[backport] - (#3776)(#3768) perf: update error message for MTPNC not found and not ready in CNS #3775
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Pull Request Overview
This PR updates the network readiness error message so that kubelet will recognize it and retry faster, aligning with upstream expectations.
- Prefixes the existing mtpnc-not-ready error with “network is not ready”
- Adds an inline comment linking to the kubelet source that checks for this string
- (Unit tests and documentation updates included in the cherry-picked PR)
Comments suppressed due to low confidence (2)
cns/middlewares/k8sSwiftV2.go:22
- Ensure there is a unit test that specifically asserts this error message starts with "network is not ready", so kubelet will detect and retry as intended.
errMTPNCNotReady = errors.New("network is not ready - mtpnc is not ready") cns/middlewares/k8sSwiftV2.go:22
- [nitpick] The variable name
errMTPNCNotReadynow covers network readiness; consider renaming it toerrNetworkNotReadyor similar to better reflect its scope.
errMTPNCNotReady = errors.New("network is not ready - mtpnc is not ready") 
| @isaac-dasan I can see that this PR is a cherry-pick and the diff is tiny, but we have been talking about having all changes being under UT coverage, could we please add one? One approach that works pretty well for all fixes is to add an assertion that fails without your fix, but passes with the fix. |
santhoshmprabhu previously approved these changes Jul 4, 2025
miguelgoms previously approved these changes Jul 8, 2025
isaac-dasan dismissed stale reviews from miguelgoms and santhoshmprabhu via 00d66ee 
| /azp run Azure Container Networking PR |
| Azure Pipelines successfully started running 1 pipeline(s). |
update network error msg to match kubelet expectations Signed-off-by: GitHub <noreply@github.com>
…3776) squash commit to prevent github CLA issue Signed-off-by: GitHub <noreply@github.com>
isaac-dasan force-pushed the isaac/1-6cherrypick/mtpncerrormessage branch from 00d66ee to 6da6ad6 Compare isaac-dasan changed the title isaac-dasan changed the title 
rejain456 approved these changes Jul 11, 2025
| /azp run Azure Container Networking PR |
| Azure Pipelines successfully started running 1 pipeline(s). |
ravisraju approved these changes Jul 11, 2025
rbtr approved these changes Jul 11, 2025
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update network error msg to match kubelet expectations
cherry pick from master of this
Requirements:
Notes: