openstack team mailing list archive

[Vishvananda Ishaya <vishvananda@xxxxxxxxx>]

We just recently merged a new HA networking option.  See details in my blog post here:

http://unchainyourbrain.com/openstack/13-networking-in-nova

Vish

On Jul 20, 2011, at 10:04 PM, Mike Scherbakov wrote:

> Hi, 
> Thank you for the work on making nova components HA.
> 
> Did you have a chance to move further in this topic?
> I especially interested in making nova-network HA and looking for possible active-active implementations,
> so the downtime of the service would me minimal.
> 
> Thank you,
> 
> On Tue, May 3, 2011 at 1:22 PM, Edward Konetzko <konetzed@xxxxxxxxxxxxxxxxx> wrote:
> I have attached the slides and Tushar Patil doc on making nova-network ha along with the etherpad notes on the bottom.
> 
> 
> I hope to follow this email up later on in the week with plans for a full reference document based on Cacti.  Thanks for everyone’s participation at the Summit.
> 
> Thanks
> Edward Konetzko
> 
> Etherpad notes
> 
> 
> This Etherpad is for the
> Discussion on Design & Software Considerations for Making Nova HA/Fault Tolerant
> Please put ideas or comments in the appropriate sections
> 
> 
> Database
> - Does zones alleviate the need for HAing the DB?
> 
> 
> 
> RabbitMQ
> For comparison http://wiki.secondlife.com/wiki/Message_Queue_Evaluation_Notes
> - Need to update managers to create persistant queues and messages
> - XMPP an alternate?
> Talk to RabbitMQ devs about
> - Long term can we use Burrow?
> 
> 
> Nova-Network
> NTT Data documentation mailed to openstack list for their heartbeat POC tests
> Are there issues running multiple network nodes and assigning the same IP to mutlple instances?
> How about VRRP protocol?
>   --> we (NTT) are planning to evaluate VRRP using keepalived or some other software. Does anyone knows suitable software?
> 
> 
> Nova-scheduler
> Vish said you can run more then one
> - Yeah with zones and how the scheduler is structured now, it can
> 
> 
> Nova-api
> Possibliy to run this behind real web server, apache, nginx
> 
> 
> Nova-volume
> 
> Nova-Objectstore
> 
> Nova-Compute
> 
> 
> Other ideas
> Services should use dns srv records or something to automate service discovery, this would make running large infrastructures and ipv6 configureation alot easier.
> - zeroconf?  -<-- like the idea but anyone can announce anything in zeroconf it has no idea of a master for security.
> Agreed
> Look at vrrp and keepalived
> 
> 
> Take aways
> Start Discussion with Rabbitmq
> Message Bus needs more investigation
> Discussion on how do we make messages have delievery
> Give feed back to end user, fail or pass just dont leave state in pending forever
> 
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> 
> 
> 
> -- 
> Mike Scherbakov
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