openstack team mailing list archive

[Edward Konetzko <konetzed@xxxxxxxxxxxxxxxxx>]

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

Attachment: 20110426_Network_Node_HA.docx
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Attachment: NOVA_HA_v2.pdf
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