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Restore proper non-graceful shutdown behavior#866

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twz123 wants to merge 1 commit into
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twz123:restore-no-graceful-shutdown
Open

Restore proper non-graceful shutdown behavior#866
twz123 wants to merge 1 commit into
kubernetes-sigs:masterfrom
twz123:restore-no-graceful-shutdown

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@twz123

@twz123 twz123 commented Jun 22, 2026

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PR #794 attempted to retain the old non-graceful shutdown behavior if the graceful shutdown timeout was zero/not specified by converting the deferred close calls into an if block after the server received its shutdown signal. However, the PR didn't account for the fact that those deferred calls were executed in reverse order, having the opposite effect: the frontend server waited indefinitely for all frontend connections to close.

Reorder the close calls so that they are called in the same order as when they were called via the defer statements. Also, pass the Run method's context to the call to frontendShutdown, as this is the same context that was passed to the wrapped HTTP server's Shutdown method previously.

Fixes:

Commits cc87190 and e9575bf attempted to retain the old non-graceful
shutdown behavior if the graceful shutdown timeout was zero/not
specified by converting the deferred close calls into an if block
after the server received its shutdown signal. However, the commits
didn't account for the fact that those deferred calls were executed in
reverse order, having the opposite effect: the frontend server waited
indefinitely for all frontend connections to close.

Reorder the close calls so that they are called in the same order as
when they were called via the defer statements. Also, pass the Run
method's context to the call to frontendShutdown, as this is the same
context that was passed to the wrapped HTTP server's Shutdown method
previously.

Fixes: cc87190 ("addressing review")
Fixes: e9575bf ("shut down leaseController gracefully")
Signed-off-by: Tom Wieczorek <twieczorek@mirantis.com>
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Welcome @twz123!

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Hi @twz123. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work.

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@kubernetes-prow kubernetes-prow Bot added the needs-ok-to-test Indicates a PR that requires an org member to verify it is safe to test. label Jun 22, 2026
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[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: twz123
Once this PR has been reviewed and has the lgtm label, please assign cheftako for approval. For more information see the Code Review Process.

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@cheftako

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@ipochi Can you look at this?

@cheftako

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/ok-to-test

@kubernetes-prow kubernetes-prow Bot added ok-to-test Indicates a non-member PR verified by an org member that is safe to test. and removed needs-ok-to-test Indicates a PR that requires an org member to verify it is safe to test. labels Jun 29, 2026
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