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Excerpts from Daniele Venzano's message of 2014-09-25 02:40:11 -0700:
> On 09/25/14 10:12, Qiming Teng wrote:
> > Yes, just about 3 VMs running on two hosts, for at most 3 weeks. This 
> > is leading me to another question -- any best practices/tools to 
> > retire the old data on a regular basis? Regards, Qiming
> 
> There is a tool: ceilometer-expirer
> 
> I tried to use it on a mysql database, since I had the same table size 
> problem as you and it made the machine hit swap. I think it tries to 
> load the whole table in memory.
> Just to see if it would eventually finish, I let it run for 1 week 
> before throwing away the whole database and move on.
> 
> Now I use Ceilometer's pipeline to forward events to elasticsearch via 
> udp + logstash and do not use Ceilometer's DB or API at all.
> 

Interesting, this almost sounds like what should be the default
configuration honestly.