Nagios Support Forum

Posted: **Thu Feb 13, 2014 1:25 pm**

I know where I can set the generic email template for all host and service alerts.

I need to include a custom link based upon the different types of notifications. For instance, let's say I have a notification type A, type B, type C. I want a custom email for each that has a link to a specific web page based upon the host IP macro, but followed with a different link.

Example:

http://192.168.1.1/typeA.html
http://192.168.1.1/typeB.html
http://192.168.1.1/typeC.html

Where 192.168.1.1 is generated from $HOSTADDRESS$.

Posted: **Thu Feb 13, 2014 5:57 pm**

Hmm, this will take some looking into. That could be done at a base level by creating more notification handler commands and assigning them to different contacts based on what notification type they should be receiving.

Posted: **Fri Feb 14, 2014 9:33 am**

I would clone notify-service-by-email to a new handler, like notify-custom-service-by-email and make it call a script with all the macros as arguments. In the script, just put the logic to include the URL you want based on the value of one of those macros, depending on what you need. I've done this with Nagios core so I could have more control and flexibility with notifications.

Posted: **Fri Feb 14, 2014 11:33 am**

Thanks, hhlodge!

@jbennett
Let us know if this worked out for you.

Posted: **Tue Feb 18, 2014 4:16 pm**

hhlodge wrote:I would clone notify-service-by-email to a new handler, like notify-custom-service-by-email and make it call a script with all the macros as arguments. In the script, just put the logic to include the URL you want based on the value of one of those macros, depending on what you need. I've done this with Nagios core so I could have more control and flexibility with notifications.

I'm not sure I follow 100%. When you say to make it call a script, this is where I'm lost.

As it is now, my notify-service-by-email command is as follows:

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/usr/bin/printf "%b" "***** Nagios Monitor XI Alert *****\n\nNotification Type: $NOTIFICATIONTYPE$\n\nService: $SERVICEDESC$\nHost: $HOSTALIAS$\nAddress: $HOSTADDRESS$\nState: $SERVICESTATE$\n\nDate/Time: $LONGDATETIME$\n\nAdditional Info:\n\n$SERVICEOUTPUT$" | /bin/mail -s "** $NOTIFICATIONTYPE$ Service Alert: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ **" $CONTACTEMAIL$

Am I right in understanding that what you are suggesting is to create a script to put on the server (say, 'notification a.php' for instance) and then call it above in the same manner that xi_service_notification_handler does?

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usr/bin/php /usr/local/nagiosxi/scripts/handle_nagioscore_notification.php --notification-type=service --contact="$CONTACTNAME$" --contactemail="$CONTACTEMAIL$" --type=$NOTIFICATIONTYPE$ --escalated="$NOTIFICATIONISESCALATED$" --author="$NOTIFICATIONAUTHOR$" --comments="$NOTIFICATIONCOMMENT$" --host="$HOSTNAME$" --hostaddress="$HOSTADDRESS$" --hostalias="$HOSTALIAS$" --hostdisplayname="$HOSTDISPLAYNAME$" --service="$SERVICEDESC$" --hoststate=$HOSTSTATE$ --hoststateid=$HOSTSTATEID$ --servicestate=$SERVICESTATE$ --servicestateid=$SERVICESTATEID$ --lastservicestate=$LASTSERVICESTATE$ --lastservicestateid=$LASTSERVICESTATEID$ --servicestatetype=$SERVICESTATETYPE$ --currentattempt=$SERVICEATTEMPT$ --maxattempts=$MAXSERVICEATTEMPTS$ --serviceeventid=$SERVICEEVENTID$ --serviceproblemid=$SERVICEPROBLEMID$ --serviceoutput="$SERVICEOUTPUT$" --longserviceoutput="$LONGSERVICEOUTPUT$" --datetime="$LONGDATETIME$"

??

Or, do I create it more like the xi_service_notification_handler command and add in my needed argument as such?

Code: Select all

--veslink="http://$HOSTADDRESS$/mainmenu.html"

Posted: **Wed Feb 19, 2014 9:12 am**

Make your new notification command something like this.

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/usr/local/bin/notifications.ksh $NOTIFICATIONTYPE$ $SERVICEDESC$ $HOSTALIAS$ $HOSTADDRESS$ $SERVICESTATE$ $LONGDATETIME$ $CONTACTEMAIL$ .... etc. ...

Then in notifications.ksh, something along these lines.

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#!/bin/ksh
NOTIFICATIONTYPE=$1
SERVICEDESC=$2
HOSTALIAS=$3
....

case $NOTIFICATIONTYPE in
PROBLEM)
        URL=http://192.168.1.1/typeA.html
;;
RECOVERY)
        URL=http://192.168.1.1/typeB.html
;;
ACKNOWLEDGEMENT)
        URL=http://192.168.1.1/typeC.html
;;
*)
        URL=http://whatever
;;
esac

/usr/bin/printf "%b" "***** Nagios Monitor XI Alert *****\n\nNotification Type: $NOTIFICATIONTYPE\n\nService: $SERVICEDESC\nHost: $HOSTALIAS\nAddress: $HOSTADDRESS\nState: $SERVICESTATE\nURL: $URL ..... " | /bin/mail -s "** $NOTIFICATIONTYPE Service Alert: $HOSTALIAS/$SERVICEDESC is $SERVICESTATE **" $CONTACTEMAIL

Just make sure you pass all the macros you want as arguments to the script and set a variable for them and then use the variables you set with the normal $VAL constuct, i.e. no trailing $ as in the macros. I hope this makes sense.

Posted: **Wed Feb 19, 2014 11:43 am**

I have found the bash references below to be extremely helpful for those new to bash scripting:
http://www.tldp.org/LDP/abs/html/
http://www.tldp.org/LDP/Bash-Beginners-Guide/html/
Happy scripting!

Posted: **Thu Feb 20, 2014 3:47 pm**

Thanks for the help, but I don't think the above will do what I'm looking for. I'm not looking to get a different email for an problem/recovery/acknowledgement.

I have service checks that range from checking processes on boxes, to checking the state of hardware as reported back through the software.

Some of these checks are checking cameras. We have developed a page that is specific to these cameras. Since cameras are tied to certain boxes, the IP of hte box is the web address, followed by ":8080/mainmenu.html".

As it is set-up now, I have a generic link in the main notifications email as follows: http://%hostaddress%:8080/mainmenu.html

This link is only valid for camera issues. The information that is reported on this page is specific to the cameras. Since that link is included in the standard notification template, it is generating the link for service messages that aren't related to camera issues.

I was hoping to create a template to apply to only the services that concern camera issues and thus have notification emails for the cameras be the only ones to contain this link.

Since we will be generating pages for the other issues as well (in the future, but not currently) having a generic link in the notification template makes sense.

I was looking at the misc settings tab under the service template management and it seems that I can call these fields with a macro.

My thought was to create a service template with all of the settings I need, then include the :8080/mainmenu.html portion of the link in the notes field here.

Then, under the notification management templates, I would include a link as follows:

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http://%hostaddress%%servicenotes%

Is there any reason this wouldn't work?

It also seems that when I make changes to these notification templates and select all of the users and usergroups to apply it, my notifications stop. I managed to get them working once, but I'm not sure what I did. Does a process stop that's having trouble restarting perhaps?

Posted: **Fri Feb 21, 2014 1:15 pm**

A few comments:

This will only work for services, as you include the %servicenotes% macro, it you try to use this template with hosts, it will break.
In order to use the templates for contacts, those contacts need to be originally configured as XI users.

If you can test this without breaking notifications in production, please do so. Once the new notification is enabled on a user, force a notification to get sent and then check the maillogs:

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tail -25 /var/log/maillog

In order to test it correctly, you most likely need to submit a passive critical check for a service that the user is a contact of.

Posted: **Fri Feb 21, 2014 2:26 pm**

abrist wrote:This will only work for services, as you include the %servicenotes% macro, it you try to use this template with hosts, it will break.

That's perfect since I only want to use it for services anyways!

In order to use the templates for contacts, those contacts need to be originally configured as XI users.

I'm trying to get away with not doing this via the contacts template.

I'm wondering if it's possible to do this by using the macros that Nagios has built in instead (as this would be the most simple way of having custom notifications for different services).

In the notification template under Admin -> Notification Management -> Email Notifications, I would be able to just include the macros to call the host address and the notes field (Service Management -> Misc Settings) from the service as follows: http://%hostaddress%%servicenotes%

The notes field on the services in question would be like this: :8080/mainmenu.html
Other services might be like this: :8080/vesmenu.html

Again, the Notes field link to depend on teh type of service (camera, router, etc).

This way, when we get the email, the link that is generated will take you directly to that device page that we have created.

I think you're still trying to help me with the method that hhlodge suggested, which isn't what I'm trying to do in this instance.

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