JD wrote:
Hello List,

mysqld fails to start, and emits the following
error messages in /var/log/mysqld.log

090127 10:00:30 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
/usr/libexec/mysqld: Table 'mysql.plugin' doesn't exist
090127 10:00:30 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it. 090127 10:00:30 InnoDB: Operating system error number 13 in a file operation.
InnoDB: The error means mysqld does not have the access rights to
InnoDB: the directory.

That's most likely to be the real error. Or, at least, the most important one.

InnoDB: File name ./ibdata1
InnoDB: File operation call: 'open'.
InnoDB: Cannot continue operation.
090127 10:00:30 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended

So, I tried to run mysql_upgrade:
# mysql_upgrade
Looking for 'mysql' as: mysql
Looking for 'mysqlcheck' as: mysqlcheck
Running 'mysqlcheck'...
mysqlcheck: Got error: 2002: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) when trying to connect
FATAL ERROR: Upgrade failed

So, it seems like a chicken and egg thing???
Cannot run mysql_upgrade bcause the server is not running.
Cannot run the server because I must first run mysql_upgrade.

I think you're being misled by the fact that there are two errors: A missing table and a file system that mysqld doesn't have access to. Fix the file permissions first, and then try starting mysqld. You'll then be able to run mysql_upgrade to fix the missing table problem (which is a warning, not a fatal error, hence why you need to have the server running to be able to fix it).

Mark
--
http://www.good-stuff.co.uk - Stuff, some of it good

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