Re: Post-RHEL-patch: application cannot connect to PostgreSQL on dolnxdb099pv:6526 (local access works)

Hi Laurenz

dolnxdb099pv ~]$ sudo firewall-cmd --list-ports
22/tcp 6526/tcp

dolnxdb099pv ~]$ sestatus
SELinux status: enabled
SELinuxfs mount: /sys/fs/selinux
SELinux root directory: /etc/selinux
Loaded policy name: targeted
Current mode: enforcing
Mode from config file: enforcing
Policy MLS status: enabled
Policy deny_unknown status: allowed
Max kernel policy version: 31

On Fri, Oct 2, 2026 at 8:28 AM Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>
wrote:

> On Fri, 2026-10-02 at 07:59 +0400, dbatoCloud Solution wrote:
> > Could you please check from your side whether the patching activity
> changed the host firewall,
> > SELinux state, or any security/network agent configuration on
> dolnxdb099pv?
>
> Sorry, but you will have to ask your system administrators.
> This mailing list is for questions your database administrators might have
> about running PostgreSQL.
>
> Yours,
> Laurenz Albe
>