mysql修改端口经验

最近使用RPM安装mysql,因为以前已安装过redmine,导致无法启动mysql,最后通过日志发现端口被占用。


MySQL日志文件一般在:/var/log/mysqld.log

mysql更改端口
修改/etc/my.cnf
添加port=3308
修改后如下

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
port=3308
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
default-character-set=utf8
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
然后重启mysql

如果你开启了selinux,mysql会无法启动,你会在日志中看到以下错误

[ERROR] Can't start server: Bind on TCP/IP port: Permission denied
[ERROR] Do you already have another mysqld server running on port: 3308

那么,你需要关掉selinux,不想重启服务器,而关掉selinux,使用以下命令

/usr/sbin/setenforce 0


修改linux下mysql端口时候报错:

Can't start server: Bind on TCP/IP port: Permission denied

需要修改: vi /etc/selinux/config

SELINUX=disabled

然后重启服务器即可


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