Standardize list of required, recommended and optional OpenStack services for scs

[josephineSei]

As an operator, I want to know which OpenStack services are required to be scs-compatible, which services are recommend and supported/standardized by scs and which services the scs deem to be optional. So that I can build an scs-compatible cloud easier as the step of choosing OpenStack services is already mostly done and I do not have to go through all standards to create that list on my own.

As a user, I want to know, which services are always present in scs-compatible clouds, which are most likely there and do work the same over all clouds and for which services there may be differences between different CSPs. So as a user I know what difficulties might occur when migrating from one CSP to another.

Definition of Done:

• either a standard or another kind of documentation is created
• implications of enabling or disabling services are clearly described.

short Proposal:

Required

• Keystone
• Neutron
• Nova
• Placement
• Cinder
• Glance
• Horizon (What about Skyline? )

Recommended

• Barbican (will eventually be required)

Optional

• any other undecideded OpenStack Project

To be sorted

• Swift (maybe only optional as rbd yould be used as a replacement)
• Octavia
• Heat (currently requires old version of policies, questionable, whether it will conform to new policies eventually)
• CloudKitty
• Designate

Required/Recommended backend services

Do we also want to require or recommend services for the infrastructure like DB, chache, RPC?

[josephineSei]

I added a proposal in the Task description, so anyone can edit it. This list is important for other standards and to focus work on supported services by scs.

@garloff @fkr I would like your feedback and feedback of CSPs to edit and eventually have a final list of services.

[mbuechse]

As far as I recall, we talked about this during the 3rd community hackathon in November, and we decided that such a thing was hard to accomplish and the effort better spent otherwise.

[josephineSei]

closing as it is a duplicate of SovereignCloudStack/issues#528