docker下载地址

https://download.docker.com/linux/static/stable/x86_64/   下载安装

wget https://download.docker.com/linux/static/stable/x86_64/docker-19.03.6.tgz
tar -zvxf docker-19.03.6.tgz
cp docker/* /usr/bin/

 

直接运行

/usr/bin/dockerd

 

demon模式运行,并保存日志

nohup /usr/bin/dockerd >/docker.log 2>&1 &

 

systemctl运行

sudo vim /etc/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
TimeoutStartSec=0
Delegate=yes
KillMode=process
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s

[Install]
WantedBy=multi-user.target

 

设置权限权限为可执行

chmod +x /etc/systemd/system/docker.service

 

常用命令

systemctl daemon-reload   //重载配置文件
systemctl start docker    //启动Docker
systemctl stop docker    //关闭docker
systemctl restart  docker    //重启docker
systemctl enable docker.service   //设置开机自启
systemctl status docker    //查看Docker状态

 

很多时候在我们挂载磁盘后不想用docker默认目录 可 -g 修改目录 （docker 默认目录在/var/lib/docker下，包括 pull下来的镜像都在该目录下）

ExecStart修改为:

ExecStart=/usr/bin/dockerd -g /xiaobo/docker

 

修改后启动docker，路径已修改成功