1.下载docker二进制安装包

下载地址>> https://download.docker.com/linux/static/stable/x86_64/

2. 解压安装包

tar zxf docker-19.03.9.tgz

3. 复制二进制文件到/usr/bin目录下

cp docker/*  /usr/bin

4. 编写docker启动脚本

vim /usr/lib/systemd/system/docker.service 

脚本内容为

[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

5. 启动docker并设为开机自启

systemctl daemon-reload

systemctl start docker

systemctl enable docker

6. 配置镜像加速

vim /etc/docker/daemon.json 

文件内容为：

{
  "registry-mirrors": ["https://q3u0qv3z.mirror.aliyuncs.com"],
   "insecure-registries":["192.168.189.171"]
}

7. 开启内核转发

开启

echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf

使修改生效

sysctl -p

8. 配置镜像加速之后重启docker

systemctl restart docker