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Date: Fri, 31 Jan 2025 09:07:13 -0800
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Subject: Re: could not accept ssl connection tlsv1 alert unknown ca
To: "Zwettler Markus (OIZ)" <Markus.Zwettler@zuerich.ch>,
 Tom Lane <tgl@sss.pgh.pa.us>,
 "pgsql-general@lists.postgresql.org" <pgsql-general@lists.postgresql.org>
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From: Adrian Klaver <adrian.klaver@aklaver.com>
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On 1/31/25 08:57, Zwettler Markus (OIZ) wrote:

> bash-4.4$ cat pg_hba.conf
> # Do not edit this file manually!
> # It will be overwritten by Patroni!
> local all "postgres" peer
> hostssl replication "_crunchyrepl" all cert
> hostssl "postgres" "_crunchyrepl" all cert
> host all "_crunchyrepl" all reject
> host all "ccp_monitoring" "127.0.0.0/8" scram-sha-256
> host all "ccp_monitoring" "::1/128" scram-sha-256
> host all "ccp_monitoring" all reject
> hostssl all all all md5

 From here:

https://www.postgresql.org/docs/17/ssl-tcp.html#SSL-CLIENT-CERTIFICATES

"There are two approaches to enforce that users provide a certificate 
during login.

The first approach makes use of the cert authentication method for 
hostssl entries in pg_hba.conf, such that the certificate itself is used 
for authentication while also providing ssl connection security.


[...]

The second approach combines any authentication method for hostssl 
entries with the verification of client certificates by setting the 
clientcert authentication option to verify-ca or verify-full.  ...
"

Is the client having issues trying a connection that matches either of 
the lines below?:

hostssl replication "_crunchyrepl" all cert
hostssl "postgres" "_crunchyrepl" all cert

> 
> 
> 

-- 
Adrian Klaver
adrian.klaver@aklaver.com