Cloudflare’s 27 Minutes Outage Explained

Cloudflare’s 27 Minutes Outage Explained

Cloudflare’s 27 Minutes Outage Explained: Cloudflare recently suffered a partial outage, which lasted for 27 minutes. This outage caused 50% of traffic drop across the network.

Cloudflare, the web performance and reliability company, recently suffered a partial outage for internet properties and its services. The outage lasted for 27 minutes. The error in The Cloudflare Backbone network caused this outage, dropping traffic by 50% across the network. In his blog post, John Graham-Cumming, CTO, CloudFlare, clarified that this outage was not caused by an attack or breach of any kind.

Describing the timeline of the issue, Graham-Cumming said that the network engineering team updated the configuration on a router to resolve an unrelated issue to reduce congestion in the network. The issue was with a segment of the backbone from Newark to Chicago, USA. Error in configuration caused all traffic across the backbone to be sent to the Atlanta router, causing a massive load on the router.

This resulted in Cloudflare network locations connected to Atlanta to become unavailable. The 20 affected locations were San Jose, Dallas, Seattle, Los Angeles, Chicago, Washington, DC, Richmond, Newark, Atlanta, London, Amsterdam, Frankfurt, Paris, Stockholm, Moscow, St. Petersburg, São Paulo, Curitiba, and Porto Alegre.

Twitter users started reporting about services being down, as websites such as League of Legends, Deliveroo, Discord, Feedly, GitLab, Medium, Patreon, Politico, and Shopify were affected.

Issuing an apology, Graham-Cumming introduced a global change made to the backbone configuration in order to prevent such an outage occurring again.. Providing the details further, Matthew Prince, CEO, Cloudflare tweeted, "the root cause was a typo in a router configuration on the private backbone. We've applied safeguards to ensure a mistake like this will not cause problems in the future."

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