[icinga-users] notification command configuration

Michael Friedrich michael.friedrich at gmail.com
Wed Feb 6 16:27:23 CET 2013


On 06.02.2013 14:55, Simon Oosthoek wrote:
> Hi all
>
> I'm wondering why notification comand_line's are so complicated (i.e.
> long and hard to read).
> Most if not all relevant macro's are available as environment variables,
> according to the documentation
> http://docs.icinga.org/latest/en/macrolist.html
>
> Wouldn't it be much easier to define a script to handle the sending of a
> notification (doesn't matter what type)? The script could then take the
> information from ICINGA_* variables and if one isn't exported, request
> it from the commandline.

There's a reason why environment macros are by default disabled, as they 
cause problems, leak memory and so on. Google for the details.

Even if the command line is complicated, I still advise users to use the 
"normal" macros calculated on command execution, instead of pushing into 
your env memory.

Try whatever fits best - but you've been warned.

kind regards,
Michael

>
> Then the script can use all that to produce an e-mail or sms or whatever.
>
>
> e.g. instead of:
> command_line    /usr/bin/printf "%b" "$SHORTDATETIME$ -
> Info:\n\n$HOSTOUTPUT$\n\n$NOTIFICATIONTYPE$ - Host $HOSTNAME$ is
> $HOSTSTATE$\n\n(Address: $HOSTADDRESS$ Displayname:
> $HOSTDISPLAYNAME$)\n\nNotes: $NOTIFICATIONAUTHOR$
> $NOTIFICATIONCOMMENT$\n$HOSTNOTESURL$\n\nUrl:\nhttp://ICINGAHOST/icinga/cgi-bin/extinfo.cgi?type=1&host=$HOSTNAME$\n\n"
> | /usr/bin/mail -s "$NOTIFICATIONTYPE$ - $HOSTNAME$ is $HOSTSTATE$"
> $CONTACTEMAIL$
>
> why not:
> command_line	$USER1$/send_email
>
> with /usr/local/icinga/libexec/send_email:
> #!/bin/bash
>
> if [[ -z "$ICINGA_CONTACTEMAIL" ]]; then
>           exit 1
> fi
>
> mutt -s "$ICINGA_NOTIFICATIONTYPE - $ICINGA_HOSTNAME is
> $ICINGA_HOSTSTATE" "$ICINGA_CONTACTEMAIL"<<EOF
>
> Info: $ICINGA_HOSTOUTPUT
>
> $ICINGA_NOTIFICATIONTYPE - Host $ICINGA_HOSTNAME is $ICINGA_HOSTSTATE
>
> Address: $ICINGA_HOSTADDRESS
> Displayname: $ICINGA_HOSTDISPLAYNAME
>
> Notes: $ICINGA_NOTIFICATIONAUTHOR $ICINGA_NOTIFICATIONCOMMENT
> $ICINGA_HOSTNOTESURL
>
> Url:
> http://ICINGAHOST/icinga/cgi-bin/extinfo.cgi?type=1&host=$ICINGA_HOSTNAME"
>
> EOF
>
> I've yet to try it, but I was also wondering how to force icinga to send
> a notification so I could test it...?
>
> /Simon
>
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-- 
DI (FH) Michael Friedrich

mail:     michael.friedrich at gmail.com
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icinga open source monitoring
position: lead core developer
url:      https://www.icinga.org




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