Confirm Upload Purging Config on Registry Pods

Context

Upload purging is a registry cleanup process which removes partially deleted blob uploads. This process is not suitable for running on production due to: gitlab-org/container-registry#216 and gitlab-org/container-registry#217.

Problem

Upload purging is apparently disabled in the registry storage configuration: https://gitlab.com/gitlab-com/gl-infra/k8s-workloads/gitlab-com/-/blob/master/releases/gitlab-secrets/helmfile.yaml#L182, but it appears to be running on production: https://log.gprd.gitlab.net/app/discover#/?_g=h@a91e569&_a=h@07f3172 and contributing to a significant memory leak: https://console.cloud.google.com/profiler;timespan=30m/gitlab-registry;type=HEAP/inuse_space?project=gitlab-production&pli=1

Upload purging is enabled by default, so it must be explicitly disabled.

Proposal

Manually inspect the registry pods to see what the rendered configuration looks like in order to ultimately determine how to disable this feature in production.