https://luth.io/tags/webhooks/ Recent content in Webhooks on Luther Monson Hugo en Wed, 07 Oct 2026 21:10:00 -0700 https://luth.io/blog/2026/10/webhooks-out-of-order-scheduler/ Wed, 07 Oct 2026 21:10:00 -0700 https://luth.io/blog/2026/10/webhooks-out-of-order-scheduler/ <p>The scheduler in <a href="https://luth.io/blog/2026/08/ephemerd-one-daemon-every-os/">ephemerd</a> is event-driven. GitHub sends a <code>workflow_job</code> webhook when a job is queued, when it starts and when it completes. ephemerd creates and destroys runners to match. For a while that worked well enough that I stopped thinking about it. Then a <code>docker-build</code> job failed with &ldquo;The self-hosted runner lost communication with the server&rdquo;. I pulled the node&rsquo;s journal. ephemerd had destroyed that runner itself, on purpose, while it was running the build.</p>