/usr/sbin/mysqld: Can't find file: './mysql/plugin.frm' (errno: 13 - Permission denied)
2017-04-20 21:01:43 20164 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create
Starting MySQL (Percona Server). ERROR! The server quit without updating PID file
rm: cannot remove `/var/lib/mysql/SERVERNAME.pid': Permission denied
ERROR! The server quit without updating PID file (/var/lib/SERVERNAME.pid).
Check your log file to see what errors MySQL is generating during the start up process.
You can turn it off like this:
echo 0 >/selinux/enforce
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