On 2021-06-14 08:10:58 -0400, Dave Cramer wrote: > On Sun, 13 Jun 2021 at 19:32, Avi Weinberg <a...@gilat.com> wrote: > > > I need to take actions when Postgres streaming replication failover > occurred. Is there a way to be notified when Postgres slave becomes > master? > > On the surface this seems like a great idea, however contemplating this a bit > more; where would the signal come from ? Currently the only option I can think > of is to send a NOTIFY. > It seems to me that the Patroni code is a better place to do this from.
I agree. That is something Patroni should do, not the database. Maybe
Patroni could be extended to invoke a script after taking some action.
I know of one program (vip_manager) which monitors patroni state and
takes action (enable/disable virtual ip addresses) - that one checks the
distributed database (etcd or whatever) periodically, AFAIK.
hp
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_ | Peter J. Holzer | Story must make more sense than reality.
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| | | h...@hjp.at | -- Charles Stross, "Creative writing
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