Write a Server Health Check Script

What you will build

A small tool you could actually leave running on any server.

Starting point: you only need a Vultr account. This challenge is self-contained, so you can do it without having done any other.

The plan

1. Deploy an Ubuntu 24.04 instance and connect over SSH
2. Write a script that reports disk usage, memory, load average and uptime
3. Check that at least two services (for example ssh and cron) are active
4. Print a WARNING line when disk use is above 80 percent or a service is down
5. Make the script exit non-zero when something is wrong
6. Schedule it with cron and write the output to a log file
7. Trigger a warning on purpose to prove it works

#!/usr/bin/env bash
set -euo pipefail
df -h /
free -m
uptime

How you will be judged

• Readable output a tired person can understand at 3am
• Thresholds are variables, not buried in the code
• Passes ShellCheck with no errors

Destroy everything you created when you are done so you are not billed for it.