Create a /healthcheck_api and /healthcheck_registrty endpoints
Objective: implement a healtcheck endpoint similar at the one implemented on Swift
As a cloud operator, in a HA environment I would like to know the status of my glance services via health checks
1. Create a /healthcheck_api end point that would made it possible to be monitored via HAProxy or alike
It should verify two things :
* healthcheck_
* api can communicate with all stores listed in known_stores
2. Create a /healthcheck_
It should verify :
* communication with database is possible
Blueprint information
- Status:
- Not started
- Approver:
- None
- Priority:
- Undefined
- Drafter:
- None
- Direction:
- Needs approval
- Assignee:
- Yanis Guenane
- Definition:
- New
- Series goal:
- None
- Implementation:
-
Unknown
- Milestone target:
- None
- Started by
- Completed by
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Currently I can think there is a key different between swift and Glance is that Glance has some dedicated backends but swift. So when swift 'healthcheck' return "ok" status means it is full operational, but I think it will be very hard (or say impossible) to implement your "healthcheck" for current Glance, since you need to make sure backend which Glance configured under "ok" status. Current Glance store driver has only some interfaces on "data-plane" but "control-plane", so hard to do "healthcheck" with backend. -- zhiyan
I'm still getting comfortable with this idea. Would it make sense to include something like this in an admin-only api (so we don't have to document it for customer-users) ?
Also, how is this approach better than the ad-hoc ways you can do this now? (Fetch a small image, get image details)
Thanks
markwash more-info 2014-03-14
I think the recommended way to do this is to just create a dummy tenant with some dummy images in it, and for your healthcheck perform typical user actions on those. Perhaps if there are problems with that approach we can resurrect this bp?
markwash rejected 2014-04-04
