[gentoo-server] Cacti/Nagios Integration

[gentoo-server] Cacti/Nagios Integration

[Lance Albertson]

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I know people probably have seen dicussions about this elsewhere but I
wanted to bring it to this list to get a broader sharing of ideas.
Lately, I've been wanting to do more with cacti and nagios both, but it
just seems as though there should be a way to tie the two together to
make things better. The biggest complaint I have thus far is polling the
same data twice using two different methods. I've been reading several
places of how people have combined this. Here are some of the variants
I've heard and I'm curious what you all think.

1) Putting all the scripts into net-snmp and having both cacti and
nagios making snmpget calls to get the information. 

This seems like an interesting idea. To me, snmp seems to be a rather
effiecient method of gathering information, but this method would
require some ideas on making this happen. I have yet to learn how to
extend net-snmp, but I know its rather easy. I'm thinking that it might
be possibly to have net-snmp directly calling nagios plugins and putting
it as another OID. The only other option with this idea is creating
custom scripts/MIB's for specific things.

2) Having Cacti directly calling nrpe to gather data.

I don't really like this idea personally because I feel that nrpe is
much slower than snmp calls. This would also require both programs to
access it doubling the polling which I don't like.

3) Having nagios polling the rrd files that cacti makes.

I don't think this is the best way to handle monitoring information for
nagios. You can't trust the information will be precisely correct all
the time. 

4) Have a script that parses the performance data log nagios produces
and have cacti poll that. 

I'm not sure how well this could work, but it was an idea that popped in
my head just now. Nagios can pull detailed peformance data that cacti
could use. I'm not sure how well this would work for making graphs. I
would fear having gaps in the graphs. 


Have any of you found a good way to integrate both of these excellent
tools to a more effecient manner, if so, PLEASE SHARE! :)
-- 
Lance Albertson <ramereth@gentoo.org>
Gentoo Infrastructure

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Re: [gentoo-server] Cacti/Nagios Integration

[Sancho2k.net Lists]

Lance Albertson wrote:
> I know people probably have seen dicussions about this elsewhere but I
> wanted to bring it to this list to get a broader sharing of ideas.
> Lately, I've been wanting to do more with cacti and nagios both, but it
> just seems as though there should be a way to tie the two together to
> make things better. The biggest complaint I have thus far is polling the
> same data twice using two different methods. I've been reading several
> places of how people have combined this.

Can't speak anything to integration with Cacti, but have you looked at 
APAN? It will let you take the data that Nagios gathers and graph it in 
RRDTool. In short, your nagios information becomes the data source for 
your RRAs. The nice thing is that you have full integration from the 
Nagios interface, so no two places to go for your info.

DS

Re: [gentoo-server] Cacti/Nagios Integration

[Lance Albertson]

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On Tue, 2004-06-29 at 21:31, Sancho2k.net Lists wrote:

> Can't speak anything to integration with Cacti, but have you looked at 
> APAN? It will let you take the data that Nagios gathers and graph it in 
> RRDTool. In short, your nagios information becomes the data source for 
> your RRAs. The nice thing is that you have full integration from the 
> Nagios interface, so no two places to go for your info.

Yeah I have, but imho cacti is 100x better than APAN. Better interface,
better control of layout, etc. 

-- 
Lance Albertson <ramereth@gentoo.org>
Gentoo Infrastructure

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ramereth/irc.freenode.net

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[gentoo-server] User Mode Linux init scripts

[Jacob Joseph]

Hi all.  A while back, I made some modifications to the Gentoo net init 
scripts to allow configuration of tun/tap devices as well as bridging 
from /etc/conf.d/net.  I've finally gotten around to contributing it 
back, but alas, the scripts have changed rather significantly and I'm 
looking for suggestions of how to best integrate my changes into the 
current infrastructure, increasing the chances of them being integrated 
as a whole.

An initial writeup of what I have done is available at:
http://jjoseph.org/linux-work/uml_gentoo

Thanks for any suggestions!

-Jacob