查看本地服务器MYSQL的端口号

进入mysql后，输入命令：show global variables like 'port'; 

具体如下:

~$ mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 10
Server version: 5.7.20-0ubuntu0.16.04.1 (Ubuntu)

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owners.

mysql> show global variables like 'port';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| port          | 3306  |
+---------------+-------+
1 row in set (0.02 sec)