Docker 之MySQL 重启，提示Error response from daemon: driver failed programming external connectivity on **

今天刚刚修改基于Docker服务的MySQL配置参数，准备重新加载MySQL 容器，提示如下截图的错误信息：

[[email protected] ~]# docker restart 7d98a59a8012
Error response from daemon: Cannot restart container 7d98a59a8012: driver failed programming external connectivity on endpoint mysql-slave (b3c4eb9f64c026a64a04183e3d54053e87078e51a64224e7cef54af3910ab7cd):  (iptables failed: iptables --wait -t nat -A DOCKER -p tcp -d 0/0 --dport 3308 -j DNAT --to-destination 172.17.0.2:3306 ! -i docker0: iptables: No chain/target/match by that name.
 (exit status 1))

原因:Docker容器做端口映射报错，Docker服务启动时定义的自定义链DOCKER被MySQL容器重新启动指令产生冲突；需要重新启动Docker 服务和MySQL服务，构建自定义链DOCKER.

实例： 

[[email protected] ~]# docker start 1906ba6bfbe1
Error response from daemon: driver failed programming external connectivity on endpoint mysql-master (fa92e62ba50f267e1b44c499bf8318e8ddbf48705ae9b62771a15061afc8f340):  (iptables failed: iptables --wait -t nat -A DOCKER -p tcp -d 0/0 --dport 3307 -j DNAT --to-destination 172.17.0.2:3306 ! -i docker0: iptables: No chain/target/match by that name.
 (exit status 1))
Error: failed to start containers: 1906ba6bfbe1
[[email protected] ~]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
[[email protected] ~]# systemctl restart docker
[[email protected] ~]# docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                       PORTS               NAMES
7d98a59a8012        mysql:5.7           "docker-entrypoint.s…"   46 hours ago        Exited (128) 2 minutes ago                       mysql-slave
1906ba6bfbe1        mysql:5.7           "docker-entrypoint.s…"   46 hours ago        Exited (137) 8 minutes ago                       mysql-master
[[email protected] ~]# docker start 1906ba6bfbe1
1906ba6bfbe1
[[email protected] ~]# docker start 7d98a59a8012
7d98a59a8012
[[email protected] ~]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                               NAMES
7d98a59a8012        mysql:5.7           "docker-entrypoint.s…"   46 hours ago        Up 2 seconds        33060/tcp, 0.0.0.0:3308->3306/tcp   mysql-slave
1906ba6bfbe1        mysql:5.7           "docker-entrypoint.s…"   46 hours ago        Up 23 seconds       33060/tcp, 0.0.0.0:3307->3306/tcp   mysql-master