The world’s online encyclopedia, Wikipedia, has gone down this afternoon disrupting service to millions of users worldwide
Wikipedia only went down a few hours ago, according to the Twitter stream, which is already pumping out dozens of tweets per minute about the outage. There is only a “Server Not Found” message for users. Wikipedia.org is up, but most, if not all of the language-based encyclopedias are down, including the English one.
What Wikipedia has to say:
Overheating in the European data center and broken DNS resolution of Wikimedia sites affected Wikipedia across-the-board. From the Wikipedia Tech Blog:
“Due to an overheating problem in our European data center many of our servers turned off to protect themselves. As this impacted all Wikipedia and other projects access from European users, we were forced to move all user traffic to our Florida cluster, for which we have a standard quick failover procedure in place, that changes our DNS entries.
However, shortly after we did this failover switch, it turned out that this failover mechanism was now broken, causing the DNS resolution of Wikimedia sites to stop working globally. This problem was quickly resolved, but unfortunately it may take up to an hour before access is restored for everyone, due to caching effects.
We apologize for the inconvenience this has caused.”
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