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Monitor Unconfigured Objects With Nagios
Today, let us see how our support Techs configure monitoring of previously unconfigured hosts and services that a Nagios XI server has received passive check results for.
Overview of Passive check Processing
If a passive result is received for a host or service that has not yet been configured, the following happens:
• Firstly, the check result is discarded/ignored by the monitoring engine
• Secondly, the host and/or service will appear in the Unconfigured Objects administrative interface in Nagios XI
The Nagios XI administrator will be able to view the unconfigured host and service objects for which passive check results have arrived and has the option of adding the unconfigured hosts and services to the monitoring engine.
Unconfigured Objects Administration
Firstly, Navigate to Admin > Monitoring Config and select Unconfigured Objects.
Then, the unconfigured objects page will list any hosts or services that Nagios has received passive results for, but which have not yet been added to the monitoring engine.
Adding Unconfigured Objects
To add unconfigured objects to Nagios XI as host and service objects, we run the Unconfigured Passive Object wizard.
There are two ways we can run this wizard:
Add One Host with Services: Click the play button at the top right of the list for that host.
Add Multiple Hosts with Services: In the list of unconfigured objects, check the box for each host that we want to add. Then click the gear icon
at the bottom of the list.
A screen will appear, when wizard starts.
The list of hosts that will have services created will appear in the summary list. Run through the wizard selecting the preferred settings and Apply.
Click the View status details for xxx link which should direct to a screen.
Once the wizard has completed, the host and its services will no longer appear under the unconfigured objects section.
Auto Configure Settings
The ability to automatically create monitoring objects from received passive check results was added as a feature in Nagios XI 5.5.
In order to allow Nagios XI to automatically import the objects into Core Config Manager, enable Auto Import box needs to be check.
Once done, enable/disable Apply Configuration.
In larger deployments of Nagios XI, it may be beneficial to disable this functionality, especially when we are receiving a lot of check results from new systems.
By the selections on the Notifications, Groups and Advanced tabs we can determine the settings that new objects will be configure with.
We can also select the Contacts and/or Contact Groups we want applied to these objects.
The groups tab allows us to define what Host or Service groups will be assigned to the new objects.
The Host Template and Service Template settings allow us to use templates to define directives in the configs created.
After we have made our desired selections, click the Update Settings button to save the changes.
Removing Unconfigured Objects
There are three ways we can do this:
Remove All: Click the Clear Unconfigured Objects List link at the top of the list.
Remove One Host with Services: Click the Delete link at the top right of the list for that host. We can also delete individual services as we might not want a specific service to be added when running the wizard.
Remove Multiple Hosts with Services: In the list of unconfigured objects, check the box for each host that we want to remove. Then click the X icon at the bottom of the list.
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Today, we saw how to configure monitoring of previously unconfigured hosts and services that a Nagios XI server has received passive check results for.