Am Mi., 1. März 2023 um 10:49 Uhr schrieb Lukas Tribus <[email protected]>:

> On Wed, 1 Mar 2023 at 10:09, [email protected] <[email protected]> wrote:
> >
> > Hi,
> >
> > i've upgraded from HAProxy 2.4.15 (OS: Ubuntu 18.04) to 2.4.22 (OS:
> Ubuntu 22.04). Now the stick-table synchronization between peers isn't
> working anymore.
> >
> > The peers listener is completely not existing (lsof output).
> >
> > HAProxy config:
> >
> > peers LB
> >     peer s017.domain.local 192.168.120.207:1234
> >     peer s018.domain.local 192.168.120.208:1234
>
> Is it possible the kernel rejects the bind to those IP addresses after
> the OS upgrade?
>
> Can you bind to those ports with something like nc?
>
> nc -l -s 192.168.120.207 -p 1234
>
>
>
> Lukas
>

Hi Lukas,

yes, i can perfectly bind to those ports/ips. I've also rebooted the hosts
to rule out other possibly issues. I've found something in the haproxy logs:

haproxy[16083]: [WARNING]  (16083) : Removing incomplete section 'peers LB'
(no peer named 's017').

Maybe it's some sort of hostname/FQDN lookup "issue":

# hostname
s017

# hostname -f
s017.domain.local

In the HAProxy configuration i'm using the FQDN name, and it seems HAProxy
is just using the short hostname.

-------------------------
Mit freundlichen Grüßen / Best regards
Bjoern

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