Linux – MySQL and MariaDB pid-file folder issues – how to fix

Linux – MySQL and MariaDB pid-file folder issues – how to fix

https://serverfault.com/questions/480889/mysql-server-pid-file-could-not-be-found

https://www.hyperois.com/members/index.php/knowledgebase/40/How-to-solve-MySQL-is-running-but-PID-file-could-not-be-found.html

https://mariadb.com/kb/en/innodb-recovery-modes/

https://mariadb.com/kb/en/innodb-system-variables/#innodb_corrupt_table_action

http://blackbird.si/mysql-corrupted-innodb-tables-recovery-step-by-step-guide/