Paths/DevOps Engineer/Networking / Reverse Proxies & Load Balancing
Add a Health Check to the Proxy
A proxy is only as good as its health check. Start the application, prove it answers, and script the exact same question so the proxy can keep asking it.
Validator
⏱ 0:00
IDLE — checks run live as you type commands; submit when done
01Requirements
live checks- A container from app:latest is running and mapped to port 8080○
- The application answers with HTTP 200○
- File ~/nginx/health.sh exists and curls the health endpoint○
02Walkthrough
1 of 7 revealed- 01
Create the nginx directory
The health check script lives next to the proxy configuration.
mkdir ~/nginx - 6 locked · each failed submit reveals one
03Stuck?
0 of 3 revealedTake a hint without losing the lab — each one points at the thing to look at, not at the answer.
04AI Tutor
guides, never solvesTell me what you're stuck on — I'll nudge, not solve. Which requirement are you looking at?
04Notebook
saved locally in this browserlearner@lab — ubuntu:24.04 + docker
Session is disposable
↑/↓ recalls commands · Ctrl+Enter submits · type help for the command list