场景
在做keepalived+docker容器mysql 高可用时，今天出现了如下问题，mysql容器无法重启，使用docker restart mysqlA提示如下
docker restart mysql_backup_serverb
Error response from daemon: Cannot restart container mysql_backup_serverb: failed to listen to abstract unix socket "/containerd-shim/moby/998d52ef32c4c407c0c26c4c02fca694ac8f3264698b35d06dd9cb52ff1fba6e/shim.sock": listen unix /containerd-shim/moby/998d52ef32c4c407c0c26c4c02fca694ac8f3264698b35d06dd9cb52ff1fba6e/shim.sock: bind: address already in use: unknown
Error response from daemon: Cannot restart container mysql_backup_serverb: failed to listen to abstract unix socket "/containerd-shim/moby/998d52ef32c4c407c0c26c4c02fca694ac8f3264698b35d06dd9cb52ff1fba6e/shim.sock": listen unix /containerd-shim/moby/998d52ef32c4c407c0c26c4c02fca694ac8f3264698b35d06dd9cb52ff1fba6e/shim.sock: bind: address already in use: unknown提示端口占用，因为是mysql 端口占用第一个想到的是3306被占用，但是通过netstat -lnp | grep 3306 没有信息
解决
先关闭keepalived 防止虚拟IP 在本机导致mysql无法正常使用，关闭keepalived 让虚拟IP漂移到可以用的宿主机上
systemctl stop keepalived
查看进程
netstat -lnp
发现
unix 2 [ ACC ] STREAM LISTENING 307644974 342442/docker-conta @/containerd-shim/moby/17a95dce2f49bf6a9760ec9b3c00b0aaeb12065c6bc5ebc850213e41df22ae62/shim.sock
很眼熟，跟报错的sock是一样的，而且可以知道了pid 是342442
再利用 kill 342442 杀死进程
重启 docker start mysqlA 就成功了。
最后启动keepalived
systemctl start keepalived
希望对大家有所帮助！！
