Replication using mTLS issue

From: Drew Zoellner <drewtzoellner(at)gmail(dot)com>
To: pgsql-general(at)postgresql(dot)org, postgres(at)thewickedtribe(dot)net
Subject: Replication using mTLS issue
Date: 2024-06-20 15:15:58
Message-ID: CAGWxRFfWbD3NNJcpiPA6+g+UYRHAmD6Z4+rQaHoNi5+EEt1gOg@mail.gmail.com
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Hi Postgres team, I’m receiving an issue matching pg_hba rules that I can’t
seem to sort out. I am trying to use mtls certificate authentication for
physical replication connections but keep receiving the following error…

pg_receivewal: error: FATAL: no pg_hba.conf entry for replication
connection from host "100.84.12.223", user "pgrepmgr_nonprod", SSL on

My pg_hba.conf file contains

hostssl replication pgrepmgr_nonprod 100.0.0.0/8 cert map=pgrepmgr_nonprod_map

I’ve made sure the rule comes first in my pg_hba.conf file or last.
I’ve read the pg_hba documentation fully and tried with all values for
hostssl field, user field and ip field. Still no luck.

Is cert authentication supported for replication connections?

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