Run KEDA E2E with the Kubernetes Agent backend - #24671
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Clarified the implementation details regarding Kubernetes node support.
Reading self.metadata['kubernetes'] unguarded turned a missing metadata block into a bare KeyError, so an environment that selects agent_type 'kubernetes' without the accompanying mapping failed with 'Unable to start the Agent: kubernetes' and gave a raw traceback from ddev env shell, which only handles CalledProcessError. Validate the mapping where it is read so the failure names the missing contract instead.
start() stamped PREPARED_MARKER after _restart_agent_process(), so a container replaced during the restart was marked prepared. The marker lives in the container filesystem and the pod declares no volumes, so a replacement loses the copied conf.yaml, auto_conf.yaml and the editable installs, while _wait_for_agent() still succeeds against the fresh container. Every later _require_prepared() check then passed and tests silently exercised the Agent-shipped integration with no configuration. Stamp the marker once preparation is complete and assert it after the restart, matching the invariant restart() already relies on. Checking after the stamp instead would only observe the gap between the two commands.
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What does this PR do?
Migrates the KEDA Kind E2E to the Kubernetes Agent backend introduced in #24639. The check now reaches KEDA through the in-cluster Service DNS endpoint,
http://keda-operator-metrics-apiserver.keda.svc.cluster.local:8080/metrics, and returns the Kind kubeconfig in the Kubernetes backend metadata. This removes the external Docker Agent and persistentkubectl port-forwardwhile preserving the existing setup, waits, instance shape, assertions, and timeouts.Validation:
cd ddev && hatch run -- ddev --no-interactive test -fs keda(passed)cd ddev && hatch run -- ddev --no-interactive test --lint keda(passed)cd ddev && hatch run -- ddev --no-interactive test keda(2 passed, 1 E2E skipped)cd ddev && hatch run -- ddev env start --dev keda py3.13-2.16.0(passed)cd ddev && hatch run -- ddev env test --dev keda py3.13-2.16.0(1 passed, 2 deselected)cd ddev && hatch run -- ddev env stop keda py3.13-2.16.0(passed)Motivation
Exercise KEDA from the same Kubernetes network as the Agent and validate the new backend from #24639 without maintaining a host-side port-forward process.
Review checklist (to be filled by reviewers)
qa/requiredif this PR needs QA validation, orqa/skip-qaif it does not. Exactly one of the two is required.backport/<branch-name>label to the PR and it will automatically open a backport PR once this one is merged