Nagios Support Forum

Hi Team,

I want to disable monitoring on few servers, initially different filesystems and services were monitored on these services.

While disabling monitoring, I have first deleted the host from the list of servers in each service which were monitored then I made the host inactive and deleted the host as well created in Nagios.

When I clicked on apply configuration I am receiving attached error. whereas earlier it was working fine and I have disabled monitoring on various other servers as well.

Kindly suggest.

The error is indicating that in the /usr/local/nagios/etc/services/AIX-VAR.cfg file you have a service that is not attached to an existing host, or that the service is lacking a service_description field. It could be either, you'll need to check it out or post the file here. You can do this via the UI in CCM - once you find the AIX-VAR service, click the floppy disk icon to the right in order to view the text config.

In addition to what @bwallace mentioned, if you do not want to fix it, then you need to delete the services that were associated with that host as well. Services don't go away when a host does, they operate independently in that way.

Hi Team,

I have checked the file and I didn't get anything wrong in it.

And I can't delete the service completely as different other hosts are included in this service.

Kindly suggest.

Hi Team,

As per Bwallace suggestion below, I have checked the AIX-VAR file and compared it with the other service file.

bwallace wrote:The error is indicating that in the /usr/local/nagios/etc/services/AIX-VAR.cfg file you have a service that is not attached to an existing host, or that the service is lacking a service_description field. It could be either, you'll need to check it out or post the file here. You can do this via the UI in CCM - once you find the AIX-VAR service, click the floppy disk icon to the right in order to view the text config.

Below is my observation i.e. host_name is null in AIX-VAR whereas in reference file host_name consists list of hostnames:

AIX-Var file

define service {
host_name null
service_description /Var usage
use xiwizard_nrpe_service
servicegroups AIX_OS_Services
check_command check_nrpe!check_disk!-a '-w 25% -c 15% -p /var'!!!!!!
max_check_attempts 1
check_interval 5
retry_interval 1
check_period xi_timeperiod_24x7
notification_interval 0
notification_period xi_timeperiod_24x7
notifications_enabled 1
contacts ri_unix_team
contact_groups All_alerts
_xiwizard aix
register 1
}

Reference file :

host_name EU2NAPU319,EU2NAPU321,EU2NAPU329
service_description /usr usage
use xiwizard_nrpe_service
servicegroups AIX_OS_Services
check_command check_nrpe!check_disk!-a '-w 15% -c 10% -p /usr'!!!!!!
max_check_attempts 1
check_interval 5
retry_interval 1
check_period xi_timeperiod_24x7
notification_interval 0
notification_period xi_timeperiod_24x7
notifications_enabled 1
contacts ri_unix_team
contact_groups All_alerts
_xiwizard aix
register 1
}


Kindly suggest.

What is the host/service that you are trying to delete? What are the "dependent relationships" that you see when you click on the "Relationship Info" button next to the host/service under the CCM? Which of the services, "/Var usage" or "/usr usage", is located on line 16 in the "AIX-Var.cfg"? Have you tried assigning a host to "/Var usage" or deleting it?

Hi Team,

My aim was to disable monitoring for few hosts, I have followed below steps:

1)Checked which all services are monitored on those hosts (one of those service was AIX-VAR)
2)Then removed the host entry from each service from CCM
3)Then I made some services inactive which were only used to monitor any of these hosts
4)Clicked on apply configuration, but I received previously attached error message

I don't want to delete AIX-VAR service as it is used to monitor other hosts as well, on which I don't want to disable monitoring but AIX-VAR service consisted the hosts on which I want to disable monitoring so I just removed those hosts from the service.

Line 16 in the file is below line:

16 define service {
17 host_name null
18 service_description /Var usage

and so on.

I have also tried to added and delete some hosts in AIX-VAR service through CCM then click on "apply configuration" but didn't succeed still I am receiving the same error.


Kindly suggest some solution as soon as possible.

May I know What time do your team work?

Is opening a new support ticket in our email ticketing system an option for you? It is going to be faster to resolve the issue during a remote session. Send us an email at [email protected]. Type "Error while applying configuration" in the subject field, and provide a URL link to this topic in the email's body.

May I know What time do your team work?

Our normal business hours (CST) are:

Monday – Thursday: 9:00 am – 5:00 pm
Friday: 9:00 am – 2:00 pm

Hi Team,

We will let you know about opening a new support ticket in your email ticketing system, mean while can you suggest us some other options to solve this issue?

why the AIX-VAR config file is showing "host_name" as null? whereas it should show the list of hostnames on which monitoring is enabled.

Go to the CCM->Services->AIX-VAR->Manage Hosts, add at least one host, save, and apply configuration. Did this solve the issue?