Originally Posted by ramikhshan
Return code of 127 for check of service 'HTTP' on host 'localhost' was out of bounds. Make sure the plugin you're trying to run actually exists you need to change the plugin path. it seems that you have installed plugin more than once. to do that:
find your resource.cfg
old plugin path---------
new plugin path---------
then restart nagios
...and since this thread has been closed for NINE YEARS
before you posted this, I think the OP had already solved the problem....