Hmm, I see. There's this spec[1] that was discussed in the past with a similar proposal. There's a SPEC with some other points on the discussion, I think Janice forgot to mention.
Erlon [1] https://review.openstack.org/#/c/176233/ [2] https://review.openstack.org/#/c/258968/ On Tue, Dec 22, 2015 at 12:16 PM, Michał Dulko <[email protected]> wrote: > 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 >
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