NRPE Problem after Nagios Upgrade to 5.5.0

[aptmis]

Attached you will find the nrpe.cfg. This is my NNA Server which has IP 49 while XI server has IP 50. This was working fine till I upgraded/updated XI to 5.5.0. I am seriously regretting doing it. Please try to understand, we have lots of other projects to do and this is the last problem we need to spend time on. This has become more of a headache than a help software. About the Yum updates, I have done multiple times as suggested by you. I seriously don't know what other Yum updates you want me to perform. For now I removed all NRPE commands from the server as it creates nothing but nightmare for me by showing me error messages. Now, the problem with Nagios XI server is the same. They both are linux servers and requires NRPE to monitor.

[cdienger]

Were you able to get the ticketing issue sorted? I think a remote would be a big help since there seems to be some miscommunication(the nrpe version on XI is still at 2.15 despite your attempts to upgrade, and the 'yum updates' is the name of a service and not an actual suggestion to do a 'yum update for example). Feel free to PM me and we can set something up if needed.

[cdienger]

in case anyone else comes across similar issues:

-connection refused on port 5666 usually means that the nrpe agent is not running(or a filewall may be blocking port 5666)
-newer versions of check_nrpe use nrpe v3. The handshake error mentioned in the thread is seen if an agent uses version 2 and a version 3 check_nrpe command isn't updated to use the "-2" option.
-to use nrpe v3, agents may need to be upgraded. Installing the latest nrpe agent is covered in https://support.nagios.com/kb/article/n ... rpe-8.html.

[rajasegar]

I think the whole issue with 5.5.0 could have been avoided by updating us what we need to look out for.
There is no mention of (-2) etc in the release notes.

Thank god I did not just update and have all this issues.
Hope this can be improved in future releases.

Thank you.

[cdienger]

Thanks for the input and I agree that it could have been noted somewhere. Hopefully people also take advantage of the 3 instances(https://support.nagios.com/kb/article/n ... s-145.html) that an XI license provides so that upgrades can be done on a lab machine to work out any issues prior to upgrading a production machine.