Add service dependencies policy when restart the kolla-kubernetes cluster

Registered by Kevin Zhao on 2018-01-17

Now after deploy the OpenStack cluster with Kolla-kubernetes, when user need to restart the cluster, the deployment service don't follow a guide to start in proper order, that will induce the deployment failed and we could not use the OpenStack after restarting.

So it is better to add start policy, to let several service have dependencies.
For example:
We need to let the mariadb and openvswitch as a denpendency of memcached, so when start memcached, it will first check whether the mariadb or openvswitch already start, then start memcached.
If either mariadb or openvswitch don't start, will first start mariadb or openvswitch and then start memcached.

Blueprint information

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

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