On Wed, May 6, 2015 at 10:26 PM, Matthias Wessendorf <matzew(a)apache.org>
wrote:
On Wed, May 6, 2015 at 8:27 PM, Douglas Campos <qmx(a)qmx.me> wrote:
> Howdy y'all!
>
> I'm revisiting migration strategies for UPS master, and we have a tough
> situation to deal with.
>
> Since we have moved keycloak to its own DataSource, there are KC
> leftovers at UPS database which need to be cleaned up.
>
> 1) Any suggestions on how to provide a migration path?
> Since the tables are intertwined with UPS tables, it's not a matter of
> doing a db dump/restore...
>
how are they intertwined? Is UPS stuff stored in KC tables, or vice versa?
UPS tables live alongside KC tables on the same schema/database
> 2) How to ensure we can safely get rid of the leftover tables on UPS
> DataSource?
> I can easily provide migrations which just nuke the tables from the
> face of the earth,
>
that's good, but
> but how to do this without data loss?
>
I don't know :-) I wonder if we just can not move the data to a new
datasource.
We can, but you know how risky data migration is :)
>
> Thoughts?
>
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Matthias Wessendorf
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