I had a Nagios 3.05 install working about a week or two ago, but since then, I can not get nagios to start. I am running 3.0.6 on Mac OS X Server v10.5.6.
The messages I am seeing in the nagios.log is the following:
 Finished daemonizing... (New PID=8638)
 Error: Could not create external command file '/opt/local/var/nagios/rw/nagios.cmd' as named pipe: (22) -> Invalid argument. If this file already exists and you are sure that another copy of Nagios is not running, you should delete this file.
 Bailing out due to errors encountered while trying to initialize the external command file... (PID=8638)
I’ve tried deleting the nagios.cmd file and making sure the permissions are correct on the file but no such luck.
Anyone have any ideas on things to try?