Problem affecting two servers (resolved)
We posted earlier about a problem affecting the elzar Web server. While we were investigating the cause of that, the same thing happened on another Web server, “calculon”, causing a separate outage for customers on that server from 2:34 PM to 2:43 PM Pacific time this afternoon.
During this period, Web sites on that server were unavailable and incoming e-mail was delayed. (The Web server was slow for about six minutes after it was restarted, too.)
On both servers, high disk and memory usage caused the load to skyrocket to the point where they effectively stopped responding.
The good news is that we have narrowed down the cause, so it shouldn’t happen again. A bug in one of our maintenance programs that runs on each server was almost certainly responsible. The bug has been fixed.
We sincerely apologize for this issue, and regret the inconvenience it caused for customers hosted on these servers. Other servers were not affected.