host deletion

tgfde · Post by **tgfde** » Thu Aug 18, 2011 12:51 pm

I deleted a host successfully but still receiving notification that the host is down.

How is this possible?

Thanks.

agriffin · Post by **agriffin** » Thu Aug 18, 2011 1:15 pm

What steps did you take to delete it? In Nagios XI your configuration is kept in two places, in an internal database and in the traditional Nagios Core configuration files for the monitoring engine. Deleting the configuration files is ineffective because they will be regenerated from the database. Deleting from the database is at least a two-step process, deleting and then applying configuration. If you go to Admin->Core Config Manager->Hosts, do you see any messages about being 'Out of Sync'?

Post by **lmiltchev** » Thu Aug 18, 2011 1:17 pm

It is possible that you have multiple instances of Nagios running on your machine. Please, check our Wiki page:

http://support.nagios.com/wiki/index.ph ... t_Hosts.29

Use the Write Config Tool to see if you are going to get any config errors.

Did you delete the host and its services from the Nagios Core Config Manager? Can you still see this host's *.cfg file in "/usr/local/nagios/etc/hosts"?

tgfde · Post by **tgfde** » Thu Aug 18, 2011 1:53 pm

Hi,

I do have multiple instance of nagios but only being monitored by one. I no longer see the host int he "host" config file.

Would restarting Nagios make it go away? I just don't like restarting Nagios in the middle of the day during work hours.

Thanks.

Post by **lmiltchev** » Thu Aug 18, 2011 2:08 pm

Give it a try later (after work hours) and let us know if this fixed your problem.

tgfde · Post by **tgfde** » Thu Aug 25, 2011 10:23 am

It did not work.

I tried deleting a host from our Nagios test server and it worked. The only difference is that the agent was still on the network before removing the host from the check services and deleting it.

Unfortunately, I can't connect the host back to the network because it has been decommissioned. That said, how would I go about removing this host from Nagios.

Thanks.

Post by **nscott** » Thu Aug 25, 2011 11:00 am

tgdfe,

Can you go to Configure > Core Config Manager > Tools > Write Config Files and post the output of all four steps?

tgfde · Post by **tgfde** » Fri Aug 26, 2011 9:00 am

It looks like after restarting the Nagios again (4th step) resolved the issue.

Thank you.

Post by **nscott** » Fri Aug 26, 2011 9:56 am

Hey, glad you got it working.

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