Agent returning - NRPE: Unable to read output

Related to Copied

Opsview-Agent

Problem Copied

• When calling the Opsview-agent with valid parameters the agent returns with NRPE: Unable to read output

Possible Cause(s) Copied

• There can be many reasons why the agent returns with this string. Unable to read output suggests that the information returned from the agent on the end host is in a format that the agent doesn’t understand.

Possible Solution(s) Copied

• Log onto the end host running the agent (10.229.66.12 - from screenshot) and run the command manually like this

sudo su - opsview
/opt/opsview/agent/plugins/check_cpu_stats -w 90 -c 95

In this example the output returned

Can't locate Digest/MD5.pm

This highlighted that either the agent can access package MD5.pm or this isnt installed.

yum install perl-Digest-MD5