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CI: Cilium E2E Upgrade: Endpoint missed a policy revision; triggering regeneration #36493

@joestringer

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@joestringer

CI failure

In #36014 (Cilium operator metrics changes PR), the cilium-agent emitted a warning that must be investigated:

  ❌ Found 2 logs in kind-kind/kube-system/cilium-82l8g (cilium-agent) matching list of errors that must be investigated:
time="2024-12-09T22:11:47.598510226Z" level=warning msg="Endpoint missed a policy revision; triggering regeneration" ciliumEndpointName=cilium-test-2/client2-66475877c6-78vwg containerID=9ed53e8264 containerInterface= datapathPolicyRevision=175 desiredPolicyRevision=174 endpointID=2968 identity=18888 ipv4=10.244.2.129 ipv6="fd00:10:244:2::23c" k8sPodName=cilium-test-2/client2-66475877c6-78vwg subsys=endpoint (1 occurrences)
time="2024-12-09T22:11:47.598531595Z" level=warning msg="Endpoint missed a policy revision; triggering regeneration" ciliumEndpointName=cilium-test-2/client-645b68dcf7-mqrtw containerID=d6ef230408 containerInterface= datapathPolicyRevision=175 desiredPolicyRevision=174 endpointID=170 identity=17126 ipv4=10.244.2.73 ipv6="fd00:10:244:2::3d32" k8sPodName=cilium-test-2/client-645b68dcf7-mqrtw subsys=endpoint (1 occurrences)

Failure: https://github.com/cilium/cilium/actions/runs/12244949111/job/34158005309#step:23:490
Sysdump: https://github.com/cilium/cilium/actions/runs/12244949111/artifacts/2296692023

@squeed it looks like this warning was newly introduced in #36044 and is emitting a warning log on a condition that can regularly occur. Might be good to revisit this and figure out whether there's some condition we're unexpectedly hitting or whether the log message is just too noisy.

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area/CIContinuous Integration testing issue or flakearea/agentCilium agent related.ci/flakeThis is a known failure that occurs in the tree. Please investigate me!help-wantedYou can help! Post a detailed plan on the issue or create a PR to solve this issue.sig/policyImpacts whether traffic is allowed or denied based on user-defined policies.

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