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From Andrija Panic <andrija.pa...@gmail.com>
Subject Re: database high availability question vs haproxy
Date Thu, 04 Jun 2015 14:08:30 GMT
Anyone :) ?

On 31 May 2015 at 00:26, Andrija Panic <andrija.panic@gmail.com> wrote:

> Hi,
>
> I would have a question on database HA feature in db.properties (
> http://cloudstack-administration.readthedocs.org/en/latest/reliability.html#configuring-database-high-availability
> )
>
> If I understand correctly, it is up to the admin to provide appropriate
> mysql HA (active-active, galera, etc) and ACS management server will  JUST
> try to connect to slaves if the master is down ?
>
> We are running Galera, with haproxy/keepalived, and by using stoping
> haproxy, it takes i.e. 6sec for keepalived to detect haproxy is down, and
> failover IP to another host.
>
> During these 6 seconds, ACS managemnt server goes dead, because of this DB
> unavailability.
>
> So my wondering, is better to use ACS db HA feature, instead of
> loadbalancer for this specific purpose ?
> (we are also using haproxy/keepalived for management server loadbalancing
> - 2 servers in backend...)
>
> Any experience shared is really appreciated !
> --
>
> Andrija Panić
>



-- 

Andrija Panić

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