下载docker
docker官网地址
https://download.docker.com/linux/static/stable/x86_64/
打开官网地址后选中需要下载的版本右键保存链接
右键保存链接再在Linux服务器的/tmp目录上运行
wget https://download.docker.com/linux/static/stable/x86_64/docker-20.10.9.tgz
下载后解压
tar -zxvf docker-20.10.9.tgz
解压的docker文件夹全部移动至/usr/bin目录
# cp -p docker/* /usr/bin
将docker注册为系统服务
# vi /usr/lib/systemd/system/docker.service
[Unit]
Description=Docker Application Container Engine
Documentation=http://docs.docker.com
After=network.target docker.socket
[Service]
Type=notify
EnvironmentFile=-/run/flannel/docker
WorkingDirectory=/usr/local/bin
ExecStart=/usr/bin/dockerd \
-H tcp://0.0.0.0:4243 \
-H unix:///var/run/docker.sock \
--selinux-enabled=false \
--log-opt max-size=1g \
–graph /data/docker **# 更改docker默认目录，哪个磁盘大放哪个目录下**
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=on-failure
[Install]
WantedBy=multi-user.target
重启docker
systemctl daemon-reload
systemctl start docker
systemctl enable docker
查看docker版本
docker version
