[collectd] munin to collectd migration: collectd-perl examples/ideas for collection.cgi
octo at verplant.org
Sat Nov 3 16:47:36 CET 2007
On Fri, Nov 02, 2007 at 01:46:33PM +0100, Stefan Wiederoder wrote:
> i'm thinking about a migration from munin to collectd, because munin
> has a big scalability problem.
just out of curiosity: What's causing problems?
> the biggest part is to transfer the plugins from muninexchange, so I´d
> very grateful if somebody can provide me a few examples?
Due to your mail I got curious how Munin plugins work. My quest for
understanding resulted in this small Perl script which (tries to)
translates from Munin plugins to collectd's exec-plugin (see
collectd-exec(5)). It's nothing fancy, just a quick hack / proof of
To translate a plugin from Munin to collectd, you first need to find a
suitable `type' which describes your data layout. For example, interface
counters usually use `if_octets'. This `if_octets' type tells collectd:
``Expect two counter values, the first one being RX traffic, the second
one is TX traffic. The maximum value for both is 4294967295 bytes per
The `types' are defined in a file called `types.db' which is located in
collectd's library path, i. e. where the plugins are, too. The syntax is
similar to RRDTool's.
> IMHO everybody needs/wants/expects a complete solution for his/hers
> client/server environment, maybe we can start to "collect" ideas for a
> web interface? (perl/PHP/ruby/whatever)
I'd welcome that a lot. I've hacked together that collection.cgi because
I wanted to see some graphs too. Then I've sometimes added a little
feature here or there when I wanted it, but I really don't enjoy web
programming a lot.. Maybe it's because I have to do it at work a lot :/
My requirements are pretty low (as you can see if you look at the
collection.cgi script ;):
- Make it possible/easy to compare certain aspects of two or more
servers. E. g.: ``Is the load balancing working as intended?''
- Don't show a gazillion graphs on one page, so it loads fast.
Florian octo Forster
Hacker in training
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 189 bytes
Desc: Digital signature
Url : http://mailman.verplant.org/pipermail/collectd/attachments/20071103/1b8d8ae6/attachment.pgp
More information about the collectd