启动MYSQL时发现报错的解决方法

　　启动MYSQL时发现报错 Starting MySQL. ERROR! Manager of pid-file quit without updating file

　　尝试方法一：

　　打开/etc/selinux/config，把SELINUX=enforcing改为SELINUX=disabled后存盘退出重启机器试试

　　尝试方法二：

　　确实一般都是my.cnf配置文件的问题

　　/etc/my.cnf来自以下文件：

　　如果你的内存≤64M，则复制/usr/local/share/mysql/my-small.cnf为/etc/my.cnf

　　# This is for a system with little memory (<= 64M) where MySQL is only used

　　# from time to time and it's important that the mysqld daemon

　　# doesn't use much resources.

　　如果内存是128M，则复制/usr/local/share/mysql/my-medium.cnf为/etc/my.cnf

　　# This is for a system with little memory (32M - 64M) where MySQL plays

　　# an important part, or systems up to 128M where MySQL is used together with

　　# other programs (such as a web server)

　　如果内存是512M，则复制/usr/local/share/mysql/my-large.cnf为/etc/my.cnf

　　# This is for a large system with memory = 512M where the system runs mainly

　　# MySQL.

　　如果内存是1-2G，则复制/usr/local/share/mysql/my-huge.cnf为/etc/my.cnf

　　# This is for a large system with memory of 1G-2G where the system runs mainly

　　# MySQL.

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