mysql启动失败：不能创建pid文件

2016-03-09T07:51:38.905444Z 0 [ERROR] /usr/sbin/mysqld: Can't create/write to file '/var/run/mysqld/mysqld.pid' (Errcode: 2 - No such file or directory)
2016-03-09T07:51:38.905481Z 0 [ERROR] Can't start server: can't create PID file: No such file or directory
2016-03-09T07:51:38.931861Z mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended

/var/run/mysqld/mysqld.pid这个文件路径是在“/etc/init.d/mysqld”中配置的

解决：

1、创建文件

cd /var/run

mkdir mysqld

cd mysqld

touch mysqld.pid

sync

 

2、修改 /var/run/mysqld/权限为mysql 

chown -R mysql /var/run/mysqld

chgrp -R mysql /var/run/mysqld

chmod 777 /var/run/mysqld

 

再次重启，成功。