[openstack-dev] UTF-8 required charset/encoding for openstack database?

Chris Friesen chris.friesen at windriver.com
Wed Mar 12 06:51:38 UTC 2014

On 03/11/2014 05:50 PM, Clint Byrum wrote:

> But MySQL can't possibly know what you _meant_ when you were inserting
> data. So, if you _assumed_ that the database was UTF-8, and inserted
> UTF-8 with all of those things accidentally set for latin1, then you
> will have UTF-8 in your db, but MySQL will think it is latin1. So if you
> now try to alter the table to UTF-8, all of your high-byte strings will
> be double-encoded.
> It unfortunately takes analysis to determine what the course of action
> is. That is why we added the check to Heat, so that it would complain
> very early if your tables and/or server configuration were going to
> disagree with the assumptions.

I find it interesting that the db migrations only specify character 
encodings for mysql, not any other database.  At the same time, devstack 
seems to create the nova* databases as latin1 for historical reasons.

postgres is supported under devstack, so I think this will end up 
causing a devstack/postgres setup to use utf-8 for most things but 
latin1 for the nova* databases, which seems odd.


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