tests: check CoreDNS via pod state instead of host process#5366
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Santa0337 wants to merge 2 commits intocanonical:masterfrom
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tests: check CoreDNS via pod state instead of host process#5366Santa0337 wants to merge 2 commits intocanonical:masterfrom
Santa0337 wants to merge 2 commits intocanonical:masterfrom
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Santa0337
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Jan 8, 2026
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tox -e lint
lint: commands[0]> flake8 --max-line-length=120 --ignore=C901,N801,N802,N803,N806,N816,W503,E203
lint: commands[1]> codespell --ignore-words-list=aks,ccompiler,NotIn --quiet-level=2 '--skip=.patch,.spec,.tox_env,.git,*.nsi'
lint: commands[2]> black --diff --check --exclude '/(.eggs|.git|.tox|.venv|.build|dist|charmhelpers|mod)/' .
All done! ✨ 🍰 ✨
72 files would be left unchanged.
lint: OK (4.21=setup[0.11]+cmd[1.24,0.45,2.40] seconds)
congratulations :) (4.26 seconds)
Santa0337
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Jan 22, 2026
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@lazzarello, @ktsakalozos could you make a code review.
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Summary
The stop/start test was checking for a
corednshost process usingpsutil.In modern MicroK8s, CoreDNS runs as a containerized pod and is not visible as a
host process even when DNS is healthy. This caused the test to fail even though
CoreDNS was running correctly.
Changes
for a host-level
corednsprocess.Testing
pytest tests/test-simple.pylocally.microk8s kubectl get pods -n kube-system.Possible Regressions
This change should not introduce regressions. The test now relies on Kubernetes
API state, which is the correct and stable source of truth for CoreDNS health.
Checklist
Notes
This change improves test reliability across environments where CoreDNS runs
inside containerd and is not visible as a host process due to snap confinement.