Open Stack

On 4 June 2013 21:44, Jay Pipes <jaypipes at gmail.com> wrote:

>
> Here's my advice:
>
> * DO use Galera for Identity and Image databases
> * DO share Identity and Image database cluster across regions/zones (WAN
> replication actually works very well for this low-write, heavy-read data
> access pattern)
> * DO use a separate Galera cluster for Compute, Volume, Dashboard, and
> Network databases in each region/zone
> * do NOT use Galera for metering data. Galera is great for light to medium
> write to read ratios. It is NOT a good idea to put archival-type data like
> meters/events data into Galera and replicate it all over the place when
> there are so many writers and very few readers. MySQL's standard
> replication works just great for this kind of data access pattern.
> * do NOT use the SQL driver for Keystone tokens. Use the memcache driver.
> * do NOT use the SQL driver for Keystone catalog. Use the templated
> catalog driver.
>
>
Excellent advice, thank you for sharing. :) This brings to mind another
area that needs discussion - that of geo-replication or implementations
across various geo's. Perhaps that should be shared in alternative threads.
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