Zalando Postgres-Operator on Ubuntu vs Redhat Linux ?

[BigGithubFan]

Dear Zalando PGO experts,

I am new to Zalando PGO, and followed the this link https://github.com/zalando/postgres-operator/blob/master/docs/quickstart.md to install Zalando PGO on my Kubernetes on Redhat 8.
After all PGO and UI have been installed ,
I created a Postgres cluster with this example yaml (but I selected 14 as my Postgresql vesion) :
kubectl create -f manifests/minimal-postgres-manifest.yaml

when I logged in to the server via psql, I noticed it's for Ubunutu:
#select version();
version

PostgreSQL 14.7 (Ubuntu 14.7-1.pgdg22.04+1) on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 11.3.0-1ubuntu1~22.04) 11.3.0, 64-bit
(1 row)

But my Linux server is Redhat 8. So I wonder if I could select Linux flavor and version in minimal-postgres-manifest.yaml ?

P.S. from this https://github.com/topics/patroni?o=asc&s=stars , it looks like Patroni should support Redhat Linux, I assume Zalando PGO should support as well. If that's the case, should I do some settings/configuration during the deployment so that Zalando PGO and the Postgres cluster are dedicated to Redhat Linux ?

Thanks in advance !

[BigGithubFan]

@FxKu any thoughts on this question ?