High availability virtual ip

High availability virtual ip

Itay Donenhirsch itay at bazoo.org
Wed Jun 24 08:11:36 IDT 2009


Well, you can not trust an HA system that either works great or fails
bitterly :) Someone told me that it was primarily designed for 1+1
systems, but I don't believe it can do this task as well.

On Tue, Jun 23, 2009 at 4:04 PM, Maxim Veksler<hq4ever at gmail.com> wrote:
> On Tue, Jun 23, 2009 at 9:01 AM, Itay Donenhirsch <itay at bazoo.org> wrote:
>>
>> Hi Folks,
>>
>> I would recommend not using Linux-HA for any means. I had very bitter
>> experience with it. It is implemented in a very complicated and hard
>> to debug and configure. It's also very poorly tested. I first didn't
>> believe it myself and thought I was doing something wrong, but after
>> some email exchanges with its developer it became apparent that it
>> fails some very basic scenarios (like switch power-down for instance).
>> Moreover, the linux-ha people themselves will confuse you with which
>> version to use (2.99/2.1.4, heartbeat or pacemaker, etc).
>>
>> If you'd like more detailed explanation, or had different experience,
>> you are more than welcome to email me.
>>
>
> Heartbeat has 2 faces, It can work great or it can fail bitterly.
> It has a very steep learning curse before something useful begins to happen.
>
> cibadmin -Q, crm_attribute are your friends.
>
> I agree with Itay, from our experience it is indeed buggy but working.
>
>
> Maxim.
>
>> Itay
>>
>> On Tue, Jun 16, 2009 at 9:55 PM, Oleg Goldshmidt<pub at goldshmidt.org> wrote:
>> > Marc Volovic <marcvolovic at me.com> writes:
>> >
>> >> Hi
>> >>
>> >> First, the problem is not an IP, but the mac-ip mapping and ARP
>> >> caching strategies.
>> >>
>> >> Second, don't use ping.
>> >>
>> >> Third, do use project 'heartbeat' and 'fake'. They provide what you
>> >> need.
>> >
>> > Heartbeat is a component of Linux-HA, which is why I pointed to the
>> > latter ;-)
>> >
>> > http://www.linux-ha.org/Heartbeat
>> >
>> > --
>> > Oleg Goldshmidt | pub at goldshmidt.org
>> >
>> > _______________________________________________
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>> > Linux-il at cs.huji.ac.il
>> > http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
>> >
>>
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>
>
>
> --
> Cheers,
> Maxim Veksler
>
> "Free as in Freedom" - Do u GNU ?
>



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