Re: Two pg_rewind patches (auto generate recovery conf and ensure clean shutdown)

On 2019-Sep-27, Alexey Kondratov wrote:

> 1) Maybe I've missed it somewhere in the thread above, but currently
> pg_rewind allows to run itself with -R and --source-pgdata. In that case -R
> option is just swallowed and neither standby.signal, nor
> postgresql.auto.conf is written, which is reasonable though. Should it be
> stated somehow in the docs that -R option always has to go altogether with
> --source-server? Or should pg_rewind notify user that options are
> incompatible and no recovery configuration will be written?

Hmm I think it should throw an error, yeah. Ignoring options is not
good.

> + # Now, when pg_rewind apparently succeeded with minimal permissions,
> + # add REPLICATION privilege. So we could test that new standby
> + # is able to connect to the new master with generated config.
> + $node_standby->psql(
> + 'postgres', "ALTER ROLE rewind_user WITH REPLICATION;");

I think this better use safe_psql.

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Álvaro Herrera https://www.2ndQuadrant.com/
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