Rework image pull check in E2E tests

dimitar-kostadinov commented 4 months ago

How to categorize this PR?

/area testing /kind test

What this PR does / why we need it: Rework the image pull check in E2E tests. The image pull check now use root pod executor and runs the following commands on the Node where the registry Pod is running:

jq -j '.mounts[] | select(.destination=="/var/lib/registry") | .source' /run/containerd/io.containerd.runtime.v2.task/k8s.io/<registry-container-id>/config.json to get the location of '/var/lib/registry' mount on the Node.
cat <mount-location>/docker/registry/v2/repositories/<image-path>/_manifests/tags/<image-tag>/current/link to get the image index blob location.
jq -j '.manifests | length' %s/docker/registry/<image-index-blob-path>/blobs/%s/data to verify it is valid image index.

This will allow distroless to be used as the base registry image and will solve E2E flakes caused by the missing scheduler-state.json file.

Which issue(s) this PR fixes: Part of #3

Special notes for your reviewer: N/A

Release note:

NONE

ialidzhikov commented 3 months ago

/assign

gardener-prow[bot] commented 3 months ago

LGTM label has been added.

Git tree hash: 4424b599e6dbf846c7ad59f1194bd6278be60b20

gardener-prow[bot] commented 3 months ago

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ialidzhikov

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gardener / gardener-extension-registry-cache

Rework image pull check in E2E tests #196