Related to:

Opsview-Agent

Problem

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

Possible Cause(s)

• 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)

• 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

If Issue Persists

• Please contact with our Client Services team via the chat service box available in any of our websites or via email to support@itrsgroup.com
  
  
  
• Make sure you provide to us:

- ANY LOG FILE OR DIAGNOSTIC

- ANY SCREENSHOT

- ANY VENDOR/VERSION OF WHAT THEY ARE TRYING TO CONNECT TO

-Any troubleshooting step already verified from the ones described in this article.