Major incident

balena.io: Elevated API Errors

Affected: API, Application Builder, Delta Image Downloads

Current status of balena.io: Operational — live balena.io status

Timeline

1. May 5, 2026, 18:12 UTC
   investigating
   We're experiencing an elevated level of API errors and are currently looking into the issue.
2. May 5, 2026, 18:19 UTC
   identified
   The issue has been identified and a fix is being implemented.
3. May 5, 2026, 18:43 UTC
   monitoring
   A fix has been implemented and we are monitoring the results.
4. May 5, 2026, 21:03 UTC
   resolved
   This incident has been resolved.
5. May 5, 2026, 21:18 UTC
   postmortem
   A vulnerability mitigation update required replacing compute cluster nodes, which, when applied, rolled back due to a timeout. This caused some workloads \(API, delta, builder\) to become temporarily unavailable and triggering some undesired secondary effects, including ungracefully terminating a few long lived instances servicing VPN connections. While the rest of the services came back reasonably quickly within a minute or so, it too around one and a quarter hours to re-establish VPN tunnels. A scheduled maintenance will be posted later to perform this update during a planned outage window.

Updates as published by balena.io (original).