Add stop-openstack-services.yml playbook

[Alex-Welsh]

Adds a new playbook to stop openstack services across the overcloud.

I was undecided as to whether this warrants its own playbook but I've needed to use it enough times now that I think other people might want it.

One function I was considering was a variable to change the docker stop to a docker restart which we could then redirect to in the case of the rabbitmq-reset.yml playbook.

[mnasiadka]

Maybe a stupid question, but what's wrong with kolla-ansible stop? ;-)

[markgoddard]

Maybe a stupid question, but what's wrong with kolla-ansible stop? ;-)

Slooooow

[mnasiadka]

Maybe a stupid question, but what's wrong with kolla-ansible stop? ;-)

Slooooow

Correct answer, should we rework that upstream as well?

[markgoddard]

Maybe a stupid question, but what's wrong with kolla-ansible stop? ;-)

Slooooow

Correct answer, should we rework that upstream as well?

How do you propose to do it?

[mnasiadka]

Maybe a stupid question, but what's wrong with kolla-ansible stop? ;-)

Slooooow

Correct answer, should we rework that upstream as well?

How do you propose to do it?
Maybe a similar playbook, just for those time constrained - but we would probably need a better mechanism for being able to tell which services need stopping - maybe a playbook with a tag per play? It's going to be slower than this, but probably faster than kolla-ansible stop currently.

[Alex-Welsh]

Maybe a stupid question, but what's wrong with kolla-ansible stop? ;-)

Slooooow

Correct answer, should we rework that upstream as well?

How do you propose to do it?
Maybe a similar playbook, just for those time constrained - but we would probably need a better mechanism for being able to tell which services need stopping - maybe a playbook with a tag per play? It's going to be slower than this, but probably faster than kolla-ansible stop currently.

Playbook with a tag per play that adds all the services to a list, then runs the stop all at once? Would be a lot faster than trying to stop them all individually.