[naemon-dev] shadownaemon

Sven Nierlein Sven.Nierlein at Consol.de
Thu Mar 6 22:03:55 CET 2014


I am working with a client which has reached almost 200 cores across the globe
and Thruk is starting to become slow when viewing all instances into one
combined view. Since all core have livestatus already enabled, i wrote a small
program which fetches hosts and services by livestatus, writes out a naemon
config and starts and emtpy naemon core which loads the livestatus broker.
It then pulls in changed host and service status over livestatus as well as performance
counter from livestatus itself. So instead of 200 remote connections, thruk
has 200 local unix socket connections and is much faster again.

Basically it works like this:
%> ./shadownaemon -i remotehost:6557 -o /tmp/cache/inst1 -l .../naemon-livestatus/src/livestatus.o
started caching remotehost:6557 to /tmp/cache/inst1/live

Besides starting the cache manually, its planed to do that transparently from Thruk.
Logs and Commands are excluded from the cache and have to be fetched directly from the the
remote instance but in such large setups, Thruk uses a mysql cache anyway.

The source is in my branch for now:

So the main question is, do we want to maintain that thing besides naemon and the
main repository? I noticed there are some tools already, like ex. oconfsplit.

There are still a few things to work out and there are some todos left on top of that
file, but i hope you get the idea.

Any ideas or remarks on this?


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