删除旧的安装

yum remove docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-engine

安装所需的软件包

yum install -y yum-utils device-mapper-persistent-data lvm2

在线安装

配置阿里云源地址

yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

执行安装

yum install docker-ce docker-ce-cli containerd.io

离线安装

下载安装包

https://download.docker.com/linux/static/stable/x86_64/

解压及安装

tar -zxvf docker-20.10.14.tgz
cp docker/* /usr/bin/
vim docker.service

服务文件

[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target

[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd --selinux-enabled=false --insecure-registry=10.4.43.53
ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this version.
#TasksMax=infinity
TimeoutStartSec=0
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process
# restart the docker process if it exits prematurely
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s

[Install]
WantedBy=multi-user.target

安装

cp docker.service /etc/systemd/system/
chmod 777 /etc/systemd/system/docker.service
systemctl daemon-reload
service docker start

查看服务状态

service docker status

设置自动启动

systemctl enable docker.service

挂载Docker目录

service docker stop
mkdir /data/docker
mv /var/lib/docker/ /data/
ln -s /data/docker/ /var/lib/
ls -l /var/lib
service docker start