The output returns OK status when run manually. It seems that the error occurs at random times, but as mentioned, will eventually go away. If the plugin is the issue, the error should be persistent. In my case, it happens from time to time. I only experienced this when we used Nagios 3.2.3, this never happened in Nagios v2.6 <div class="gmail_quote">On Mon, Jun 20, 2011 at 10:16 AM, Yueh-Hung Liu <<a href="mailto:yuehung.liu@gmail.com">yuehung.liu@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> nagios only accepts integers 0~3 as return codes of plugins. try to manually execute the command of the questioned service (be the user nagios runs as) and check the ouputs. <div><div></div><div class="h5"> On Mon, Jun 20, 2011 at 9:24 AM, Rai Ricafrente <<a href="mailto:maillist@ricafrente.com">maillist@ricafrente.com</a>> wrote: > Hi everyone, > > I just installed a fresh Nagios v3.2.3 with about 150 hosts and 600 > services. I just noticed from time to time, hosts are throwing out "Return > code of 141 is out of bounds" status every now and then, then it will > eventually go away. I don't know if this has anything to do with the plugin > since the status will return to OK state without intervention, which proves > that the check_icmp plugin works just fine. > > I'm confused with this error, and this one did not manifest itself when we > were using Nagios v2. Anyone has the same issue? > > Big thanks, > > Rai > </div></div>> ------------------------------------------------------------------------------ > EditLive Enterprise is the world's most technically advanced content > authoring tool. Experience the power of Track Changes, Inline Image > Editing and ensure content is compliant with Accessibility Checking. > <a href="http://p.sf.net/sfu/ephox-dev2dev" target="_blank">http://p.sf.net/sfu/ephox-dev2dev</a> > _______________________________________________ > Nagios-users mailing list > <a href="mailto:Nagios-users@lists.sourceforge.net">Nagios-users@lists.sourceforge.net</a> > <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users" target="_blank">https://lists.sourceforge.net/lists/listinfo/nagios-users</a> > ::: Please include Nagios version, plugin version (-v) and OS when reporting > any issue. > ::: Messages without supporting info will risk being sent to /dev/null > ------------------------------------------------------------------------------ EditLive Enterprise is the world's most technically advanced content authoring tool. Experience the power of Track Changes, Inline Image Editing and ensure content is compliant with Accessibility Checking. <a href="http://p.sf.net/sfu/ephox-dev2dev" target="_blank">http://p.sf.net/sfu/ephox-dev2dev</a> _______________________________________________ Nagios-users mailing list <a href="mailto:Nagios-users@lists.sourceforge.net">Nagios-users@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users" target="_blank">https://lists.sourceforge.net/lists/listinfo/nagios-users</a> ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null </blockquote></div>