I've encountered a critical error in Nagios 1.2. I'm using Nagios to monitor MySQL server, but however Nagios gives me a critical error stating --
Access denied for user: 'nagios@localhost' (Using password: YES)
I've tried following the steps as described in arthur.ath.cx/doc/nagios-mysql/README.mysql, but I still can't seem to fix it. Any advice will be greatly appreciated.