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Overview
DevStack has evolved to support a large number of configuration options and alternative platforms and support services. That evolution has grown well beyond what was originally intended and the majority of configuration combinations are rarely, if ever, tested. DevStack is not a general OpenStack installer and was never meant to be everything to everyone.
Below is a list of what is specifically is supported (read that as "tested") going forward.
Supported Components
Base OS
The OpenStack Technical Committee (TC) has defined the current CI strategy to include the latest Ubuntu release and the latest RHEL release.
- Ubuntu: current LTS release plus current development release
- Fedora: current release plus previous release
- RHEL/CentOS: current major release
- Other OS platforms may continue to be included but the maintenance of those platforms shall not be assumed simply due to their presence. Having a listed point-of-contact for each additional OS will greatly increase its chance of being well-maintained.
- Patches for Ubuntu and/or Fedora will not be held up due to side-effects on other OS platforms.
Databases
As packaged by the host OS
- MySQL
Queues
As packaged by the host OS
- Rabbit
Web Server
As packaged by the host OS
- Apache
OpenStack Network
- Neutron: A basic configuration approximating the original FlatDHCP mode using linuxbridge or OpenVSwitch.
Services
The default services configured by DevStack are Identity (keystone), Object Storage (swift), Image Service (glance), Block Storage (cinder), Compute (nova), Networking (neutron), Dashboard (horizon)
Additional services not included directly in DevStack can be tied in
to stack.sh using the plugin mechanism <plugins> to call scripts that
perform the configuration and startup of the service.
Node Configurations
- single node
- multi-node configurations as are tested by the gate
Exercises
The DevStack exercise scripts are no longer used as integration and gate testing as that job has transitioned to Tempest. They are still maintained as a demonstrations of using OpenStack from the command line and for quick operational testing.