Facebook outage 2021: A simple mistake with global consequences | BetaNews

In October, the internet was shaken by the Facebook outage that affected dozens of big-name companies, as well as millions of brands and businesses that advertise on Facebook’s platform. Because of something as simple as a misconfigured Domain Name System (DNS) record, every device with the Facebook app integration started DDoS-ing recursive DNS resolvers — DDoS meaning “Distributed Denial of Service.” This, in turn, caused overloading in countless cases across the board. You might be thinking to yourself, “So, what? A few sites were offline for a couple of hours.” But the outage brought to light other issues. Communications for the very Facebook employees that could fix this issue were crippled. Some of these hindrances went so far that people were unable to enter buildings because the physical badge system wasn’t even online. So, now that the digital dust has started to clear, it’s time for the post-mortem. What can we learn from this event and how can you prevent it from happening to your organization? Because let’s face it: If a massive platform like Facebook can experience a sprawling outage, companies large and small should be taking notes. Configuration Management Matters Configuration Management (CM) is a system engineering process…
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