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Let agents idle for updates required by creation cancellation

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josh
2026-10-04 18:14:11 -04:00
parent 176b7dd86b
commit fae7775c72
5 changed files with 65 additions and 2 deletions
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docs/native-hosts.md
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@@ -426,3 +426,13 @@ Docker command must return or time out before cleanup can run. Cancellation
does not require the original creation to acknowledge completion. The agent
records a removal tombstone before cleanup so a delayed creation command cannot
recreate the instance, and resumes interrupted cleanup under the same operation ID.
While cancellation requires a newer agent, the controller pauses all command
delivery to that host, including background observations and command replays.
Older agents hold their update lock across a whole command batch; continuing to
feed them work could otherwise starve the updater. Already delivered work can
finish and report normally, and heartbeats continue. The next automatic update
check can install the release once the batch has drained. When a heartbeat
advertises cancellation support, delivery resumes with cancellation cleanup
first. This controller-side hold also recovers cancellations already waiting
on older agents. Hosts without automatic updates need the current installer.