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OSDOCS-15331 OSUS single stream release additional text #96185

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OSDOCS-15331 OSUS single stream release additional text #96185

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4 changes: 4 additions & 0 deletions modules/update-service-overview.adoc
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Expand Up @@ -17,6 +17,10 @@ keep your cluster up to date with the most recent compatible components.

To allow the OpenShift Update Service to provide only compatible updates, a release verification pipeline drives automation. Each release artifact is verified for compatibility with supported cloud platforms and system architectures, as well as other component packages. After the pipeline confirms the suitability of a release, the OpenShift Update Service notifies you that it is available.

The OpenShift Update Service (OSUS) supports a single-stream release model, where only one release version is active and supported at any given time. When a new release is deployed, it fully replaces the previous release.

The updated release provides support for upgrades from all {product-title} versions starting after 4.10 up to the new release version.
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It means the latest released osus support v4.10+ ocp versions, right? Currently, the supported ocp version from osus build config is 4.8, while 4.12 is the oldest supported ocp version in eus term2. Not sure whether 4.8 or 4.12 is more suitable to replace 4.10.

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@jiajliu I've been told that 4.10 is correct because of some api removals, etc. It does not have to do with OCP versions. They want to support as far back as they can.

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@jiajliu jiajliu Jul 21, 2025 •
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LABEL com.redhat.openshift.versions=v4.8

^^ is the current configuration in osus dockerfile. It indicates that the furthest supported ocp version is 4.8(actually it's EOL), the inconsistency between the documentation and the product might make confusion to users. I did not hear that we planned to update the dockerfile to 4.10 in next release. Maybe we should confirm with dev on the inconsistency.


[IMPORTANT]
====
The OpenShift Update Service displays all recommended updates for your current cluster. If an update path is not recommended by the OpenShift Update Service, it might be because of a known issue related to the update path, such as incompatibility or availability.
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