add zun stats api and cli
As docker support "docker stats <containerid>" to retrive the docker usage info, such as cpu, memory, net and block io usage info.
I think it's good for zun to have "zun stats <containerid>" to retrive container usage info.
Blueprint information
- Status:
- Complete
- Approver:
- hongbin
- Priority:
- Medium
- Drafter:
- Shunli Zhou
- Direction:
- Approved
- Assignee:
- Shunli Zhou
- Definition:
- Superseded
- Series goal:
- None
- Implementation:
-
Unknown
- Milestone target:
- None
- Started by
- Completed by
- hongbin
Related branches
Related bugs
Sprints
Whiteboard
@Shunli,
The docker stats command returns a live stream of resource usage statistics, which might not be easy for Zun to support the same. That is mainly because Zun API doesn't support streaming right now. Do you have an idea for implementation this feature? Perhaps briefly describe what you thought in here would be enough.
-- hongbin 2017-04-12
@hongbin,
No clear solution for live stream now, but at least we can support to retrive a snapshot of 'docker stats' at first. I will do some investigation later for live stream.
--Shunli 2017-04-13
@Shunli,
OK, I see. It is possible to retrieve a snapshot of stats, so it looks feasible enough to support. My major concern is the complexity of supporting "streaming" of stats but you clarified that it is out of the scope. Then, this proposal looks good to me.
-- hongbin 2017-04-14
@hongbin, @Shunli,
https:/
https:/
The pacth is committed in a few months ago. And it works.
-- Feng Shengqin 2017-04-24
@feng shengqin
Thanks for the patch. Seems i logged a duplicated BP. I will try it later and give my comments.
---Shunli Zhou 2017-04-25
