Posted on 10/06/2021 10:17:16 AM PDT by Red Badger
FACEBOOK, Instagram and WhatsApp went down for seven hours in a major global outage yesterday – but why?
Here's a quick guide on what actually happened to take three of the world's biggest websites and apps offline.
https://www.thesun.co.uk/tech/16328655/facebook-instagram-whatsapp-crashed/
In 2021, it's easy to wonder how huge chunks of the internet can go offline.
But it's surprisingly easy for outages to happen – due to how the internet works.
World wide web Every website – including Facebook – exists on a computer server somewhere.
So when you want to log on to Facebook.com, you have to connect to one of Facebook's computers.
Every website has an IP address, which you can type into your web browser – if you want.
But we prefer using domain names like Facebook.com because they're easier to remember.
That's where a DNS (Domain Name System) comes in.
When you type Facebook.com into your browser, the DNS effectively matches that URL to an IP address – allowing your computer to connect to Facebook.
Outages are often caused by DNS issues – but Facebook's problems go even deeper.
When you typed in Facebook.com, it was as if Facebook didn't exist.
There was nowhere for the DNS to send you.
Surfing the web DNS servers are often thought of as being like a phonebook for the internet.
But there's another system called BGP (Border Gateway Protocol).
BGP is like a Sat Nav that guides your data across the internet – to any address, courtesy of the DNS "phonebook".
So when you send packets of data to Facebook, BGP will guide it on the most efficient route – or another way, if that's unavailable.
It's like Google Maps, telling your data to take a left here and a right there.
This is how all the different networks that make up the internet can easily be navigated – with no effort from you.
There are lots of BGP systems – Facebook even built its own, to make life easier.
Facebook fail So what went wrong?
Facebook effectively told BGP – the maps of the internet – to remove itself from those maps.
This was obviously a mistake. A big one.
No DNS or BGP – and no user, ultimately – could find Facebook.
Imagine you had the address for a house, but no maps listed it.
Even though the house exists, if it doesn't appear on a map, you can't find it.
And because Facebook hosts WhatsApp, Instagram, Workplace and more, these websites couldn't be "found" either.
Everything that works through Facebook – including "Log In With Facebook" – was effectively shut down.
We even saw reports of Facebook employees being unable to get through security doors – and even speak to each other online.
This is a nightmare when the internet has lost you, and you need it to find you again.
Facebook runs most of its own systems, and Facebook was down.
So Facebook bosses needed engineers to physically get down to sites to repair the issue – and let the internet find Facebook again.
What actually went wrong? So we know that Facebook told the internet it didn't exist any more.
But why?
The details are still light, but Facebook was doing an update – and did it wrong.
"Our engineering teams have learned that configuration changes on the backbone routers that coordinate network traffic between our data centers caused issues that interrupted this communication," Facebook's Santosh Janardhan said.
"This disruption to network traffic had a cascading effect on the way our data centers communicate, bringing our services to a halt."
Basically, Facebook's own routers – which connect Facebook servers to the internet – were configured wrongly.
So rather than a cyber-attack, overloaded servers or physical damage, it was simply a dodgy update.
And in seconds, it took billions of users offline for hours.
Someone had to program the update...so why couldnt it still be sabotage? This guys just chalking it up to whatever FB is saying happened happened. FB seems pretty untrustworthy if you ask me.
That is their story and they are going to stick to it.
A more interesting test would be to shut down EBT in Michigan.
That’s what you get when your only requirement and highest priority for employment is your commie political reliability.
Embrace the suck zuck.
This pabulum is not worth reading.
I don’t believe anything fakebook says about anything including why they were shut down.
All planned. Facebook starts their psyop campaign with the “whistleblowe.” Facebook runs ads demanding more internet regulation. Zuck issues pathetic canned response about how great it is. Facebook works with Chomo Biden to censor “misinformation.” All lies. All planned. All to make big tech and the democrats even more powerful.
Reminds me of the Y2K hysteria which was going to destroy all computer systems.
Nothing happened.
I’ve been involved with making routing changes in networks the size of Facebook for nearly 20 years and you’re right most of the time changes are made in the middle of the night when traffic is the lowest....that did catch my attention....what that wasn’t the case this time.
I can only speak for Cisco System Routers, but when you change the routing it takes place immediately and you would notice changes in how data is flowing in/out of your network just as quickly if you were monitoring the situation which I assume they were....
If you saw Facebook and the other apps go offline you would stop and reverse the changes, but it seemed that facebook did not know what went wrong and it took them a number of hours to figure out the problem and get it reversed...that seemed really odd to me...
After the problem was resolved, I’m sure a number of network engineers and their manager have updated their resumes and likely started looking for jobs because what happened is usually a career killer...
Right.
Sure.
The rest of us think it was a trial run.
As you say. This stinks like fish on ice.
A sufficiently paranoid person might think the “outage” was deliberate to provide cover for purging incriminating evidence.
I certainly do!
just long enough to get the new sanitized OS up and running after the leak?
No. This is to easy to fix.
no, it was Trump’s fault
Both !!!!
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