Nagios Support Forum

Posted: **Thu Dec 11, 2014 4:59 pm**

Hello,

I have 20+ hosts, with more to come, that I'd like to start off with a host template. These hosts run the same service checks, ~18 checks, but they need to have different thresholds per host. I've configured the check commands to use custom values set in Free Variable Definitions for their threshold settings, and they work as I need. What I need now is to populate these Check/Alert/Free Variable Definitions to newly created hosts.

I've created a Host template with the check command, alert settings, and Free Variable Definitions that I'd like propagated across these new hosts. My problem is that I'm unable to see any of these settings in a newly created host. Either the template is not applied, or I don't know where to look.

Procedure:
1. Go to CCM
2. Go to Hosts
3. Go to "Add New"
4. Populate "Host Name" and "Address"
5. Go to "Manage Templates"
6. Assign my custom template. There are no other templates assigned at this point.
7. Click "Close" to continue
8. Click "Save"
9. Open the host from CCM->Hosts->Newly Created Host
10. Check Command, Check Settings, Alert Settings, and Free Variable Definitions are the same as if I'd chosen a default template.

I also tried assigning the template to the Host Groups that these host will be a part of, but I was left with the same default settings.

Current Setup:
CentOS5-32 Bit running under Hyper-V
Nagios 2012R2.7

Any assistance you can provide would be appreciated!

Posted: **Thu Dec 11, 2014 5:24 pm**

Go to the CCM->Hosts, click on the "View Text Config" actions button next to the host you just created (the diskette icon), and show us the config. Do the same thing with the template that you applied to this host (CCM->Host Templates-><your custom template>->View Text Config).

Posted: **Thu Dec 11, 2014 5:25 pm**

Can you post the host template and the test host configs. For each of them click the disk icon which opens a new web page with text configs.

Posted: **Fri Dec 12, 2014 10:15 am**

This is the host file, I do see the template listed in it.

Code: Select all

###############################################################################
#
# Host configuration file
#
# Created by: Nagios QL Version 3.0.3
# Date:	      2014-12-12 10:04:30
# Version:    Nagios 3.x config file
#
# --- DO NOT EDIT THIS FILE BY HAND --- 
# Nagios QL will overwite all manual settings during the next update
#
###############################################################################

define host {
	host_name			AAA-Test
	use				HT - Hub-WorkBench-Repository
	alias				AAA-Test
	display_name			AAA-Test
	address				minion
	register			1
	}	

###############################################################################
#
# Host configuration file
#
# END OF FILE
#
###############################################################################

This is the Host template. It shouldn't matter, but not all of the variables have been populated yet. I wasn't going to finish that step until I can get a few to apply correctly.

Code: Select all

define host {
       name                          		HT - Hub-WorkBench-Repository
       alias                         		Host template for a Hub/WorkBench/Repository.
       check_command                 		check_tcp!5666!!!!!!!
       initial_state                 		u
       max_check_attempts            		5
       check_interval                		5
       retry_interval                		2
       active_checks_enabled         		1
       passive_checks_enabled        		1
       check_period                  		24x7
       check_freshness               		1
       freshness_threshold           		3600
       retain_status_information     		1
       retain_nonstatus_information  		1
       contact_groups                		IT_Operations
       notification_period           		24x7
       notifications_enabled         		1
       __RABBITMQ_WORKBENCH_ENDPOINT_CRITICAL			1000
       __RABBITMQ_WORKBENCH_ENDPOINT_WARN			100
       __RABBITMQ_WORKBENCH_ERROR_CRITICAL			100
       __RABBITMQ_WORKBENCH_ERROR_WARN			10
       __WORKBENCH_PORTAL_METADATA_URL			https://CHANGEME.DOMAIN.com/DIRECTORY/PAGE
       register                    		0

}

This is what the GUI shows.

2014-12-12 10_10_25-Nagios XI - Configuration.png

2014-12-12 10_10_48-Nagios XI - Configuration.png

2014-12-12 10_10_59-Nagios XI - Configuration.png

Posted: **Fri Dec 12, 2014 1:40 pm**

Just for future reference, you will not see the inherited settings from a template on your main object, however, if you were to go look at the host/service check from one of the home > details pages, you should see that it is abiding by the template's rules. It would be nice to have a way to reliably show inherited configurations, without making it appear as if it is not already defined on the main object.

Posted: **Fri Dec 12, 2014 3:14 pm**

I was afraid that was the answer... So is there any way at all to see the Variable Definitions in the host? They will need to be customized per host, and right now the entire section is as blank as the above screen shot shows. Failing all of this, is there any other way to have host specific variables where I can define a default value and change it as needed?

Posted: **Fri Dec 12, 2014 4:42 pm**

You can always look in the objects.cache file:

Code: Select all

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

Or check the free variables with the json api:
http://<ip>/nagios/jsonquery.html

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