ipam/allocator/podcidr: fix old pod cidr logging error

[lrouter]

When releasing a pod cidr of a node, this pod cidr field is appended to
the log cache. But log cache could not be flushed because log is not in
debug mode. So old pod cidr is always in the log cache and shows up in
the log output even after a new pod cidr is allocated.
Fix this error by flushing the log cache.

[twpayne]

test-me-please

Job 'Cilium-PR-K8s-GKE' failed and has not been observed before, so may be related to your PR:

Click to show.

Test Name

K8sFQDNTest Restart Cilium validate that FQDN is still working

Failure Output

FAIL: Testapp is not ready after timeout

If it is a flake, comment /mlh new-flake Cilium-PR-K8s-GKE so I can create a new GitHub issue to track it.

[lrouter]

@twpayne My PR just replaces log.Debug with log.Info. it's weird that some unrelated test cases have failed. Please help !

Thanks.

[twpayne]

We have a few flaky tests at the moment, the failures have nothing to do with your PR. Note also that the test-me-please comment is to trigger CI to run, not a message to you :)

[lrouter]

We have a few flaky tests at the moment, the failures have nothing to do with your PR. Note also that the test-me-please comment is to trigger CI to run, not a message to you :)

👍 . Thanks for explanations.
/mlh new-flake Cilium-PR-K8s-GKE

[lrouter]

@twpayne Hi, does there any update about this PR ? We have found some issues about cilium IPAM which could lead to pod cidr conflict. This is the first try to fix it.

[twpayne]

Would you mind rebasing this PR on the latest master? We should have fixed some of the flaky tests.

[twpayne]

OK, approved as it's a trivial change and marked ready-to-merge.

I'll still keep an eye on the tests as it's a good barometer PR for our CI :)

[lrouter]

OK, approved as it's a trivial change and marked ready-to-merge.

I'll still keep an eye on the tests as it's a good barometer PR for our CI :)

Thanks. By the way, we are working to build a local cilium CI/CD system. I fount that it's hard to do this. I have to build cilium-runtime again and again, and have to push them to a private repo to be used by following building steps.

[lrouter]

OK, approved as it's a trivial change and marked ready-to-merge.

I'll still keep an eye on the tests as it's a good barometer PR for our CI :)

Thanks. By the way, we are working to build a local cilium CI/CD system. I fount that it's hard to do this. I have to build cilium-runtime again and again, and have to push them to a private repo to be used by following building steps.