[SAC] Munin notes

[Frank Warmerdam]

On Tue, Aug 21, 2012 at 2:56 PM, Alex Mandel <tech_dev at wildintellect.com> wrote:
> Due to the ongoing troubleshooting on Tracsvn I was paying a little more
> attention to Munin.
>
> 1. We still need to decide where emails should be sent when munin hits a
> warning or critical value (eg. disk is over 90%). I don't want to use
> the Sac list because the number emails per incident can get astronomical
> quickly (1 email per chart even if only 1 chart is out of bounds, repeat
> every 5 minutes until issue is resolved). Do we have an svn watch type
> list or something similar that sends out but isn't really for discussion?

Alex,

Perhaps we could setup a sac-alert mailing list?  I'm just a bit
concerned about alerting going nuts with lots of message and
also bogging down mailman, filling up disks, etc.

> 2. I'd like to increase the ram allocation for the QGIS and the Projects
> VMs. 2 GB+ to each, as both are using 70%+ of their current RAM on a
> regular basis. Based on our notes we have 20 GB of unallocated RAM on
> osgeo4 currently, so this should be no problem. Just wanted to get the
> idea out before I ask osuosl to do it (might be able to do it with
> ganeti web interface ourselves).

I can live with this change, but it doesn't leave us much more room
if we want to spin up new machines or allocate more ram to existing
ones.  What happens when the VMs go over the physical RAM?
Does it degrade gracefully with some sort of swap equivelent?

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Software Developer