event handler

[vvz]

Hello!
Could somebody have a look at my configs and say what's wrong?

I'm trying to send a phone call via Asteriks and have a script to initiate call

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#!/bin/bash

#what state of host?

case "$1" in

OK)
        ;;
UNREACHABLE)
        ;;
DOWN)
        case "$2" in

        SOFT)
                  case "$3" in
                        1) touch checkfile.txt
                        ;;

                        3)
                                case "$4" in
                                     'sip:300@localhost')
                                                        sudo /usr/local/bin/linphonec -s sip:300@localhost
                                      ;;
                                     'sip:200@localhost')
                                                        sudo /usr/local/bin/linphonec -s sip:200@localhost
                                      ;;
                                esac
                        ;;


                    esac
           ;;


        HARD)

           ;;
        esac
;;
esac

exit 0

the name of the script - asteriks-host-phone-call - -rwxr-xr-x nagios nagios

if I initiate this script from command line like ./asteriks-host-phone-call DOWN SOFT 3 sip:300@localhost - everything works, and I receive a call, I'm doing this under root account. That means for me - script itself has no errors.

This is host definition

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define host {
        host_name               test-condor-site
        alias                   test-condor-site
        address                 172.16.37.44
        check_command           check-host-alive
        max_check_attempts      4
        check_interval          1
        retry_interval          1
        active_checks_enabled   1
        check_period            24x7
        contacts                vassiliy,vassiliy-phone          ;mike,mike-phone
        #contact_groups         admins
        notification_interval   3
        notification_period     24x7
        notification_options    d
        notifications_enabled   1
        event_handler           asteriks-host-phone-call
        event_handler_enabled   1
        }

global event handler - also switched on

contacts definitions
vassiliy

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define contact {
        contact_name                    vassiliy
        alias                           vassiliy
        contactgroups                   admins
        host_notifications_enabled      1
        service_notifications_enabled   1
        host_notification_period        24x7;vassiliy-oncall
        service_notification_period     24x7;vassiliy-oncall
        host_notification_options       d,u
        service_notification_options    w,c,r
        host_notification_commands      notify-host-by-email
        service_notification_commands   notify-service-by-email
        email                           vvins@starscriber.com
        can_submit_commands             1
        }

vassiliy-phone contact

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define contact {
        contact_name                    vassiliy-phone
        alias                           vassiliy-phone
        contactgroups                   admins-phone
        host_notifications_enabled      1
        service_notifications_enabled   1
        host_notification_period        24x7;vassiliy-oncall
        service_notification_period     24x7;vassiliy-oncall
        host_notification_options       d
        service_notification_options    c
#       host_notification_commands      notify-host-by-phone
#       service_notification_commands   notify-service-by-phone
        host_notification_commands      asteriks-host-phone-call
        service_notification_commands   asteriks-service-phone-call
        email                           sip:300@localhost
        can_submit_commands             1
        }

commands.cfg

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## these are commands to make calls via asteriks , comment them if you don't need them

define command {
          command_name   asteriks-host-phone-call
          command_line   /usr/lib64/nagios/plugins/eventhandlers/asteriks-host-phone-call  $HOSTSTATE$ $HOSTSTATETYPE$ $HOSTATTEMPT$ $CONTACTEMAIL$
                 }


define command {
         command_name    asteriks-service-phone-call
         command_line    $USER2$/asteriks-service-phone-call    $SERVICESTATE$ $SERVICESTATETYPE$ $SERVICEATTEMPT$ $CONTACTEMAIL$
                 }


define command {
          command_name   notify-host-by-phone
          command_line   sudo /usr/local/bin/linphonec -s $CONTACTEMAIL$ && sleep 30s && killall linphonec
 }


define command {
          command_name   notify-service-by-phone
          command_line   sudo /usr/local/bin/linphonec -s $CONTACTMAIL$ && sleep 30s && killall linphonec
 }

At host status - DOWN SOFT 3 - nothing happens
If I remove $CONTACTMAIL$ macros from commands.cfg for asteriks-host-phone-call and make corresponding changes in script - I get a call from Nagios

sudoers have these strings:

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nagios  ALL=(ALL)       NOPASSWD:/usr/lib64/nagios/plugins/eventhandlers/*
nagios  ALL=(ALL)       NOPASSWD:/usr/local/bin/linphonec
Defaults:nagios !requiretty

if you need more info - let me know

[vvz]

one more - in /var/log/messages I have

Apr 22 13:41:17 callme-crt-billing nagios: HOST EVENT HANDLER: test-condor-site;DOWN;SOFT;2;asteriks-host-phone-call

As you can see in logs Host event handler shows only 3 parameters - DOWN,SOFT,2 and event handler name. It should be this way?
Because, as you can see in my commands.cfg I give 4 parameters to script ($CONTACTMAIL$ is not in log file messages)

[abrist]

The $CONTACTEMAIL$ macro is not available to event handlers. You would need to hardcode the email addresses into the event handler script, or use this script as a notification handler.

[vvz]

OK, thank you. Can I give address value to event handler?

[abrist]

Yes. The commands would resemble:

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define command {
          command_name   asteriks-host-phone-call
          command_line   /usr/lib64/nagios/plugins/eventhandlers/asteriks-host-phone-call  $HOSTSTATE$ $HOSTSTATETYPE$ $HOSTATTEMPT$ "youremail@domain.tld"
                 }


define command {
         command_name    asteriks-service-phone-call
         command_line    $USER2$/asteriks-service-phone-call    $SERVICESTATE$ $SERVICESTATETYPE$ $SERVICEATTEMPT$ "youremail@domain.tld"
                 }

Just a heads up, if you ever pass a macro that could potentially contain a special char (space, etc), make sure to wrap the macro in quotes in your command and then once again in your script. This is most important for macros like "$PLUGINOUTPUT$", "$HOSTNAME", etc.

One other tip: I would suggest loading the passed macros into readable variable names in the scripts, then you do not need to reference the command in order to identify what is being passed:

Code: Select all

#!/bin/bash

HOSTSTATE=$1
HOSTSTATETYPE=$2
HOSTATTEMPT=$3
EMAIL=$4

#what state of host?

case "$HOSTSTATE" in

OK)
        ;;
UNREACHABLE)
        ;;
DOWN)
        case "$HOSTSTATETYPE" in
        SOFT)
                  case "$HOSTATTEMPT" in
                        1) touch checkfile.txt
                        ;;
                        3)
                                case "$EMAIL" in
                                     'sip:300@localhost')
                                                        sudo /usr/local/bin/linphonec -s sip:300@localhost
                                      ;;
                                     'sip:200@localhost')
                                                        sudo /usr/local/bin/linphonec -s sip:200@localhost
                                      ;;
                                esac
                        ;;
                    esac
           ;;
        HARD)
           ;;
        esac
;;
esac

exit 0

[vvz]

but in my configuration (check vassiliy-phone contact) I'm using host_notification_commands asteriks-host-phone-call,

so I'm using this script as notification command, right? or I do not understand something?

[vvz]

sorry, I just have read your last post.
I need to think about

[abrist]

so I'm using this script as notification command, right? or I do not understand something?

It all depends on which object the command is attached to. If the command is called from a contact as their notification handler, $CONTACTEMAIL$ will populate. If you are calling the command from an event handler, it will not.

I need to think about

No problem, I find a nice pint of Guiness can help

[vvz]

but in my case I call asteriks-host-phone-call from vassiliy-phone contact as an argument of host_notification_commands and $CONTACTMAIL$ macros is not populated. So what's the problem?


A can of beer would be good

[abrist]

it looks like you have 2 contacts and an event handler configured for that host. Force a few of the notifications to attempt to be sent by forcing the host down. Then get a nice large tail of the nagios log:

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tail -35 /usr/local/nagios/var/nagios.log