Fb, Instagram and WhatsApp stopped working due to a crash. But what was the real reason for the problems?
It was four o’clock in the afternoon on October 4th, and billions of people around the world are used to it WhatsApp, Instagram and Fb mostly. But from one moment to the next Messages don’t come anymorethe stories Loading stopped and posts were unavailable: Fb and all its services were down.
While it wasn’t Fb’s first case this year, it was one of the most serious The company has suffered in recent years. not just two Duration, about six hours since the first problems were reported; but also because the fall has affected users and companies and professionals who need Fb services to function normally. even their own Fb staff They were unable to use their internal tools or even access the company’s buildings.
Not good news for Mark Zuckerberg, the company’s director ejecutivo, either, who saw it firsthand when Fb shares fell 5%and his fortune has been reduced by as much as $7,000 million.
But, What was behind the biggest slump on Fb in years? That’s what the company itself and other experts in the field wanted to explain what problems have occurred the failure of the Company’s services.
Fb, Instagram and WhatsApp” were deleted from the internet
I Posted on his official engineering blogFb explains that since the issues also affected its internal tools and services, It was difficult to find a solution and locate the errors since their systems were also compromised.
“The root genere of this outage affected many of the internal tools and systems we use in our day-to-day operations, complicating our efforts to quickly diagnose and resolve the issue.”
After several hours of work, the company’s engineers were able to identify the fallo. The ocasione seems to have something to do with a Configuration change on trunk enrutadores They are responsible for coordinating network traffic between data centers.
When the configuration change was made, communication between the data centers was disrupted, making it impossible to communicate with each other, leading to this complete cessation of Fb services.
the people of flare up He goes one step further and explains in a way in his blog more technique What is the downfall that Fb and its services suffered yesterday?
“Habitual” BGP ads from ASN AS32934 Fb and their direct peers
– Picture 15 minutes later: The transmitters are gone
– It’s not that Fb’s DNS isn’t working or is down, it’s that Fb is gone…
about @GGreg pic.twitter.com/P49kTOxoX7— elhacker.NET (@elhackernet) October 4, 2021
They state that on October 4 around five o’clock in the afternoon. The IP addresses of Fb and the rest of the platforms have essentially been erased from the internet. The company stopped “advertising” the routes to its DNS prefixes, which stopped DNS resolvers from responding to requests to access Fb addresses.
In other words, at Type an address like “https://fb.com” into a browserthe responsible DNS resolution service Transfer this address to the appropriate IP to establish the connectionCouldn’t find this IP since then who had been removed from their tables.
“The channels were removed, Fb’s DNS servers went sin conexión […] With these moves, Fb and its pages have effectively been disconnected from the internet.”
After work, the company could to solve the problems and recovery services. They claim this fall Users’ private data was not compromisedand he denies that an attack is behind the failures of his servers.
Now, WhatsApp, Fb, Instagram, Oculus and the other Fb services and platforms they usually work.