[kolla] Feedback request: removing ceph deployment

Mark Goddard mark at stackhpc.com
Wed Jun 5 09:10:53 UTC 2019


We discussed during the kolla virtual PTG [1] the option of removing
support for deploying Ceph, as a way to improve the long term
sustainability of the project. Ceph support in kolla does require
maintenance, and is not the core focus of the project. There are other
good tools for deploying Ceph (ceph-deploy, ceph-ansible), and Kolla
Ansible supports integration with an external Ceph cluster deployed
using these or other methods.

To avoid leaving people in a difficult position, we would recommend a
deployment tool (probably ceph-ansible), and provide an automated,
tested and documented migration path to it.

Here is a rough proposed schedule for removal:

* Train: deprecate Ceph deployment, add CI tests for kolla-ansible
with ceph-ansible
* U: Obsolete Ceph deployment, provide migration path to ceph-ansible
* V: Remove Ceph deployment

Please provide feedback on this plan and how it will affect you.


[1] https://etherpad.openstack.org/p/kolla-train-ptg

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