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Thumbnail of the blog post Facebook Outage 2021: What You Missed (And How External Monitoring Keeps You Safe)

Facebook Outage 2021: What You Missed (And How External Monitoring Keeps You Safe)

7/9/2025

Community

457 views

GarmingoGarmingo

On October 4, 2021, Facebook, Instagram, WhatsApp and Messenger all went dark for over 6 hours, affecting billions worldwide.

The outage wasn’t just a blip—it was a wake-up call:

Even the biggest platforms go down. Are you ready if yours does?


⚠️ What Actually Happened

  • A faulty update to Facebook’s backbone network routers caused DNS disruptions

  • This sealed off Facebook’s internal systems — including monitoring, recovery tools, internal dashboards and even office access

  • The issue persisted for ~6 hours, with global knock-on effects across digital businesses and workflows


🧠 Why Internal Tools Fell Short

  • Internal monitoring died with the network — no visibility when your infra “transforms into a black box”

  • Even internal response teams couldn’t login or use tools

  • No fallback — everything was dead until the network was fixed


✅ Why External Monitoring + Status Pages Matter


🛠️ How Garmingo Status Keeps You Covered

With Garmingo Status:

  • 🚨 Externally located monitors across geos

  • 🔔 Alerts to Slack, Email, Telegram, Discord, Webhooks

  • 🌐 Optional public & private status pages

  • 📉 Historical uptime + SLA dashboards

  • 🧾 Exportable PDF reports for teams

  • 🆓 Lifetime AppSumo deal (<$50) or free forever plan

👉 Secure your lifetime monitoring today


💡 Final Takeaway

Facebook taught us: failure can be existential—even at scale.

Relying only on internal tools? That’s a risk you can’t (and shouldn’t) afford.

External monitoring and status pages are essential resilience infrastructure.

👉 Try Garmingo Status free or get lifetime access now:

Lifetime AppSumo Deal

Got an idea? Let us know

Alexander NeitzelAlexander Neitzel