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flapjackfeeder

Nagios/Icinga event broker module (NEB) to feed check execution results to the events queue in Flapjack, via Redis.

Known to work on Linux (eg Ubuntu Precise) with:

  • Nagios 3.2.3
  • Nagios 4
  • Naemon 4
  • Icinga 1.x

Icinga 2.x drops compatibility with NEB modules, but if you're running a recent version (2.4+) with the API enabled, you can use the flapjack-icinga2 API client as an event relay.

versioning

Versioning is done by tagging. Add a tag into git; that tag will become the version number during compile time via a define in the Makefile.

compiling

First clone the git repo to get the source. Then run make to compile. This will fetch and compile the only dependency (hiredis) for you as well.

vagrant@flapjack:$ cd /vagrant
vagrant@flapjack:/vagrant$ git clone https://github.com/flapjack/flapjackfeeder.git
vagrant@flapjack:/vagrant$ cd flapjackfeeder
vagrant@flapjack:/vagrant/flapjackfeeder$ make

If you build following the steps in this README, you get something like this:

vagrant@flapjack:/vagrant/flapjackfeeder$ ls -l *.o
-rwxr-xr-x 1 vagrant vagrant 56240 Jun 24 18:00 flapjackfeeder3-v0.0.5.o
-rwxr-xr-x 1 vagrant vagrant 56240 Jun 24 18:01 flapjackfeeder4-v0.0.5.o

Those are the two versions of the module built for Nagios3 and Nagios4/Naemon4.

usage

Configure Nagios/Icinga to load the neb module in nagios.cfg by adding the following line. Alter the redis host, port, database number and queue according to your needs.

broker_module=/tmp/flapjackfeeder.o redis_host=localhost,redis_port=6379,redis_database=0,redis_queue=events,timeout=5

You can feed multiple target databases by specifying them on the module load line.

broker_module=/tmp/flapjackfeeder.o redis_host=localhost,redis_port=6379,redis_database=0,redis_queue=events,redis_host=127.0.0.1,redis_port=6380,redis_database=1,redis_queue=flapjack_events

options

Besides the redis_host, redis_port, redis_database and redis_queue options, which can be given multiple times to provide data to more than one redis database, there are more options that you can set.

  • timeout in seconds (defaults to 1,5 seconds, but you can only specify an integer here)

    Warning: this will block nagios for the time it is waiting on redis not only once but every $redis_connect_retry_interval seconds!

  • redis_connect_retry_interval in seconds (defaults to 15 seconds)

  • flapjack_version (integer) if > 1, then it will create the extra object on the 'events_actions' queue required for safely interruptible event processing Flapjack v2+.