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In article <4382A469.4030605@xxxxxxx> you wrote:
>
>
> Horms wrote:
>
>>Ranga Nathan <kairanga@xxxxxxx> wrote:
>>
>>
>>>Horms wrote:
>>>
>>>
>>>
>>>>Ranga Nathan <kairanga@xxxxxxx> wrote:
>>>>
>>>>
>>>>
>>>>
>>>>>Karl Kopper's Linux Enterprise Cluster talks about the availability of
>>>>>a kernel patch to failback from the backup to the master that keeps the
>>>>>connections alive.
>>>>>I could not find it on the linuxvirtualserver.org site. I see the latest
>>>>>versions but they are in source format. Somehow I am unable to do rpm
>>>>>--rebuild <sourcerpm>
>>>>>
>>>>>The current version I have is: ipvsadm v1.24 2003/06/07 (compiled with
>>>>>getopt_long and IPVS v1.2.0)
>>>>>
>>>>>
>>>>>
>>>>>
>>>>Could you be a little more specific about the patch
>>>>(or at least give a page refernce in the book).
>>>>
>>>>
>>>>
>>>>
>>>It is the NOTE at the bottom of p276 (Stateful Failover of the IPVS Table)
>>>
>>>
>>>
>>>>I am suspecting that this patch is no longer needed.
>>>>
>>>>
>>>>
>>>>
>>>When it fails over, the connections are retained. When it fails back,
>>>the connections are broken.
>>>I simulated this by rebooting (this is my lab machine!) the directors.
>>>
>>>
>>
>>Ok, I'm still a little confused, but I think what he is talking
>>about is being able to run the master and backup daemons on
>>both linux-directors at the same time. That patch was merged
>>into the kernel a while ago now, and the chances are that
>>you can do this without patching. To test, try running:
>>
>>ipvsadm --start-daemon master
>>ipvsadm --start-daemon backup
>>
>>
> I am sorry, I did not explain very well. My language is not very
> technical :-) I did what you suggested before. From master to backup
> the failover worked fine. I did not lose any connections. From backup,
> when the master (after a reboot) snatched back the nodes, the
> connections dropped. I am sure that when the master came backup, it
> started the daemon, as I had "--start-daemon master" in the
> /etc/ipvsadm.rules. I confirmed this by doing "ipvsadm --start-daemon
> master" on the master and it said "Daemon has already run". I could not
> query if it is in "master" status. I presumed so.
>
> I there a way for the master and backup swap dynamically when snatching
> the nodes?
>
>>Which if it works, will improve things somewhat.
>>
>>
>>
--
Horms
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