monitoring_plugins

                                        
my Icinga2/Nagios monitoring plugins

                    

        
        

            
            

                

    

    
monitoring_plugins


This plugins work with Nagios and Icinga2.


Documentation focuses on use with Icinga2, becasue I use it.


check_fleet


Check state of systemd units deployed to CoreOS distributed init system Fleet.


It uses the Fleet APIv1 over unix socket or network port.


Installation


    

  • download check_fleet and place into PluginDir which is defined in /etc/icinga2/constants.conf.
    • 

  • chmod +x check_fleet
    • 

  • configure commands.conf and services.conf (see examples) 
    • 



Configuration example for Icinga2


in /etc/icinga2/conf.d/commands.conf


object CheckCommand "my-fleet" {
    import "plugin-check-command"

  command = [ PluginDir + "/check_fleet" ]

  arguments = {
    "-n" = {
      required = true
      value = "$fleet_name$"
    }
    "-s" = {
      required = true
      value = "$fleet_status$"
    }
    "-c" = "$fleet_cache_ttl$"
    "-h" = "$fleet_hostname$"
    "-p" = "$fleet_port$"
  }
}


in /etc/icinga2/conf.d/services.conf


apply Service "fleet-unit2-health" {
  # will return error if service exists
  import "generic-service"

  check_command = "my-fleet"

  vars.fleet_name = "missingUnit.service"
  vars.fleet_state = "missing""
}
apply Service "fleet-unit2-health" {
  # will return error if service doesn't exists or is not active 
  import "generic-service"

  check_command = "my-fleet"

  vars.fleet_name = "service@host.service"
  vars.fleet_state = "!active"

  assign where host.name == NodeName
}
apply Service "fleet-unit3-health" {
  # will return error if service exists and is not active, missing service is OK 
  import "generic-service"

  check_command = "my-fleet"

  vars.fleet_name = "service@host.service"
  vars.fleet_state = "active"

  assign where host.name == NodeName
}


Development


sudo ssh -nNT -oStrictHostKeyChecking=no -L /var/run/fleet2.sock:/var/run/fleet.sock -i /root/.ssh/coreos.pem core@
sudo chmod 777 /var/run/fleet2.sock


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