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Mysql daemon management using systemd | beneifts of sysetmd for mysqld

Why we should use systemd to manage mysql daemon:
  • systemd is the System Management Deamon. 
  • systemd provides standards for controlling the Linux boot process
  • systemd is intended to replace init start-up scripts for boot process, monitoring and automatic restarts in the event of a service failure/termination
  • Starting with MySQL 5.7.6, process monitoring and auto-restarts are now handled by systemd on systems that have it
  • If mysqld fails due to a restartable failure like a crash, then systemd automatically restarts mysqld
  • multiple services are able to start at same time, improving boot times
  • You can pass other custom options to mysqld by creating additional entries/lines in /etc/sysconfig/mysql using the MYSQLD_OPTS=”option” format
  • You can also specify custom options and environment variables using the systemctl command:
        $ systemctl set-environment MYSQLD_OPTS="--general_log=1"
        The custom options can also be unset using:
       $ systemctl unset-environment MYSQLD_OPTS
  • mysqld.service: This is the systemd service definition file that tells it what service to start, specifies auto-restart settings, type of service it is and all of the dependencies between various units, etc.
Ref.: https://mysqlserverteam.com/mysql-5-7-native-systemd-support/





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