Retain process logs on robustness tests

[tjungblu]

Adding a new flag to retain e2e etcd process logs after stop and saving next to the visualized model.

Spun out of #16018 where I used it for easier local debugging on model violations.

Please read https://github.com/etcd-io/etcd/blob/main/CONTRIBUTING.md#contribution-flow.

[serathius]

Etcd logs are available the same way as e2e logs. By passing EXPECT_DEBUG=true flag to the test run.

[tjungblu]

Etcd logs are available the same way as e2e logs. By passing EXPECT_DEBUG=true flag to the test run.

If you feel like browsing the logs is convenient enough already I'm happy to close. For me it makes more sense to have the member debug logs next to the history.html in the artifacts zip.

[serathius]

If you feel like browsing the logs is convenient enough already I'm happy to close. For me it makes more sense to have the member debug logs next to the history.html in the artifacts zip.

It's not https://github.com/etcd-io/etcd/issues/15079

[serathius]

FYI main challenge here is to merge logs from between server restarts.

[tjungblu]

@serathius created an aggregation of LogExpects to merge the logs. Let me know if the implemented behavior works for you, too (mostly on the expect side of things).

[serathius]

Also, please remove environment EXPECT_DEBUG from the Robustness tests github workflow.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed after 21 days if no further activity occurs. Thank you for your contributions.

[k8s-ci-robot]

@tjungblu: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-etcd-verify	b5cdfc099fe6d05e02789f642f43f7ea417e1186	link	true	/test pull-etcd-verify
pull-etcd-unit-test-amd64	b5cdfc099fe6d05e02789f642f43f7ea417e1186	link	true	/test pull-etcd-unit-test-amd64
pull-etcd-unit-test-arm64	b5cdfc099fe6d05e02789f642f43f7ea417e1186	link	true	/test pull-etcd-unit-test-arm64

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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