kubernetes 1.20 二进制方式高可用部署之安装docker（3）

四 ，安装docker

4.1 下载并解压二进制包

以下在所有节点操作。这里采用二进制安装，用yum安装也一样
master1、node1、node2节点

[root@k8s-node1 ~]# wget https://download.docker.com/linux/static/stable/x86_64/docker-19.03.9.tgz
[root@k8s-node1 ~]# tar zxvf docker-19.03.9.tgz
[root@k8s-node1 ~]# mv docker/* /usr/bin

4.2 创建配置文件

master1、node1、node2节点

[root@k8s-node1 ~]# mkdir /etc/docker
[root@k8s-node1 ~]# vim /etc/docker/daemon.json
{
  "registry-mirrors": ["https://b9pmyelo.mirror.aliyuncs.com"]
}

4.3 systemd管理docker

master1、node1、node2节点

[root@k8s-node1 ~]# vim /usr/lib/systemd/system/docker.service
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target

[Service]
Type=notify
ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
TimeoutStartSec=0
Delegate=yes
KillMode=process
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s

[Install]
WantedBy=multi-user.target

#启动并设置开机启动
systemctl daemon-reload
systemctl enable docker
systemctl start docker

ps -aux |grep  docker|grep -v grep