On 12/22/2015 01:29 PM, Erlon Cruz wrote: > Hi Li, > > Can you give a quick background on servicegroups (or links to. The > spec you linked only describe the process on Nova to change from what > they are using to tooz)? Also, what are the use cases and benefits of > using this? > > Erlon >
This is simply and idea to be able to use something more sophisticated than DB heartbeats to monitor services states. With Tooz implemented for that we would be able to use for example ZooKeeper to know about service failure in a matter of seconds instead of around a minute. This would shrink the window in which c-sch doesn't-know-yet that c-vol failed and sends RPC messages to a service that will never answer. I think there are more use cases related to service monitoring and failover. Service groups isn't probably a correct name for proposed enhancement - we have this concept somehow implemented, but proposed idea seems to be related to making it pluggable. __________________________________________________________________________ OpenStack Development Mailing List (not for usage questions) Unsubscribe: [email protected]?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
