UPDATE (8:24 PM PST). The issue earlier today was caused by a significant traffic load. We have a system in place to automatically deal with this but that system failed to restart during a recent reboot. It was a string of issues that, when combined, made what would have been a small problem into a much larger one. We apologize for the outage this morning. We have taken additional steps to track and verify that the monitoring and scaling systems are always running.
ORIGINAL (8:42 AM PST) We experienced an outage of a database server this morning, which caused an interruption in all sites, online donation pages, and access to the admin panel. The outage lasted for several hours. We are still investigating the root cause, as well as why our warning systems were not engaged. Will update this ticket as we learn more.