enable to segment

Registered by suzhengwei on 2019-12-24

It has serveral compute nodes in our cloud env, and they are set in the
same segment. We usually pull the latest code or change hardware for test.
Every time when updating, we have to kill all masakari services after
masakari-monitors, so that it wouldn't trigger ha recovery.

Once upon a time, we forgot to kill all masakari services when updating,
and terriable thing happened. It triggered VMs ha, but many instances
evacuated failed. When the compute nodes re-active, the instance can't
be handly recovery, bacause bdm info of the instances was incorrect while
evcuations failed.

So we need a solution to simply and easily close and open ha in specific
case.

Blueprint information

Status:
Not started
Approver:
None
Priority:
Undefined
Drafter:
suzhengwei
Direction:
Needs approval
Assignee:
suzhengwei
Definition:
New
Series goal:
None
Implementation:
Unknown
Milestone target:
None

Related branches

Sprints

Whiteboard

Gerrit topic: https://review.opendev.org/#/q/topic:bp/enable-to-segment

Addressed by: https://review.opendev.org/705893
    spec for dd option to enable/disable a segment

Addressed by: https://review.opendev.org/700879
   add enabled to segment

Addressed by: https://review.opendev.org/731012
    update docs for enabled to segment

(?)

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