# Icinga2 check assigned with NodeName **URL:** \ **Category:** Service Monitoring\ **Tags:** icinga2\ **Created:** [April 14, 2021, 7:04pm UTC](https://community.icinga.com/t/icinga2-check-assigned-with-nodename/7131 "2021-04-14T19:04:31Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![mdelaney](https://community.icinga.com/letter_avatar_proxy/v4/letter/m/f07891/32.png) [@mdelaney](https://community.icinga.com/u/mdelaney)\ **Post date:** [April 14, 2021, 7:04pm UTC](https://community.icinga.com/t/icinga2-check-assigned-with-nodename/7131/1 "2021-04-14T19:04:31Z")
I’m trying to define a generic `load` checks the load of the given machine. On some of the examples, they use a check as follows: ```auto apply Service "load" { import "generic-service" check_command = "load" vars.backup_downtime = "02:00-03:00" assign where host.name == NodeName } ``` I have NodeName defined as a constant in `/etc/icinga2/constants.conf`. This check is defined in `/etc/icinga2/zones.d/global-commands/services.conf`, and I have a global zone as defined by the following block in `/etc/icinga2/zones.conf`. ```auto object Zone "global-commands" { global = true } ``` Yet, this never assigned, or at least I think it’s not. I came to this conclusion by means of the output of `icinga2 daemon -C` where I see the following: ```auto [2021-04-14 14:59:27 -0400] information/cli: Icinga application loader (version: r2.12.3-1) [2021-04-14 14:59:27 -0400] information/cli: Loading configuration file(s). [2021-04-14 14:59:27 -0400] information/ConfigItem: Committing config item(s). [2021-04-14 14:59:27 -0400] information/ApiListener: My API identity: icinga.workdomain.com [2021-04-14 14:59:28 -0400] warning/ApplyRule: Apply rule 'load' (in /etc/icinga2/zones.d/global-commands/services.conf: 17:1-17:20) for type 'Service' does not match anywhere! [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 1 NotificationComponent. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 47 Hosts. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 1 GraphiteWriter. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 3 NotificationCommands. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 1 FileLogger. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 1 IcingaApplication. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 3 HostGroups. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 1 CheckerComponent. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 50 Zones. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 1 StatusDataWriter. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 48 Endpoints. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 1 ExternalCommandListener. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 1 CompatLogger. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 1 ApiListener. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 228 CheckCommands. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 1 IdoPgsqlConnection. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 3 TimePeriods. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 141 Services. [2021-04-14 14:59:28 -0400] information/ConfigItem: Instantiated 6 ServiceGroups. [2021-04-14 14:59:28 -0400] information/ScriptGlobal: Dumping variables to file '/var/cache/icinga2/icinga2.vars' [2021-04-14 14:59:28 -0400] information/cli: Finished validating the configuration file(s). ``` I’m pretty new to Icinga2, so maybe I’m overlooking something obvious or I’m implementing this in a wonky way. Any help getting this setup would be greatly appreciated. ---
**Author:** ![dgoetz](https://community.icinga.com/user_avatar/community.icinga.com/dgoetz/32/917_2.png) [@dgoetz](https://community.icinga.com/u/dgoetz)\ **Post date:** [April 15, 2021, 6:34am UTC](https://community.icinga.com/t/icinga2-check-assigned-with-nodename/7131/2 "2021-04-15T06:34:14Z")
NodeName is always a very bad idea as it will generate a different configuration everywhere. In your case it is only matching on the central system for itself, all other systems where the configuration is synced to will also generate a local service, but this will not accepted by the central system as it does not have an object for it. ---
**Author:** ![mdelaney](https://community.icinga.com/letter_avatar_proxy/v4/letter/m/f07891/32.png) [@mdelaney](https://community.icinga.com/u/mdelaney)\ **Post date:** [April 16, 2021, 1:19pm UTC](https://community.icinga.com/t/icinga2-check-assigned-with-nodename/7131/3 "2021-04-16T13:19:24Z")
@dgoetz Oh okay. If I wanted this to get applied to all Linux/\*NIX nodes would you suggest something more like: ```auto apply Service "load" { import "generic-service" check_command = "load" vars.backup_downtime = "02:00-03:00" assign where host.vars.os == 'Linux' } ``` ---
**Author:** ![dgoetz](https://community.icinga.com/user_avatar/community.icinga.com/dgoetz/32/917_2.png) [@dgoetz](https://community.icinga.com/u/dgoetz)\ **Post date:** [April 16, 2021, 1:37pm UTC](https://community.icinga.com/t/icinga2-check-assigned-with-nodename/7131/4 "2021-04-16T13:37:17Z")
Yes, having a custom variable on all hosts and using this for apply is the best way to go. My goal is always a rule-based configuration where only a host with custom variables needs to be created and no other configuration to be touched. (There is a small error by using single instead of double quotes in your example. Icinga 2 is really picky with this.) ---
**Author:** ![mdelaney](https://community.icinga.com/letter_avatar_proxy/v4/letter/m/f07891/32.png) [@mdelaney](https://community.icinga.com/u/mdelaney)\ **Post date:** [April 16, 2021, 2:27pm UTC](https://community.icinga.com/t/icinga2-check-assigned-with-nodename/7131/5 "2021-04-16T14:27:46Z")
Awesome, thanks for the information. I was able to get this working, I appreciate the effort.