docker 启动报错,具体信息如下:

[root@iZwz96ddwhet5yr56ffxmlZ ~]# systemctl start docker
Failed to start docker.service: Unit is not loaded properly: Invalid argument.
See system logs and 'systemctl status docker.service' for details.
[root@iZwz96ddwhet5yr56ffxmlZ ~]# 
[root@iZwz96ddwhet5yr56ffxmlZ ~]# 
[root@iZwz96ddwhet5yr56ffxmlZ ~]# 
[root@iZwz96ddwhet5yr56ffxmlZ ~]# systemctl status docker.service
● docker.service
   Loaded: error (Reason: Invalid argument)
   Active: inactive (dead)

Sep 07 21:50:46 iZwz96ddwhet5yr56ffxmlZ systemd[1]: [/etc/systemd/system/docker.service:1] Assignment outside of section. Ignoring.
Sep 07 21:50:46 iZwz96ddwhet5yr56ffxmlZ systemd[1]: docker.service lacks both ExecStart= and ExecStop= setting. Refusing.
Sep 07 21:50:46 iZwz96ddwhet5yr56ffxmlZ systemd[1]: [/etc/systemd/system/docker.service:1] Assignment outside of section. Ignoring.
Sep 07 21:50:46 iZwz96ddwhet5yr56ffxmlZ systemd[1]: docker.service lacks both ExecStart= and ExecStop= setting. Refusing.
Sep 07 21:58:16 iZwz96ddwhet5yr56ffxmlZ systemd[1]: [/etc/systemd/system/docker.service:1] Assignment outside of section. Ignoring.
Sep 07 21:58:16 iZwz96ddwhet5yr56ffxmlZ systemd[1]: docker.service lacks both ExecStart= and ExecStop= setting. Refusing.
Sep 07 21:59:12 iZwz96ddwhet5yr56ffxmlZ systemd[1]: [/etc/systemd/system/docker.service:1] Assignment outside of section. Ignoring.
Sep 07 21:59:12 iZwz96ddwhet5yr56ffxmlZ systemd[1]: docker.service lacks both ExecStart= and ExecStop= setting. Refusing.
Sep 07 21:59:22 iZwz96ddwhet5yr56ffxmlZ systemd[1]: [/etc/systemd/system/docker.service:1] Assignment outside of section. Ignoring.
Sep 07 21:59:22 iZwz96ddwhet5yr56ffxmlZ systemd[1]: docker.service lacks both ExecStart= and ExecStop= setting. Refusing.

这个问题简直让人崩溃
我将docker卸载 重装 再启动 还是会报这个错 , 后面尝试删除了 上面提示出现的文件 /etc/systemd/system/docker.service 最后竟然解决了!

我的解决过程

  • 卸载 docker

  • 然后将文件 /etc/systemd/system/docker.service 删除.
    这个文件在上面报错信息中有出现,我看了下里面的内容好像是和docker swarm集群 service有关,没备份删了,所以这里没法贴出这个文件具体内容(抱着出错重装系统的心情)

  • 重新 安装docker

  • sudo systemctl start docker
    启动docker 成功了!

由于这个问题的出现不太清楚,不好复现,没法确定 : 不卸载docker 直接删除 /etc/systemd/system/docker.service 是否能够启动docker

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