[ale] [OT] Atlanta Public Schools RFP "Linux Managed Services"

[Jeff Lightner]

Nagios will let you build monitors based on snmp as well.

It isn't just an "up/down" kind of thing.  You can make your own scripts
that use defined returned codes to be used for Nagios.  

We don't really use it for Network monitoring because my boss thinks
Orion is the cat's meow for Network monitoring (in fact he thought he
could use Orion to replace Nagios for systems monitoring but that didn't
quite pan out).   Because of that I've not played with mrtg and some of
the other things that I'm pretty sure are available with Nagios.   There
are plugins available for almost everything and of course it has the
benefit of being "free".

I've worked at other places where we used commercial things like $U and
Patrol but in those shops the configs were done by someone else - I was
just the guy that got the 3 AM pages.   Here I do quite bit with the
Nagios configs.  One of the scripts I've written checks which nodes it
the active node of a cluster and warns if it is not the original primary
but only does a critical alert if the cluster service is down
completely.   My Windoze admins were amazed when I built that for them
using Nagios and nsclient.

-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
To: ale at ale.org
Bruce
Sent: Monday, August 27, 2007 2:43 PM
To: Atlanta Linux Enthusiasts
Subject: Re: [ale] [OT] Atlanta Public Schools RFP "Linux Managed
Services"

I use a commercial tool. The tool uses SNMP Write to
set up the Cisco SAA Transactions. Basically, we use
it to monitor availability and latency (Cisco SAA
Ping), Web Page availability and latency (Cisco SAA
HTTP), DHCP responsiveness, DNS responsiveness and
Jitter. You can also monitor FTP (and a few other
things).

So - with Nagios, you can monitor up/down status. I
used to use MRTG/RRDTool to do ping - that would work
for reachability/latency - but would be problematic
(ICMP packets are the first to be dropped, and just
because you can ping something doesn't mean it's
working).

If you are just doing Cisco SAA Ping, you can do a LOT
from a central router. Jitter takes a lot of
resources, so you would want to have a couple
measurement routers (but Jitter is not in the RFP, so
you could ignore it).

Does Nagios do MRTG/RRDTool? If so, that would let you
monitor WAN utilization and notify when you are
reaching a set utilization level.

Hmmmm, I've got a stack of 5 older Ciso 2500 series
routers and an ancient 10 Meg Cisco switch with 100
Meg uplinks. Might be time to install Nagios and see
what it will do! I don't think my stack supports Cisco
SAA, though. I'd have to mess with it.

Hmmm, if I had a pair of spare PCs, I'd test Nagios
and flow-tools.

--- Jeff Lightner <jlightner at water.com> wrote:

> Nagios apparently can be configured to monitor SAA -
> this document talks
> about using Nagios for SLAs and specifically
> mentions SAA.  We do Nagios
> but not the SAA stuff.
> 
>
http://www.terena.org/activities/tf-ngn/tf-ngn19/douitsis-nagios.pdf
> 
> 
> -----Original Message-----
> From: ale-bounces at ale.org
> [mailto:ale-bounces at ale.org] On Behalf Of
> Bruce
> Sent: Monday, August 27, 2007 12:14 PM
> To: Atlanta Linux Enthusiasts
> Subject: Re: [ale] [OT] Atlanta Public Schools RFP
> "Linux Managed
> Services"
> 
> And the next question (from reading the RFP) - is
> what
> type of routers and switches are in place, and are
> they capable of being monitored/managed via SNMP?
> 
> And if not Cisco - what would be a good drop-in
> replacement to measure from the central site? 
> 
> This could be fun. I have a day job, though.


       
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