No plugin output with icinga-user for one specific host

Hi all!

Having a bit of a strange issue. I don’t get any plugin output for one host, and only for that one host.
The plugin is check_iftraffic64, the checks work fine on other hosts.

It was working fine during the “testing” phase (finding the right plugin and parameters). After it was working on the cli, I went to the director and made all the ckeck and service templates in the GUI.
And now comes what probably is/was the issue:
When i created the check command I accidentially clicked “Icinga Check Command” instead of “Plugin Check Command”

At this point in time i only had that one host/service using this check command. In Icinga Web it showed me the icinga stats (as expected when using the Icinga Check…). At this point i changed the check command to the Plugin Check command type and since that i don’t get any plugin output for that host.
I created some other hosts using this check after i changed the check command type, all of them are working fine.

Maybe there is some cache or state file which needs to be deleted to get some output again? (maybe /varcache/icinga2)

Looked into the debug log, but no errors in there. Just that the check ran

Other things i tried:
Deleting the host in director and cli
Restarting the Icinga2 Service and der Server itself


  • Version used (icinga2 --version)
icinga2 - The Icinga 2 network monitoring daemon (version: 2.13.2-1)

Copyright (c) 2012-2022 Icinga GmbH (
License GPLv2+: GNU GPL version 2 or later <>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

System information:
  Platform: CentOS Linux
  Platform version: 7 (Core)
  Kernel: Linux
  Kernel version: 3.10.0-1160.62.1.el7.x86_64
  Architecture: x86_64

Build information:
  Compiler: GNU 4.8.5
  Build host: runner-hh8q3bz2-project-322-concurrent-0
  OpenSSL version: OpenSSL 1.0.2k-fips  26 Jan 2017

Application information:

General paths:
  Config directory: /etc/icinga2
  Data directory: /var/lib/icinga2
  Log directory: /var/log/icinga2
  Cache directory: /var/cache/icinga2
  Spool directory: /var/spool/icinga2
  Run directory: /run/icinga2

Old paths (deprecated):
  Installation root: /usr
  Sysconf directory: /etc
  Run directory (base): /run
  Local state directory: /var

Internal paths:
  Package data directory: /usr/share/icinga2
  State path: /var/lib/icinga2/icinga2.state
  Modified attributes path: /var/lib/icinga2/modified-attributes.conf
  Objects path: /var/cache/icinga2/icinga2.debug
  Vars path: /var/cache/icinga2/icinga2.vars
  PID path: /run/icinga2/
  • Operating System and version
    CentOS 7.9
  • Enabled features (icinga2 feature list)
Disabled features: compatlog debuglog elasticsearch gelf graphite icingadb influxdb influxdb2 opentsdb statusdata syslog
Enabled features: api checker command ido-mysql livestatus mainlog notification perfdata
  • Icinga Web 2 version and modules (System - About)

  • Config validation (icinga2 daemon -C)
    No errors, only some warnings for unused apply-rules

  • If you run multiple Icinga 2 instances, the zones.conf file (or icinga2 object list --type Endpoint and icinga2 object list --type Zone) from all affected nodes
    Only one instance