Feature #46182: cephadm should use the same image reference across the cluster - Orchestrator - Ceph

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Feature #46182

closed

cephadm should use the same image reference across the cluster

Added by Ken Dreyer almost 4 years ago. Updated over 3 years ago.

Status:

Resolved

Priority:

High

Assignee:

Sebastian Wagner

Category:

Target version:

% Done:

Source:

Tags:

Backport:

octopus

Reviewed:

Affected Versions:

Pull request ID:

36432

Description

The documentation has this warning (from https://docs.ceph.com/docs/octopus/install/containers/#containers):

Important Using the :latest tag is discouraged. If you use the :latest tag, there is no guarantee that the same image will be on each of your hosts. Under these conditions, upgrades might not work properly. Remember that :latest is a relative tag, and a moving target.
Instead of the :latest tag, use explicit tags or image IDs. For example:

podman pull ceph/ceph:v15.2.0

This is an administrative burden on the user to always look up and bump the number, and it's an additional human action that can go wrong.

ceph-ansible solved this by resolving the image's floating tag to a sha256 ref one time, and then deploying that same ref to all nodes. cephadm should be able to do something similar.