[dprotaso]

Proposed Changes

Use existing Cloud Logging for log history instead of duplicate local copies.

• Limit Stern to autoscaler/proxy containers in the system, Istio, and all test namespaces, including native sidecars.
• Remove rotating container-log files; retain cluster/run metadata.
• Keep live failure triggers and CDS/EDS snapshots to catch transient SAN mismatches before Cloud Logging ingestion.

Normal non-debug logging is unchanged. This reduces diagnostic overhead, not the underlying mesh failures.

Validation

• go test -race ./test/meshdiagnostics -count=20
• go vet ./test/meshdiagnostics
• Shell syntax and diff checks pass. No live-cluster validation.

Release Note

NONE

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dprotaso

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• OWNERS [dprotaso]

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[dprotaso]

/assign @dsimansk @evankanderson

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.29%. Comparing base (7eea605) to head (a124960).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #16765      +/-   ##
==========================================
- Coverage   80.32%   80.29%   -0.04%     
==========================================
  Files         217      217              
  Lines       13701    13701              
==========================================
- Hits        11006    11001       -5     
- Misses       2327     2329       +2     
- Partials      368      371       +3     

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[evankanderson]

/lgtm