|
It appears my link was stripped. The configuration is described here:
http://gcharriere.com/blog/?p=339
elliott barrere | 206.351.3520
On Sep 22, 2014, at 1:04 PM, Elliott Barrere <elliott@xxxxxxxxxx> wrote:
> Hi guys -
>
> I'm having an issue with a 2-node setup (similar setup to what's described
> here) where established sessions to a particular real server don't fail over
> when that real server fails. That is, if a connection exists in the LVS
> connection state table and that real server goes down, the connections to
> that real server persist, rather than being cleared from the table as I would
> expect.
>
> My test in a little more detail:
>
> 1) Start my service on realserver1 ONLY and open a connection (thus forcing a
> connection to realserver1)
> 2) Stop the service on realserver1 and start it on realserver2, verifying
> "ipvsadm -Ln" shows realserver1 down and realserver2 up
> 3) Establish a "new" connection to the VIP, forcing the same source port & IP
> with nc
> 4) The connection fails, trying to connect to realserver1 (verified by
> tcpdump)
>
> It appears that this is because the state table still contains an entry for
> "SRCIP:SRCPORT VIP:DSTPORT realserver1:DSTPORT". I am new to LVS, but I
> assume this is not the expected behavior, because it seems it would be a
> fairly typical scenario if both load balancers were, for example, behind a
> PAT firewall.
>
> Can anyone shed some light on this, and how I might possibly fix it? I am
> new to LVS so any help is appreciated!
>
> Cheers -
>
> elliott barrere | 206.351.3520
>
> _______________________________________________
> Please read the documentation before posting - it's available at:
> http://www.linuxvirtualserver.org/
>
> LinuxVirtualServer.org mailing list - lvs-users@xxxxxxxxxxxxxxxxxxxxxx
> Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
> or go to http://lists.graemef.net/mailman/listinfo/lvs-users
_______________________________________________
Please read the documentation before posting - it's available at:
http://www.linuxvirtualserver.org/
LinuxVirtualServer.org mailing list - lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
or go to http://lists.graemef.net/mailman/listinfo/lvs-users
|
