Zun

[kolla-ansible] deploy Zun with Cinder Ceph support

Bug #1848934 reported by Radosław Piliszek on 2019-10-20

This bug affects 4 people

	Status	Importance	Assigned to
Zun	New	Undecided	hongbin
kolla-ansible	Fix Released	Wishlist	Jie Li
Ussuri	In Progress	Wishlist	Jie Li

Bug Description

Kolla Ansible should deploy Zun with Cinder Ceph support working out-of-the-box as it does for nova now.

This is more complicated than iSCSI due to RBD mapping done by host's kernel.
There are two pending ceph issues, both arise from dependency on kernel's rbd module:

- host's udev has no idea where to link rbd device unless it also has ceph-common installed (needs udev rule and a helper program with its accompanying libs - no clean solution except installing it on host)
- Cinder creates rbd volumes using the latest features while the kernel client most likely lags behind and needs a downgrade which Cinder does not currently support afaik (unless we downgrade every but this makes it less performant for the rest of the stack)

Additionally Zun (zun-compute) must access Cinder's ceph config and keyring.

refactored-from: https://bugs.launchpad.net/kolla/+bug/1797448

See original description

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Revision history for this message

Radosław Piliszek (yoctozepto) wrote on 2019-10-20:

Added reference to Zun - maybe we could address these issues in Ussuri but I believe we still need support from Zun and/or Cinder.

summary:	- deploy Zun with Cinder Ceph support + [kolla-ansible] deploy Zun with Cinder Ceph support
description:	updated

Revision history for this message

OpenStack Infra (hudson-openstack) wrote on 2020-01-19: Fix proposed to kolla-ansible (master)

Fix proposed to branch: master
Review: https://review.opendev.org/703274

Changed in kolla-ansible:
assignee:	nobody → Jie Li (ramboman)
status:	Triaged → In Progress

hongbin (hongbin034) on 2020-07-13

Changed in zun:
assignee:	nobody → hongbin (hongbin034)

Revision history for this message

Buddhika Sanjeewa (bsanjeewa) wrote on 2022-01-14:

What is the status of the proposed fix? I see that it is not touched for a year.
If the patch is abandoned, I would like to propose a patch.
But my solution seems a bit different than this.
It is to enable zun to use cinder volumes when external ceph is used for cinder.
Currently I have an issue to access cinder volumes from zun, but without volumes zun runs fine.
Shall I submit the patch?

Revision history for this message

Radosław Piliszek (yoctozepto) wrote on 2022-01-14:

The proposed patch is not a proper fix. Submit the patch and we will review it.

Revision history for this message

OpenStack Infra (hudson-openstack) wrote on 2022-01-14:

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/kolla-ansible/+/824722

Revision history for this message

OpenStack Infra (hudson-openstack) wrote on 2022-02-03: Fix merged to kolla-ansible (master)

Reviewed: https://review.opendev.org/c/openstack/kolla-ansible/+/824722
Committed: https://opendev.org/openstack/kolla-ansible/commit/eb7e0f6fdac86ea9501b98e6e71554b024bffe96
Submitter: "Zuul (22348)"
Branch: master

commit eb7e0f6fdac86ea9501b98e6e71554b024bffe96
Author: Buddhika Sanjeewa <email address hidden>
Date: Fri Jan 14 14:42:20 2022 +0000

Deploy Zun with Cinder Ceph support

    Enables zun to access cinder volumes when cinder is configured to use
    external ceph.
    Copies ceph config file and ceph cinder keyring to /etc/ceph in
    zun_compute container.

Closes-Bug: 1848934
Change-Id: Ie56868d5e9ed37a9274b8cbe65895f3634b895c8

Changed in kolla-ansible:
status:	In Progress → Fix Released

Revision history for this message

OpenStack Infra (hudson-openstack) wrote on 2022-02-03: Fix proposed to kolla-ansible (stable/xena)

Fix proposed to branch: stable/xena
Review: https://review.opendev.org/c/openstack/kolla-ansible/+/827649

Revision history for this message

OpenStack Infra (hudson-openstack) wrote on 2022-02-08: Fix merged to kolla-ansible (stable/xena)

Reviewed: https://review.opendev.org/c/openstack/kolla-ansible/+/827649
Committed: https://opendev.org/openstack/kolla-ansible/commit/920089c9fab3bc32356419c03a9f977b69708cc6
Submitter: "Zuul (22348)"
Branch: stable/xena

commit 920089c9fab3bc32356419c03a9f977b69708cc6
Author: Buddhika Sanjeewa <email address hidden>
Date: Fri Jan 14 14:42:20 2022 +0000

Deploy Zun with Cinder Ceph support

    Enables zun to access cinder volumes when cinder is configured to use
    external ceph.
    Copies ceph config file and ceph cinder keyring to /etc/ceph in
    zun_compute container.

    Closes-Bug: 1848934
    Change-Id: Ie56868d5e9ed37a9274b8cbe65895f3634b895c8
    (cherry picked from commit eb7e0f6fdac86ea9501b98e6e71554b024bffe96)