Mariadb/MySQL生产环境的my.cnf配置示例

　　　　　　　Mariadb/MySQL生产环境的my.cnf配置示例

　　　　　　　　　　　　　　　　　　　　　　　　　　　作者：尹正杰

一.针对MySQL主程序mysqld定义参数[mysqld]

1>.skip-networking=1

　　关闭网络连接，只侦听本地客户端， 所有和服务器的交互都通过一个socket实现，socket的配置存放在"/var/lib/mysql/mysql.sock",可在/etc/my.cnf修改

[root@node102.yinzhengjie.org.cn ~]# ss -ntl
State       Recv-Q Send-Q                           Local Address:Port                                          Peer Address:Port              
LISTEN      0      50                                           *:3306                                                     *:*                  
LISTEN      0      128                                          *:22                                                       *:*                  
LISTEN      0      128                                         :::22                                                      :::*                  
[root@node102.yinzhengjie.org.cn ~]# 
[root@node102.yinzhengjie.org.cn ~]# grep -v ^# /etc/my.cnf　　#关闭网络，将"skip-networking"的Value设置为1即可。　　　　
[mysqld]
skip-networking　　　　#关闭网络，此处我们只需要把该属性写在这里就表示启用了，除非你显示指定其值为0(表示不启用),如果我们这样写默认是启用了
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
symbolic-links=0

[mysqld_safe]
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid

!includedir /etc/my.cnf.d

[root@node102.yinzhengjie.org.cn ~]# 
[root@node102.yinzhengjie.org.cn ~]# systemctl restart mariadb　　　　　　#重启服务，发现MySQL服务在正常运行但是并未对外暴漏端口。
[root@node102.yinzhengjie.org.cn ~]# 
[root@node102.yinzhengjie.org.cn ~]# ps aux | grep mysql | grep -v grep　　#MySQL服务处于正常运行状态
root 8556 0.0 0.1 234060 4184 pts/0 S+ 07:50 0:00 mysql
mysql 10132 0.0 0.0 113308 1624 ? Ss 10:38 0:00 /bin/sh /usr/bin/mysqld_safe --basedir=/usr
mysql 10306 0.0 2.0 968688 81204 ? Sl 10:38 0:00 /usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/li
b64/mysql/plugin --log-error=/var/log/mariadb/mariadb.log --pid-file=/var/run/mariadb/mariadb.pid --socket=/var/lib/mysql/mysql.sockroot     10342 0.0 0.1 234060 4180 pts/1 S+ 10:38 0:00 mysql -uroot -px xxxxxxxxx
[root@node102.yinzhengjie.org.cn ~]#
[root@node102.yinzhengjie.org.cn ~]# ss -ntl
State       Recv-Q Send-Q                           Local Address:Port                                          Peer Address:Port              
LISTEN      0      128                                          *:22                                                       *:*                  
LISTEN      0      128                                         :::22                                                      :::*                  
[root@node102.yinzhengjie.org.cn ~]# 
[root@node102.yinzhengjie.org.cn ~]# mysql -uroot -pyinzhengjie               #本机基于socket文件依旧是可以正常访问的哟~
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 2
Server version: 5.5.64-MariaDB MariaDB Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> status
--------------
mysql  Ver 15.1 Distrib 5.5.64-MariaDB, for Linux (x86_64) using readline 5.1

Connection id:        2
Current database:    
Current user:        root@localhost
SSL:            Not in use
Current pager:        stdout
Using outfile:        ''
Using delimiter:    ;
Server:            MariaDB
Server version:        5.5.64-MariaDB MariaDB Server
Protocol version:    10
Connection:        Localhost via UNIX socket
Server characterset:    latin1
Db     characterset:    latin1
Client characterset:    utf8
Conn.  characterset:    utf8
UNIX socket:        /var/lib/mysql/mysql.sock
Uptime:            19 sec

Threads: 1  Questions: 4  Slow queries: 0  Opens: 0  Flush tables: 2  Open tables: 26  Queries per second avg: 0.210
--------------

MariaDB [(none)]>

[root@node102.yinzhengjie.org.cn ~]# grep -v ^# /etc/my.cnf　　#关闭网络，将"skip-networking"的Value设置为1即可。(一般用于维护数据库使用)