Zun

--cluster-store does not work with Docker 23

Bug #2007142 reported by Michal Nasiadka
28
This bug affects 5 people
Affects Status Importance Assigned to Milestone
Zun
Fix Released
Critical
hongbin

Bug Description

Docker 23.0 is out and it does not support --cluster-store.
What is the required configuration to get Zun working with Docker 23?

Revision history for this message
hongbin (hongbin034) wrote :

Zun uses kuryr-libnetwork, which relies on the --cluster-store option. There is no obvious workaround without this option.

The mitigation is to pin an older version of docker (like what we did to unblock the CI: https://review.opendev.org/c/openstack/zun/+/875203

The long-term solution is to migrate to containerd with CNI network model.

Changed in zun:
assignee: nobody → hongbin (hongbin034)
status: New → Triaged
importance: Undecided → High
Revision history for this message
Jan Gutter (jangutter) wrote :

Unfortunately the mitigation isn't working for Debian Bookworm, which means kolla-ansible will have to drop Zun support for Bookworm until this issue is resolved.

https://review.opendev.org/c/openstack/kolla-ansible/+/894573

Revision history for this message
hongbin (hongbin034) wrote :

ACK. The goal is to fix it in "C" release.

hongbin (hongbin034)
Changed in zun:
importance: High → Critical
Changed in zun:
status: Triaged → In Progress
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to zun (master)

Reviewed: https://review.opendev.org/c/openstack/zun/+/903884
Committed: https://opendev.org/openstack/zun/commit/19f6d7854de9a0b5e65ee97e21122c171ab66f64
Submitter: "Zuul (22348)"
Branch: master

commit 19f6d7854de9a0b5e65ee97e21122c171ab66f64
Author: Hongbin Lu <email address hidden>
Date: Mon Dec 18 12:39:34 2023 +0000

    Switch to "local" mode for kuryr libnetwork scope

    Docker has removed external cluster store in latest version.
    Therefore, we switch to "local" mode to work around.

    Closes-Bug: #2007142
    Change-Id: I31d140a75dae2ddd23551e648d0492327a8d8c8e

Changed in zun:
status: In Progress → Fix Released
Revision history for this message
harrysalt (harrysalt) wrote :

It seems like you're discussing an issue related to Zun, specifically regarding the use of kuryr-libnetwork, the --cluster-store option, and a workaround involving pinning an older version of Docker. Additionally, there's mention of a long-term solution to migrate to containerd with the CNI network model. Here's a breakdown of the information by https://openingtoclosehours.com/:

Issue Summary:

Problem: Zun is dependent on kuryr-libnetwork, which relies on the --cluster-store option in Docker.
Workaround: A temporary solution involves pinning an older version of Docker. This workaround was used to unblock the CI (Continuous Integration).
Long-term Solution: The plan is to migrate to containerd with the CNI (Container Network Interface) network model.
Specific Changes in Zun:

Assignee: The issue has been assigned to "hongbin (hongbin034)."
Status Transition: The issue has moved from "New" to "Triaged."
Importance: The importance of the issue has been raised from "Undecided" to "High."
Additional Information:

There is a reference to a specific change made in Zun (https://review.opendev.org/c/openstack/zun/+/875203) where an older version of Docker was pinned to unblock the CI.
Long-term Solution:

The plan for a permanent solution involves migrating away from Docker to containerd, implementing the CNI network model.
In summary, it appears that the development team is actively working on addressing the issue by both implementing a temporary workaround and planning a more sustainable long-term solution by transitioning to containerd with the CNI network model. The issue has been triaged and marked as high importance. The assigned person is Hongbin, and there's a reference to a specific change that temporarily addressed the problem in the CI environment.

Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix included in openstack/zun 13.0.0.0rc1

This issue was fixed in the openstack/zun 13.0.0.0rc1 release candidate.

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