Run a watchdog that doesn't live in the cloud it watches

说明与用途

在本地硬件上运行自托管的监控守护进程，提供独立的监控源，即使云监控服务不可用，也能检测到故障，提升事件响应速度。

问题

Monitoring services often run on the same cloud infrastructure they monitor, causing outages when that infrastructure fails, leaving teams unable to detect or respond to failures.

结果

Teams gain an always‑available watchdog that can detect outages even when cloud monitoring services are down, improving incident response time and reliability.

工作流

• Deploy a single Docker container on local hardware
• Configure the container to check internet uplink against multiple anchors
• Add DNS checks for critical domains
• Set up HTTP assertions for public services (status code, keyword in body)
• Monitor TLS certificate and domain expiry
• Include local infrastructure checks (containers, hypervisor, NAS, temperatures)
• Configure alerts to use existing notification channels

证据

When AWS's us-east-1 went down in October, and Cloudflare followed in November, plenty of teams learned that their monitoring lived on the same infrastructure as the things it monitored.

来源

The fix is old-fashioned and cheap: keep one monitor that depends on nothing but a box in your own building.

来源