Posting an alert via HTTP to 3rd party app

[ric.flair.wcw]

Good evening experts,

First of all I don't have experience with Nagios so any info you'll share will be new to me.
I have an app where I want to consume Nagios notifications. I presumed there is a webhook option in Nagios so it can send alert via HTTP to my app. I found a forum thread (https://support.nagios.com/forum/viewto ... =7&t=37493) but it is 4 years old now and I hope there is a another more shiny way for doing that.
I found the 'Notifications' section in the Nagios doc (https://assets.nagios.com/downloads/nag ... tions.html) but it didn't help unfortunately.
If there isn't then I am not sure how the commands can be used and how to bind them to Nagios alerts / notifications.

Thanks a lot!

Best regards,
V.

[benjaminsmith]

Hi V,

So that solution is a good starting point. Essentially, if you can post data to your web app using a curl command, like:

Code: Select all

/usr/bin/curl --data "param1=value1&param2=value2" https://yourdomain.com/things

You can then build up a custom notification command in Naigis using that as a starting point. All the notification data such as the hostname, time, state type can be passed into your notification command via system macros.

See: https://assets.nagios.com/downloads/nag ... olist.html

Here's an example of the notification handler in Nagios XI for the phpmailer ( passes the macros as arguments to the PHP script to send to the contact).

Code: Select all

/usr/bin/php /usr/local/nagiosxi/scripts/contact_notification_handler.php
--contactemail="$CONTACTEMAIL$" --subject="** $NOTIFICATIONTYPE$ Host Alert:
$HOSTNAME$ is $HOSTSTATE$ **" --message="***** Nagios Monitor XI Alert
*****\n\nNotification Type: $NOTIFICATIONTYPE$\nHost: $HOSTNAME$\nState:
$HOSTSTATE$\nAddress: $HOSTADDRESS$\nInfo: $HOSTOUTPUT$\n\nDate/Time:
$LONGDATETIME$\n"

Hope that helps clear things up.
Benjamin

[ric.flair.wcw]

Hi,

Sorry for the late reply and thank you for the hint!

Eventually I used the following definitions:

Code: Select all

define service {
    host_name                   computer-2.broadband
	service_description         is_splunk_running
	check_command               check_http!-p 8000!!!!!!!
	max_check_attempts          1
	notification_period         24x7
	notification_options        w,c,r,u,f,s,
	notifications_enabled       1
	contacts                    reaction
	stalking_options            o,w,c,u,N,
	register                    1
}

define contact {
    contact_name                        reaction
	service_notifications_enabled       1
	service_notification_period         24x7
	service_notification_options        w,u,c,f,s
	host_notification_commands          notify_reaction
	service_notification_commands       notify_reaction
	can_submit_commands                 1
}

define command {
    command_name             notify_reaction
	command_line             /usr/bin/curl --header "Content-Type: application/json" --request POST --data '{"error": "host is down", "host": "$HOSTADDRESS$:q"}' --inecure https://computer-2.broadband:8443/reaction-engine/notification/event/nagios
}

define host {
    host_name               computer-2.broadband
	address                 computer-2.broadband
	max_check_attempts      1
	active_check_enabled    1
	notification_period     24x7
	notifications_enabled   1
	register                1
}

Regards,
V.