The company chief later posted an update saying his team appears to "have mitigated the issue causing the outage", adding they continue to work towards resolving the it, while the traffic has already been restored. After all, Cloudflare operates a very popular CDN, which protects website owners from issues like comment spam attacks and peak loads, when working correctly.
They said: "Cloudflare is observing network performance issues".
Load-management and security firm Cloudflare has apologised for an outage that took down a surprisingly large chunk of the web for around half an hour yesterday, placing the blame on a botched firewall update.
Graham-Cumming said the outage had been noticed at 1342 UTC (11.42pm AEST 2 July) right across the entire network with all sites that used Cloudflare as a proxy showing a 502 (bad gateway) error.
According to him, a "bad software deploy" caused a "massive spike in CPU utilisation" that briefly knocked out some of its data centres, bringing down Cloudflare-dependent websites with it.
Of course, they did issue an official explanation, with its CTO, John Graham-Cumming, stating that the service's visitors might have received 502 error messages for about 30 minutes. "Once [the software was] rolled back the service returned to normal operation and all domains using Cloudflare returned to normal traffic levels", the company said. The company provides DDoS attack protection to websites around the world but has also been hit with massive 400Gbps DDoS attacks in the past. This 100 per cent CPU spike caused the 502 errors that our customers saw. We then attempted to see just how extensive the outage actually was, but DownDetector and the other sites that monitor outages just so happened to be down as well.
"We make software deployments constantly across the network and have automated systems to run test suites, and a procedure for deploying progressively to prevent incidents".
"Cloudflare has implemented a fix for this issue and is now monitoring the results", the company writes. "We let the internet down today".