We can do a few advanced tricks with Check_MK that do diagnosis and detection of typical OS issues, i.e. in the first example we check RHEL systems for hangs at netfs startup. I.e. when a _netdev filesystem has crashed into FSCK.
These are examples, the syntax may be wrong and the regex will be wrong.
add in-tie a number retries to allow for a normal delay of FS activation
2 minutes should be safe.
add a local check that verifies /var/lock/subsys/local has been created and one that checks your runlevel.