API: Restoring to Last Good Configuration Snapshot

[MrWoodward]

Is there a way using the Nagios XI API to restore to the "last good" configuration snapshot?

I found this page in your documentation, but didn't see any reference to the API.

https://support.nagios.com/kb/article.php?id=407

[lmiltchev]

Unfortunately, it is not possible to restore to a configuration snapshot via the REST API at this time. It would be a really cool feature. I am going to file an internal feature request for adding this functionality.

[MrWoodward]

Are there other ways to restore a configuration snapshot from the command-line of a Nagios server?

I'm attempting to create a Python script that runs on the Nagios server which (when detecting a certain state) can rollback/restore to the last good configuration snapshot.

[tmcdonald]

You could look at /usr/local/nagiosxi/scripts/nagiosql_snapshot.sh:

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[root@localhost scripts]# pwd
/usr/local/nagiosxi/scripts
[root@localhost scripts]# bash nagiosql_snapshot.sh this_one_works
taking snapshot
Backup Complete.
[root@localhost scripts]# bash nagiosql_snapshot.sh this_one_works restore
Restoring NagiosQL snapshot
Removing old files from /usr/local/nagios/etc
NOM SNAPSHOT /usr/local/nagiosxi/nom/checkpoints/nagioscore/this_one_works.tar.gz NOT FOUND!
Restoring NagiosQL databases...
Restore Complete.

The error about the snapshot not being found can be ignored.

[MrWoodward]

Thanks for the help. I'll take a look and get back to you.

Cheers.

[lmiltchev]

Sure. Let us know if this worked for you, so that we can lock the topic, and mark it as resolved. Thank you!

[MrWoodward]

The exact command appears to be:

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sudo /usr/local/nagiosxi/scripts/nagiosql_snapshot.sh <some_number_here> restore

and the checkpoints can be found in:

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/usr/local/nagiosxi/nom/checkpoints/nagiosxi

[lmiltchev]

You are correct. I just tested the script. It seems like that you need to use a number only (timestamp portion), for example:

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/usr/local/nagiosxi/scripts/nagiosql_snapshot.sh 1518716128 restore

instead of the full file name (timestamp + _nagiosql.sql.gz at the end).

In addition to this, in order to complete the restore, you will need to run the reconfigure.sh script:

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/usr/local/nagiosxi/scripts/reconfigure_nagios.sh

[MrWoodward]

Oh, that's good to know.

I've found so far that this must be run as `root` as well. I tried running it as `nagios` user, but that error'd out on me.

[lmiltchev]

I've found so far that this must be run as `root` as well. I tried running it as `nagios` user, but that error'd out on me.

The issue may be caused by wrong permissions on some of the files/directories. I can run these commands as nagios user just fine.

To start troubleshooting you can run:

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ls -la /usr/local/nagiosxi/nom/checkpoints
ls -la /usr/local/nagiosxi/nom/checkpoints/nagiosxi
ls -la /usr/local/nagiosxi/scripts
grep nag /etc/group
grep nagios /etc/passwd
chage nagios -l