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From: Michael Grimm <[email protected]>
To: [email protected]
Subject: Cluster of 3 instances in distinct datacenters
Date: Sun, 14 Jun 2026 13:36:42 +0200
Message-ID: <[email protected]> (raw)

Hi,

I do currently run a postgres cluster spread over two datacenters about 200km apart. One primary, two secondaries and a master for pg_auto_failover (PAF). This cluster has to deal with a data volume of 8 GB and read-write operations with numbers of the very low end.

This setup runs perfectly well for the last month.

Now, I intend to move the server -running the PAF master and a secondary without quorum- to a datacenter about 1600km distant to the primary and other secondary with quorum. Ping between datacenters 200km apart are ~3ms, ping to the datacenter 1600km apart is ~24ms

Given the low traffic this cluster has to deal with: can a PAF master running at such a distant datacenter control the cluster?

Thanks and regards,
Michael

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