安装

安装Docker
这里使用Docker作为容器引擎，也可以换成别的，例如containerd
下载地址：https://download.docker.com/linux/static/stable/x86_64/docker-20.10.9.tgz
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。
3.1 解压二进制包
tar zxvf docker-19.03.9.tgz
mv docker/* /usr/bin
3.2 systemd管理docker
cat > /usr/lib/systemd/system/docker.service << EOF
[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
EOF
3.3 创建配置文件
mkdir /etc/docker
cat > /etc/docker/daemon.json << EOF
{
  "registry-mirrors": [
    "https://zoyp43l9.mirror.aliyuncs.com",
    "https://registry.docker-cn.com",
    "http://hub-mirror.c.163.com",
    "https://docker.mirrors.ustc.edu.cn",
    "http://8.130.52.106:15000"
  ],
 "insecure-registries" : [
        "8.130.52.106:15000"
  ]
}
EOF
•registry-mirrors 阿里云镜像加速器
insecure-registries  http 需要信任
3.4 启动并设置开机启动
systemctl daemon-reload
systemctl start docker
systemctl enable docker