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Containers · 3 November 2026

Fly Machines restart

POST /compat/fly/v1/apps/{app_name}/machines/{machine_id}/restart is now supported. It creates a new version of the machine's Container with the same settings, and that version's copy replaces the running one. The timeout query parameter is accepted. signal returns 400, because the restart replaces the copy instead of signaling its process. As with the other machine routes, a machine is found only under its own app.

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