We regularly upgrade cloud.gov platform components to their latest versions in order to deliver new features and security patches, as well as stability and operational improvements, as routine maintenance without customer application downtime. In the process of performing a scheduled upgrade on January 6, 2018, we caused some applications hosted on cloud.gov to be unavailable between 1:32 and 1:42 PM EST.
After completing an upgrade of a component that hosts customer applications, we started removing the previous version of this component before fully migrating customer applications to the new version. This error happened because we performed a manual step to migrate applications with the intention of preventing any momentary downtime, which didn’t successfully prevent downtime.
Once the previous version of the component was removed, all customer applications were automatically migrated to the new version and became available again.
In the future the cloud.gov operations team will: