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On 04/09/2012 05:02 AM, Martin Gerhard Loschwitz wrote:
> Am 04.04.12 09:28, schrieb Alex Glikson:
>> We have a prototype of similar capabilities targeting Nova services, using ZooKeeper (heartbeat/membership, leader election, etc -- will share with the community soon). Would be interesting to compare the two approaches.
>>
>> Regards,
>> Alex
>>
>>
>>
> Hello Alex,
>
> great to hear that! Comparing the two approaches will definetely be an
> interesting thing once we have comparable solutions for both methods
> available (i.e. glance or keystone integration for ZooKeeper or Nova in-
> tegration for Pacemaker).
>
> The reason I started with Glance and Keystone is the fact that I expect
> it to be particularly more difficult to catch all odds and ends when it
> comes to integrating Nova into Pacemaker. For example, verifying that
> a process called "nova-network" is running isn't difficult, but making
> sure that on the very same system exactly the network-configuration is
> in place (iptables-wise etc. pp.) that is necessary to consider
> nova-network running is a lot harder. I'm completely open if anyone has
> ideas on how to fiddle with this the best way :)
>
> Best regards
> Martin
>
For either approach,  would running the Services in HTTPD make it 
easier, harder, or no different to maintain HA?