A script that sends discord notification when the disk size is below a threshold, can be used in servers to monitor disk usage periodically by pairing with cron

disk_usage_bot.py

import json
import subprocess

threshold = 10  # GB
webhook_url = "https://discord.com/api/webhooks/xxx/xxx"
environment = "my-server-name"


free_space = (
    int(
        (
            subprocess.check_output(
                "df --output=avail / | tail -n 1", shell=True
            )
            .decode()
            .strip()
        )
    )
    / 1024
    / 1024
)


data = {
    "username": "Disk Usage Bot",
    "embeds": [
        {
            "title": "Warning",
            "color": 16711680,
            "description": (
                f"{environment} has only {free_space:.2f} GB disk left"
            ),
        }
    ],
}

cmd = (
    f"curl -H \"Content-Type: application/json\" -d '{json.dumps(data)}'"
    f' "{webhook_url}"'
)


if free_space < threshold:
    subprocess.run(cmd, shell=True)