Nagios Support Forum

Hi,

We are trying to monitor AWS based Linux machine from the local environment. We are able to monitor most of the services. But for some service like check_cpu_stats, check_open_file,check_mem we are getting NRPE: Unable to read output error. Pls, help us to troubleshoot this issue.

This error can be caused if those commands are failing for some reason. Try running the commands directly on the Linux machine -not using check_nrpe on XI - and let us know the results.