[f-nsp] SNMP tricks for Load Balancers (ADX, ServerIron XL)

[david raistrick]

On Fri, 28 Jan 2011, Drew Weaver wrote:

> 
> Does anyone have any nice MRTG templates for monitoring things like CPU,
> memory, and connections/sessions on foundry serverironXL or ADX series load
> balancers?


These are from SI's from a few years ago, they're a part of a much larger 
and uglier dynamicly generated system that started life before MRTG supported 
templates....and even then, this did a lot more than that. ;)

it'll take some work to integrate this stuff into your environment.... but 
the heavy lifting was done.


find these, and most of this email, here:
http://www.icantclick.org/~keen/foundrysimrtg/



start with cfgmaker -

env LANG=C cfgmaker --no-down --show-op-down --ifdesc=alias  \
  --global "WorkDir: $workdirprefix/$machine" \
  --global "IconDir: /" \
  --global "WriteExpires: Yes" \
  --global "WithPeak[_]: mywd" \
  --global "Options[_]: bits" \
  --global "LoadMIBs: /usr/share/snmp/mibs/UCD-SNMP-MIB.txt" \
  --global "XZoom[_]: 1.8" \
  --global "YZoom[_]: 1.8" \
   $string@$machine  | eval $filter > $machine.cfg

#### convert to 64bit counters here, because it doesn't Fing work right with
##  cfgmaker.
echo "fix 64bit counters"
sed -i -r "s/(^Target\["$machine"_[0-9]*\].*:)/\1::::2/g" $machine.cfg

now add what's in here:
foundry-extras-generic.template



you're going to need scripts/get-SI-data.sh, which has the magic to
extract the hard stuff.   you'll see it's used in a number of the 
templates.


now generate this guy to get some more things to work from: 
foundry-extras-SI.template  - I've included another copy here that has 
some memory tidbits that were not generated with the script below, and so 
you can see what it outputs.

# sh build-si-virtualtemplate.sh >> foundry-extras-SI.template

you'll need:
build-si-virtual-template
build-si-virtualtemplate.sh




for per-server connection details, (there some obvious naming convention 
requirements) which grabs data from the SI -and- from apache for the same 
graph:

si-conns.template

requires scripts/apacheconcurrentcons.sh for the apache side to work


It's overall pretty super fugly, but it got the job done.  Foundry in no 
way made it easy to get some of this data out.....not that it's any easier 
with F5 or CSS (actually, it is a bit easier with F5 come to think of 
it...)



--
david raistrick        http://www.netmeister.org/news/learn2quote.html
drais at icantclick.org             http://www.expita.com/nomime.html