Host and service notifications "ghosts"

ecastillo · Post by **ecastillo** » Mon Feb 11, 2019 2:15 pm

Greetings.

We have a very particular case of host notifications and services that were deleted in Nagios XI.

In one case the Host was deleted, we checked CCM, object files and the database and there is no record of the configuration of that host exists, however, notifications are still received per state down.

The log files and the status histories also do not leave records of the generated notifications.

Any idea of the cause of the problem?

We have a Nagios XI version 5.5.2 in Centos 6.7

scottwilkerson · Post by **scottwilkerson** » Mon Feb 11, 2019 2:26 pm

Can you show the output of the following:

Code: Select all

ps -ef|grep nagios.cfg

ecastillo · Post by **ecastillo** » Mon Feb 11, 2019 2:38 pm

Attached results

Thanks!

scottwilkerson · Post by **scottwilkerson** » Mon Feb 11, 2019 2:41 pm

How long after removing the host did you receive an alert? It is possible it was in queue waiting to send

ecastillo · Post by **ecastillo** » Mon Feb 11, 2019 2:45 pm

We think about the same thing, but it has been a few weeks since the removal of the host.

We have also reviewed the message queue of our smtp server and we do not see messages queued

scottwilkerson · Post by **scottwilkerson** » Mon Feb 11, 2019 2:50 pm

Can you show the message obfuscating any sensitive information?

ecastillo · Post by **ecastillo** » Mon Feb 11, 2019 3:16 pm

I have the case of a service that has the same behavior as the host.

The host does not exist in XI, I do not have any record or evidence of the notifications

In the case of the service, not-ok notifications are received, but the state has been in a stable way in ok.

You can see that the notification delivery dates, the historical status of the service, and the latest notifications sent do not match.

scottwilkerson · Post by **scottwilkerson** » Mon Feb 11, 2019 3:20 pm

I'm confused, I thought the host was deleted and wasn't being monitored any longer.

One this I do note is that you are running 5.5.2 and there were several bug relating to incorrect notification being sent that the latest and last known fix was in 5.5.9 for this.

ecastillo · Post by **ecastillo** » Mon Feb 11, 2019 3:24 pm

##I'm confused, I thought the host was deleted and wasn't being monitored any longer.

I feel the confusion.

Yes, the host was removed. The example sent is just an example of another service that presents the same problem in another host

##One this I do note is that you are running 5.5.2 and there were several bug relating to incorrect notification being sent that the latest and last known fix was in 5.5.9 for this.

We will see if it is possible to update Nagios to its latest stable version.

The operating system is Centos 6.5 Is the new version compatible?

scottwilkerson · Post by **scottwilkerson** » Mon Feb 11, 2019 4:02 pm

ecastillo wrote:The operating system is Centos 6.5 Is the new version compatible?

Yes

https://assets.nagios.com/downloads/nag ... ctions.pdf

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Host and service notifications "ghosts"

Host and service notifications "ghosts"

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