Mysql [ERROR] /usr/sbin/mysqld: Can't create/write to file '/xxx/mysqld/mysql.pid&am

找到

/etc/rc.d/init.d/mysqld

打开mysqld
找到这行

get_mysql_option mysqld_safe pid-file "/xxx/xxx/mysql/mysqld.pid"

把这个

"/xxx/xxx/mysql/mysqld.pid"

转移到一个有权限的目录
再启动 即可