[SR-Users] Failover with UCARP and Monit

[Daniel-Constantin Mierla]

An option is to use in the UCARP VIP up/down scripts the commands:

monit start kamailio
monit stop kamailio

Then monit will stop kamailio and no longer do options ping when the 
server is standby.

Cheers,
Daniel

On 2/17/11 2:05 PM, Klaus Feichtinger wrote:
> Hi,
>
> I have built a similar solution with only one difference: I am using
> HEARTBEAT instead of ucarp. In heartbeat it is possible moving
> "haresources" from one active host to another. So, I activate MONIT (and
> mysql + kamailio) only when the resources (e.g. virtual IP address) are
> switched from one host to the other.
>
> A sample config of heartbeat looks like:
>
> [...]
> Srv1 drbddisk::dbdata \
>       Filesystem::/dev/drbd0::/mnt/drbdfiles::ext3 \
>       10.0.0.1 mysql kamailio start-monit
> [...]
>
> Maybe you can use a pendant to these 'resources' in ucarp, too. I do not
> know any details.
>
> regard,
> Klaus
>
>> Hello,
>> I am setting up a high-availablilty kamailio system using UCARP to
>> failover between active and standby instances. To detect failure, we
>> intend to use Monit.
>> Monit can monitor the kamailio PID and start the process when needed
>> (Example on the wiki
>> http://www.kamailio.org/dokuwiki/doku.php/install:configure-initd-script)
>> and  it can also do OPTIONS pings to verify it is working. If the pings
>> fail  we will initiate a ucarp swap.
>>
>> However if the server is currently in standby, it does not have the V-IP
>>   address, so I don't want to run the OPTIONS pings (I think).
>>
>> Does anyone use a similar system and can provide an example of how
>> ucarp, monit and kamailio can work together?
>>
>> Many thanks,
>>
>> Hugh Waite
>>
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>
>
>
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-- 
Daniel-Constantin Mierla
http://www.asipto.com