centos 7 设置 docker 开机自启服务

[root@localhost init.d]# systemctl list-unit-files # 查看开机自启项列表
UNIT FILE                                     STATE   
proc-sys-fs-binfmt_misc.automount             static  
dev-hugepages.mount                           static  
dev-mqueue.mount                              static  
proc-sys-fs-binfmt_misc.mount                 static  
run-vmblock\x2dfuse.mount                     disabled
sys-fs-fuse-connections.mount                 static  
...
[root@localhost init.d]# systemctl list-unit-files | grep docker # 查询状态筛选服务
docker.service                                disabled
docker.socket                                 disabled
[root@localhost init.d]# systemctl enable docker # 设置docker服务开机启动
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
[root@localhost init.d]# systemctl list-unit-files | grep docker
docker.service                                enabled 
docker.socket                                 disabled
[root@localhost init.d]# init 6 # 重启系统
Connection closing...Socket close.

Connection closed by foreign host.

Disconnected from remote host(192.168.1.100) at 18:21:48.
[root@localhost ~]#  systemctl status docker # 查看 docker 状态
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
   Active: active (running) since 二 2022-10-04 18:22:16 CST; 53s ago
     Docs: https://docs.docker.com
 Main PID: 1319 (dockerd)
    Tasks: 11
   Memory: 96.2M
   CGroup: /system.slice/docker.service
           └─1319 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

10月 04 18:22:15 localhost.localdomain dockerd[1319]: time="2022-10-04T18:22:15.702633344..."
10月 04 18:22:15 localhost.localdomain dockerd[1319]: time="2022-10-04T18:22:15.745525782..."
10月 04 18:22:16 localhost.localdomain dockerd[1319]: time="2022-10-04T18:22:16.055185788..."
10月 04 18:22:16 localhost.localdomain dockerd[1319]: time="2022-10-04T18:22:16.203268252..."
10月 04 18:22:16 localhost.localdomain dockerd[1319]: time="2022-10-04T18:22:16.291487816..."
10月 04 18:22:16 localhost.localdomain dockerd[1319]: time="2022-10-04T18:22:16.378593826..."
10月 04 18:22:16 localhost.localdomain dockerd[1319]: time="2022-10-04T18:22:16.441026971...8
10月 04 18:22:16 localhost.localdomain dockerd[1319]: time="2022-10-04T18:22:16.441153515..."
10月 04 18:22:16 localhost.localdomain systemd[1]: Started Docker Application Container ...e.
10月 04 18:22:16 localhost.localdomain dockerd[1319]: time="2022-10-04T18:22:16.461010934..."
Hint: Some lines were ellipsized, use -l to show in full.
[root@localhost ~]# 

参数描述：

• UNIT FILE : 服务名称
• STATE : 状态
  • enabled : 开机启动
  • disabled : 开机不启动

参考文档

centos7中设置服务开机自启的两种方法 - 简书 (jianshu.com)