While extracting the cluster's release image using the jq tool from JSON output, an uninitialized variable was mistakenly used as the version number string constant. This caused jq to fail to match any version numbers correctly, resulting in an empty extraction. Consequently, the expected image could not be extracted, resulting in an empty image.

    4.16

    Always.

    1.Prepare an Azure OpenShift cluster.
    2.Migration to Azure AD workload Identity using procedure https://github.com/openshift/cloud-credential-operator/blob/master/docs/azure_workload_identity.md#steps-to-in-place-migrate-an-openshift-cluster-to-azure-ad-workload-identity.
    3.Failed on step8: Extract CredentialsCrequests from the cluster's release image for the given version.

Could not extract the expected image, actually it is an empty image.

$ CLUSTER_VERSION=`oc get clusterversion version -o json | jq -r '.status.desired.version'` 
$ RELEASE_IMAGE=`oc get clusterversion version -o json | jq -r '.status.history[] | select(.version == "VERSION_FROM_PREVIOUS_COMMAND") | .image'`     

The variable should be properly initialized with the correct version number string. This ensures that jq can accurately match the version number and extract the correct image information.

$ CLUSTER_VERSION=`oc get clusterversion version -o json | jq -r '.status.desired.version'`
$ RELEASE_IMAGE=`oc get clusterversion version -o json | jq -r '.status.history[] | select(.version == "'$CLUSTER_VERSION'") | .image'`

# Obtain release image from the cluster version. Will not work with pre-release versions.

$ CLUSTER_VERSION=`oc get clusterversion version -o json | jq -r '.status.desired.version'`

(Error)$ oc get clusterversion version -o json | jq -r '.status.history[] | select(.version == "VERSION_FROM_PREVIOUS_COMMAND") | .image'

$ oc get clusterversion version -o json | jq -r '.status.history[] | select(.version == "'$CLUSTER_VERSION'") | .image'
registry.ci.openshift.org/ocp-arm64/release-arm64@sha256:c605269e51d60b18e6c7251c92355b783bac7f411e137da36b031a1c6f21579b