[lvs-users] SYN spiraling between master and slave IPVS balancers

Dmitry Akindinov dimak at stalker.com
Tue Mar 5 06:07:09 GMT 2013


On 2013-03-05 00:39, Julian Anastasov wrote:
> 	Hello,
> On Mon, 4 Mar 2013, Dmitry Akindinov wrote:
>>> http://www.ssi.bg/~ja/tmp/0001-ipvs-add-backup_only-flag-to-avoid-loops.txt
>> Thank you very much!
>> It's about ten days since we started to use on our servers kernel 3.8.0-28
>> (now 3.8.1-30) with your patch applied. So far, there are no signs of SYN
>> spiraling or other problems with using ipvs balancer nodes on our
>> multiprotocol real servers. It would be ver nice to have this feature in the
>> standard kernels.
> 	Yes, I'll do it in the next days.
> 	So, can I add your Tested-by in commit message?

It would be more right to add German Myzovsky <lawyer at sipnet.ru> as the 
tester. I'm just the coordinator.

> And I assume your tests were with backup_only=1, right?

Yes, slave balancers set this flag to 1. In the case of a cluster 
fail-over the newly elected master balancer clears that flag.

>> --
>> Best regards,
>> Dmitry Akindinov
> Regards
> --
> Julian Anastasov <ja at ssi.bg>

Best regards,
Dmitry Akindinov

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