docker0: link is not ready docker_gwbridge: link is not ready 或者更簡(jiǎn)單的排查方法，直接手動(dòng)啟動(dòng) dockerd 看看。啟動(dòng)方法可以通過 grep ExecStart /usr/lib/systemd/system/docker.service 查看。
一般來說按如下執(zhí)行就行：
$ /usr/bin/dockerd --debug 然后能看到最后輸出：
INFO[2021-07-29T02:25:55.811673622Z] stopping event stream following graceful shutdown error="<nil>" module=libcontainerd namespace=moby failed to start daemon: Error initializing network controller: list bridge addresses failed: PredefinedLocalScopeDefaultNetworks List: [10.252.0.0/24 10.252.1.0/24 10.252.2.0/24]: no available network 這時(shí)候可以看下 ip addr，是否有 docker0 和 docker_gwbridge，
