Docker部署 Mysql

docker run -p 3306:3306 --name mysql -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7

如果你的容器运行正常，但是无法访问到MySQL，一般有以下几个可能的原因：

防火墙阻拦

开放端口：

$ systemctl status firewalld
$ firewall-cmd  --zone=public --add-port=3306/tcp -permanent
$ firewall-cmd  --reload

关闭防火墙：

$ sudo systemctl stop firewalld
需要进入docker本地客户端设置远程访问账号

$ sudo docker exec -it mysql bash
$ mysql -uroot -p123456
mysql> grant all privileges on *.* to root@'%' identified by "password";

原理：mysql使用mysql数据库中的user表来管理权限，修改user表就可以修改权限（只有root账号可以修改）

mysql> use mysql;
Database changed

mysql> select host,user,password from user;
+--------------+------+-------------------------------------------+
| host                    | user      | password                                                                 |
+--------------+------+-------------------------------------------+
| localhost              | root     | *A731AEBFB621E354CD41BAF207D884A609E81F5E      |
| 192.168.1.1            | root     | *A731AEBFB621E354CD41BAF207D884A609E81F5E      |
+--------------+------+-------------------------------------------+
2 rows in set (0.00 sec)

mysql> grant all privileges  on *.* to root@'%' identified by "password";
Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> select host,user,password from user;
+--------------+------+-------------------------------------------+
| host                    | user      | password                                                                 |
+--------------+------+-------------------------------------------+
| localhost              | root      | *A731AEBFB621E354CD41BAF207D884A609E81F5E     |
| 192.168.1.1            | root      | *A731AEBFB621E354CD41BAF207D884A609E81F5E     |
| %                       | root      | *A731AEBFB621E354CD41BAF207D884A609E81F5E     |
+--------------+------+-------------------------------------------+
3 rows in set (0.00 sec)