err:frontline:capacity:no_running_instances503 Service Unavailable.
Example response
If you’re calling an API hosted on Unkey
Retry after a short delay, with backoff. If it lasts more than a few minutes, only the API owner can fix it. Give them the request ID.If you own this API
The gateway sends each request to a running instance in its region, or in the nearest region that has one. There was none. Common causes:- The deployment is still starting and has no ready instances yet.
- Every instance failed, usually because the process exits at startup or never passes its health check.
- The environment has no current deployment, or its regions and replica counts aren’t what you expect.
How to fix
- Open the deployment in the dashboard. During a rollout, wait for instances to become ready.
- If instances are
failed, read the runtime logs for a crash at startup or a failing health check. - Check that the has a current deployment, and that its regions and replica counts are set as you expect.
deployment_offline instead.
Related errors
err:frontline:capacity:deployment_offline: the deployment was stopped intentionally.err:frontline:upstream:service_unavailable: an instance existed but refused the connection.err:frontline:capacity:spend_limit_reached: compute is paused by a spend budget.