https://blog.szypowi.cz/tags/signals/Recent content in Signals on blog.szypowi.czHugoen-usMon, 20 Apr 2026 12:00:00 +0200https://blog.szypowi.cz/p/terraform-under-azurecli@2-never-sees-your-cancel/Mon, 20 Apr 2026 12:00:00 +0200https://blog.szypowi.cz/p/terraform-under-azurecli@2-never-sees-your-cancel/<p>If you cancel an Azure DevOps pipeline mid-<code>terraform apply</code>, or let it hit its <code>timeoutInMinutes</code>, you probably expect terraform to catch SIGINT, release its state lock, and exit cleanly. Under <code>AzureCLI@2</code> that does not happen. Terraform is SIGKILLed without ever seeing a signal, and the state lock stays behind.</p> <h2 id="what-i-measured">What I measured</h2> <p>The Azure Pipelines agent applies a signal ladder on cancel: SIGINT, wait <code>PROCESS_SIGINT_TIMEOUT</code> ms (default 7500), SIGTERM, wait <code>PROCESS_SIGTERM_TIMEOUT</code> ms (default 2500), SIGKILL. Straightforward on paper.</p>