我已经尝试了几个小时，但找不到问题所在。
vim /etc/mysql/my.cnf
>
!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/
[mysqld]
port=3444
[client]
user=root
password=test123
port=3444
下一个文件：
vim /etc/mysql/mysql.conf.d/mysqld.cnf
>
[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0
[mysqld]
#
# * Basic Settings
#
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3444
basedir = /usr
datadir = /var/lib/mysql
tmpdir = /tmp
lc-messages-dir = /usr/share/mysql
skip-external-locking
# bind-address = 127.0.0.1
然后我重新启动：
systemctl restart mysql.service
但在 mysql 控制台中，我仍然看到此信息。systemctl status mysql
mysql> show variables like '%port%';
+--------------------------+-------+
| Variable_name | Value |
+--------------------------+-------+
| innodb_support_xa | ON |
| large_files_support | ON |
| port | 3306 |
| report_host | |
| report_password | |
| report_port | 3306 |
| report_user | |
| require_secure_transport | OFF |
+--------------------------+-------+
8 rows in set (0.00 sec)