OpsMgr–”Not Monitored” agent (#SCOM, #SYSCTR)

There are a variety of different reasons which can cause an agent to appear as “Not Monitored”. We were debugging some of these on a client site, and ran through potential issues such as these: DNS issues: http://thoughtsonopsmgr.blogspot.com/2009/10/opsmgr-agent-stays-in-not-monitored.html  Agent configuration incorrect: https://www.catapultsystems.com/cfuller/archive/2010/01/25/not-monitored-servers-in-opsmgr.aspx Agent XML file: http://www.brighthub.com/hubfolio/tolga-balci/articles/87174.aspx  Various issues: http://blogs.technet.com/b/momteam/archive/2008/03/10/getting-headaches-trying-to-figure-out-why-you-are-seeing-the-not-monitored-state-for-management-servers-or-agents.aspx We had been debugging the “Not…