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Dear lvs-user
A colleague pointed out, that I had forgotten to reply to the
group. I'm forwarding my reply to Julian below.
I will try sending a patch for the man page of ipvsadm to Simon Horman
an contact the guys from Keepalived for possible solutions/workarounds.
Regards
Matías
On 2013-12-17, at 11:08, Matías E. Fernández <matias.fernandez@xxxxxxx> wrote:
> Dear Julian
>
>> commit fc604767613b6d2036cdc35b660bc39451040a47
>> Author: Julian Anastasov <ja@xxxxxx>
>> Date: Sun Oct 17 16:38:15 2010 +0300
>
> Thank you for the hint. This means that the corresponding passage
> in the man page should be removed, shouldn't it? Should I send a
> patch? To whom?
>
>> My understanding is that Local method just
>> passed the packet to the local server listening on VIP, without
>> modification. The same is done by Route method.
>
> I can confirm that using the "Route" method with ipvsadm directly
> works as expected.
>
>> But I still
>> don't understand what actually breaks in Keepalived. OTOH, if
>> NAT method is used, the destination address/port in packet
>> is modified to match the real server. In such case the
>> local server listens on RIP:RPORT, not on VIP:VPORT.
>
> The problem with keepalived ist that lb_kind is used for all real_server
> and sorry_server in virtual_server. This means that if you configure
> lb_kind to NAT, the same forwarding method will be used for a a sorry_server
> that happens to be on the local node.
> In earlier versions this use to work, because the forwarding method of "Local"
> was set regardless of what may have been specified.
>
> For me it looks like the man page of ipvsadm should be corrected, and
> keepalived adapted to the new behaviour of ipvsadm.
>
> Thank you for the help.
>
> Regards
> Matías
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