Security News > 2022 > June > Massive Cloudflare outage caused by network configuration error
Cloudflare says a massive outage that affected more than a dozen of its data centers and hundreds of major online platforms and services today was caused by a change that should have increased network resilience.
"Today, June 21, 2022, Cloudflare suffered an outage that affected traffic in 19 of our data centers," Cloudflare said after investigating the incident.
"Unfortunately, these 19 locations handle a significant proportion of our global traffic. This outage was caused by a change that was part of a long-running project to increase resilience in our busiest locations."
While there are no details regarding what caused the outage in the incident report published on Cloudflare's system status website, the company shared more info on the June 21 outage on the official blog.
"A change to the network configuration in those locations caused an outage which started at 06:27 UTC. At 06:58 UTC the first data center was brought back online and by 07:42 UTC all data centers were online and working correctly."
Although the affected locations represent only 4% of Cloudflare's entire network, their outage impacted roughly 50% of all HTTP requests handled by Cloudflare globally.