二级制安装

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

vim /etc/systemd/system/docker.service

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

[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 -H fd:// --containerd=/run/containerd/containerd.sock
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always

# Note that StartLimit* options were moved from "Service" to "Unit" in systemd 229.
# Both the old, and new location are accepted by systemd 229 and up, so using the old location
# to make them work for either version of systemd.
StartLimitBurst=3

"/usr/lib/systemd/system/docker.service" 48L, 1701C                                               1,1           Top
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service containerd.service
Wants=network-online.target
Requires=docker.socket
Wants=containerd.service

[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 -H fd:// --containerd=/run/containerd/containerd.sock
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always

# Note that StartLimit* options were moved from "Service" to "Unit" in systemd 229.
# Both the old, and new location are accepted by systemd 229 and up, so using the old location
# to make them work for either version of systemd.
StartLimitBurst=3

# Note that StartLimitInterval was renamed to StartLimitIntervalSec in systemd 230.
# Both the old, and new name are accepted by systemd 230 and up, so using the old name to make
# this option work for either version of systemd.
StartLimitInterval=60s

# 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

# Comment TasksMax if your systemd version does not support it.
# Only systemd 226 and above support this option.
TasksMax=infinity

# 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
OOMScoreAdjust=-500

[Install]
WantedBy=multi-user.target

vim /etc/supervisor/conf.d/dockerd.conf

[program:dockerd]
# 设置命令在指定的目录内执行
directory=/opt/docker/
#例如，我们编译完以后的go程序名为：main 
command=/opt/docker/dockerd -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock  
user=root
# supervisor 启动时自动该应用
autostart=true
# 进程退出后自动重启进程
autorestart=true
# 进程持续运行多久才认为是启动成功
startsecs = 5
# 启动重试次数
startretries = 3
#指定日志目录（将原来在调试输出界面的内容统一写到指定文件）
stdout_logfile=/opt/docker/logs/out.log
stderr_logfile=/opt/docker/err.log

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

systemctl daemon-reload //重载systemd下 xxx.service文件 systemctl start docker //启动Docker systemctl enable docker.service //设置开机自启

更新 PATH 变量 echo 'PATH=/opt/k8s/bin:$PATH' >>/root/.bashrc source /root/.bashrc