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From: Ron Johnson <[email protected]>
To: pgsql-generallists.postgresql.org <[email protected]>
Subject: Re: Feature request: A method to configure client-side TLS ciphers for streaming replication
Date: Tue, 26 Aug 2025 08:59:39 -0400
Message-ID: <CANzqJaBirEU9ZNZdSSPKRW7Hm9LrXCYOcH62=bppzOr6-AvGVg@mail.gmail.com> (raw)
In-Reply-To: <CA+aQVj+i6c=6h3SHMVYwkdVZpyNUm5OnZOz=TnjLXxNpHKj75w@mail.gmail.com>
References: <CA+aQVj+i6c=6h3SHMVYwkdVZpyNUm5OnZOz=TnjLXxNpHKj75w@mail.gmail.com>

On Tue, Aug 26, 2025 at 3:28 AM xx Z <[email protected]> wrote:

> Hello PostgreSQL community,
>
> I have a question regarding the configuration of streaming replication.
>
> When setting up streaming replication over TLS, I've noticed that while
> the primary server can restrict its supported encryption algorithms using
> the ssl_ciphers parameter, there doesn't seem to be a corresponding method
> for the standby (client) side of the replication connection. The standby
> appears to use all the default ciphers supported by the system's OpenSSL
> library.
>

What is a "standby (client)"?

Postgresql version: 15.2
>

That's missing 12 sets (three years) of bug fixes.  When using RPM or .deb
packages, updating takes only a few minutes.

-- 
Death to <Redacted>, and butter sauce.
Don't boil me, I'm still alive.
<Redacted> lobster!


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