centos7下mysql不区分大小写配置以及启停命令

桃扇骨 2023-07-09 12:25 25阅读 0赞

> 明确表名以及字段名是否区分大小写，对于开发人员来说非常重要。mysql的配置，我个人习惯于不区分大小写。原因是mysql默认在linux环境下区分表名的大小写，不区分列名的大小写，在windows环境下不区分大小写，这非常容易混淆。以下说明在centos 7下mysql不区分大小写的设置

## 1、不区分大小写设置 ##

用root帐号登录后，在/etc/my.cnf 中的\[mysqld\]后添加添加lower\_case\_table\_names=1，重启MYSQL服务，这时已设置成功：不区分表名的大小写；  
lower\_case\_table\_names参数详解：  
lower\_case\_table\_names = 0  
其中 0：区分大小写，1：不区分大小写  
vim操作命令不熟悉的请参考：[vim操作命令][vim]

## 2、启动、关闭、重启、查看mysql服务 ##

1.  启动命令：

[root@xufeng Desktop]# service mysqld start
    Redirecting to /bin/systemctl start  mysqld.service

1.  关闭命令

[root@xufeng ~]# service mysqld stop
    Redirecting to /bin/systemctl stop  mysqld.service

1.  重启命令

[root@xufeng ~]# service mysqld restart
    Redirecting to /bin/systemctl restart  mysqld.service

1.  查看命令

[root@xufeng ~]# service mysqld status
    Redirecting to /bin/systemctl status  mysqld.service
    ● mysqld.service - MySQL Server
       Loaded: loaded (/usr/lib/systemd/system/mysqld.service; disabled; vendor preset: disabled)
       Active: active (running) since Wed 2018-07-18 22:34:06 EDT; 1min 11s ago
         Docs: man:mysqld(8)
               http://dev.mysql.com/doc/refman/en/using-systemd.html
      Process: 4366 ExecStart=/usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid $MYSQLD_OPTS (code=exited, status=0/SUCCESS)
      Process: 4345 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
     Main PID: 4370 (mysqld)
       CGroup: /system.slice/mysqld.service
               └─4370 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid
     
    Jul 18 22:34:04 xufeng.goertek.com systemd[1]: Starting MySQL Server...
    Jul 18 22:34:06 xufeng.goertek.com systemd[1]: Started MySQL Server.

5.查看mysql系统配置

[root@xufeng ~]# cat /etc/my.cnf
    # For advice on how to change settings please see
    # http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
     
    [mysqld]
    #
    # Remove leading # and set to the amount of RAM for the most important data
    # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
    # innodb_buffer_pool_size = 128M
    #
    # Remove leading # to turn on a very important data integrity option: logging
    # changes to the binary log between backups.
    # log_bin
    #
    # Remove leading # to set options mainly useful for reporting servers.
    # The server defaults are faster for transactions and fast SELECTs.
    # Adjust sizes as needed, experiment to find the optimal values.
    # join_buffer_size = 128M
    # sort_buffer_size = 2M
    # read_rnd_buffer_size = 2M
    datadir=/var/lib/mysql
    socket=/var/lib/mysql/mysql.sock
     
    # Disabling symbolic-links is recommended to prevent assorted security risks
    symbolic-links=0
     
    log-error=/var/log/mysqld.log
    pid-file=/var/run/mysqld/mysqld.pid

说明：上述mysql命令多转自以下站点，学习使用，侵删  
https://blog.csdn.net/xufengzhu/article/details/81110982

[vim]: https://blog.csdn.net/dear_little_bear/article/details/96640115