GitHub Availability Report: September 2020

In September, GitHub faced a significant incident affecting the availability of its Pages service due to a node becoming unresponsive to new builds while still serving requests, which prevented its automatic removal from service. This led to build failures until the node was manually disabled, highlighting a need for improved failure remediation. GitHub plans to implement automatic failure remediation and retry builds on different nodes to prevent similar issues in the future, with updates on their reliability improvements available on the GitHub engineering blog.