The startup programs are the programs that are used during MySQL start up and initiate the required background services based on the configuration.
- mysqld: This is the MySQL server daemon. All the other client programs interact with the database using this server program. It must be started and be running at all times except for maintenance.
- mysqld_safe: This is one of the server startup program scripts and attempts to start the mysqld program.
- mysql.server: Another server startup program script, which is used in those systems, uses V-style run directories containing scripts. It starts system services at particular run levels. It calls mysqld_safe to start the MySQL server.
- mysqld_multi: As the name suggests, this is a ...