docker服务离线安装

一、基础环境

1、操作系统：CentOS 7.3

2、Docker版本：19.03.2 官方下载地址（打不开可能需要科学上网） https://download.docker.com/linux/static/stable/x86_64/

二、Docker安装 1、解压

[root@localhost ~]# tar -xvf docker-19.03.2.tgz

2、将解压出来的docker文件内容移动到 /usr/bin/ 目录下

[root@localhost ~]# cp docker/* /usr/bin/

3、将docker注册为service

[root@localhost ~]# 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
# 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 
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

4、启动

添加文件权限并启动docker

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

systemctl daemon-reload         #重新加载配置文件   
systemctl start docker			#启动Docker
systemctl enable docker.service			#设置开机自启

5、验证

systemctl status docker			#查看Docker状态
docker -v			#查看Docker版本