Mysql : Communications link failure

1. # 进入mysql容器(mysqlName为 docker ps中显示的name！)
2. docker exec -it mysqlName bash

1 登录mysql
mysql -u root -p
输入密码
 
2 查看wait_timeou
show global variables like 'wait_timeout'; 
 
3 设置
set global wait_timeout=604800; 
set global interactive_timeout=604800;
 
4 重启mysql
docker-compose restart mysql;
# docker restart mysql;