MySQL pid ended (cannot start mysql)

Question

I have a clean install of MySQL (mysql-5.5.24-osx10.6-x86_64). I am on Lion (OS 10.7.4) with a Mac Pro Quad Core. I installed MySQL the GUI installer and also installed the

Answer 1

120515 18:13:01 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.

• Regarding this error, I assume that you have specified a datadir in my.cnf. If you are using a non-default data directory for MySQL, you need to move folders mysql and performance_schema (whichever exists) to the data directory specified in my.cnf. You can find these folders in mysql directory.

In MySQL 5.5+ the --skip-locking option is removed. Use --skip-external-locking instead. Refer to MySQL documentation --> http://dev.mysql.com/doc/refman/5.5/en/mysql-nutshell.html Quote: "The --enable-locking and --skip-locking server options (use --external-locking and --skip-external-locking)."