default contact on hosts

[pspagnola]

when I look at the "alert settings" tab of a newly created host, I see one contact (me) and zero contact groups attached to the host.

How are these default values determined? I am using templates to control the notification settings, but I would like to better understand notification behavior defaults when no templates are used.

I have read KBs and searched the forums without any results related to default contact or contact groups applied to hosts.

[benjaminsmith]

Hi,

How are these default values determined? I am using templates to control the notification settings, but I would like to better understand notification behavior defaults when no templates are used.

When a template is not assigned it's going to use the local settings and you'll get a configuration error if a required directive is missing.

There's one caveat here, the concept of implied inheritance. In some cases, if a required directive for a service is missing it will try to use the value assigned to its host. For details on these rules, please visit the following page.

Nagios Core Object Inheritance

To see the complete object with all the inherited settings, look the object up in the following file.

Code: Select all

/usr/local/nagios/var/objects.cache

References
Using The Core Config Manager For Host Management

Using The Core Config Manager For Service Management

[pspagnola]

I guess one question I did not ask is: The default contact assigned to everyhost appears to be directly configured even though I did not do that. I believe direct object values override inherited template values. That is my main concern for the question.

Will the objects.cache file show me where a value came from or just show the final effective value set?

[benjaminsmith]

Hi,

The default contact assigned to everyhost appears to be directly configured even though I did not do that. I believe direct object values override inherited template values. That is my main concern for the question.

If you set up monitoring using the wizards, it selects the admin group by default unless the Nagios Administrators (admins) is unselected, I believe that is what happened. If you want to change all those objects, I would recommend using the Bulk Mods Tool in the Core Config Manager.

That is correct, any local settings will override what is in the templates.

Objects.cache will only show the final value set. In the CCM, under the actions menu, click Relationships, and modal will pop up showing all the templates the object is inheriting.

relationships-templates.png

You can also grab this data from the Config endpoint in the API.

Let us know if you have any other questions.

--Benjamin

[pspagnola]

I cannot find the relationship screen that you show. Can you tell me how to find it with more steps?

[benjaminsmith]

HI,

No problem, navigate to the CCM by going to Configure from the top-level navigation bar and then select CCM Advanced Configuration. Then click hosts (or services) under Monitoring from the left-hand sidebar menu.

This will produce a searchable listing of all the hosts in the database, under the actions column, click Relationships.

relationships-ccm.png

Let me know if that helps or if you have more questions.

[pspagnola]

thank you. It would be nice if the button was accessible from another area as well. like a relationship button when you click on the host.

[benjaminsmith]

Hi,

thank you. It would be nice if the button was accessible from another area as well. like a relationship button when you click on the host.

Your welcome and thanks for the feedback!