluster-ip-range=169.169.0.0/16"
KUBE_ADMISSION_CONTROL="--admission-control=NamespaceLifecycle,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota"
KUBE_API_LOG="--logtostderr=false --log-dir=/home/k8s-t/log/kubernets --v=2"
KUBE_API_ARGS=" "
3 kube-controller-manger部署
(1)配置kube-controller-manager systemd 文件服务
命令内容如下:
[root@k8s-master]#cat /usr/lib/systemd/system/kube-controller-manager.service
[Unit]
Description=Kubernetes Scheduler
After=kube-apiserver.service
Requires=kube-apiserver.service
[Service]
EnvironmentFile=-/etc/kubernetes/controller-manager
ExecStart=/usr/bin/kube-controller-manager \
$KUBE_MASTER \
$KUBE_CONTROLLER_MANAGER_ARGS
Restart=on-failure
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
2)配置参数文件 /etc/kubernetes/controller-manager 内容如下:
[root@k8s-master]#cat /etc/kubernetes/controller-manager \
KUBE_MASTER="--master=http://192.168.137.5:8080"
KUBE_CONTROLLER_MANAGER_ARGS=" "
4 kube-scheduler组件部署
(1)配置kube-scheduler systemd服务文件
[root@k8s-master]#cat /usr/lib/systemd/system/kube-scheduler.service
[Unit]
Description=Kubernetes Scheduler
After=kube-apiserver.service
Requires=kube-apiserver.service
[Service]
User=root
EnvironmentFile=-/etc/kubernetes/scheduler
ExecStart=/usr/bin/kube-scheduler \
$KUBE_MASTER \
$KUBE_SCHEDULER_ARGS
Restart=on-failure
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
(2)配置/etc/kubernetes/scheduler参数文件
[root@k8s-master]#cat /etc/kubernetes/scheduler
KUBE_MASTER="--master=http://192.168.137.5:8080"
KUBE_SCHEDULER_ARGS="--logtostderr=true --log-dir=/home/k8s-t/log/kubernetes --v=2"
5 将各组件加入开机自启
(1)命令如下:
systemctl daemon-reload
systemctl enable kube-apiserver.service
systemctl start kube-apiserver.service
systemctl enable kube-controller-manager.service
systemctl start kube-controller-manager.service
systemctl enable kube-scheduler.service
systemctl start kube-scheduler.service
https://blog.csdn.net/chen798213337/article/details/78501042
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