disk-usage

disk-usage

Alerts based on disk usage - run with cron or windows tasks

Usage

Pass --help

Usage of ./disk-usage:
  -alert-type string
    	Alert type to use. Defaults to slack for backwards compatibility, falls back on Stdout if slack params are not set (default "slack")
  -c string
    	Slack channel
  -dryrun
    	Run without sending alerts
  -hostname string
    	Set the hostname
  -log-level string
    	Set log level (error, warning, info, trace) (default "info")
  -slack-url string
    	Slack webhook url
  -t int
    	Disk usage percentage that should trigger an alert (default 85)
  -version
    	Print version

Example: Use slack:

./disk-usage.bin \
    -t 80 \
    -c "#my-channel" \
    -slack-url https://hooks.slack.com/services/mycookhere

Example message:

{
    "host": {
        "name": "test",
        "address": "10.99.1.10",
        "devices": [
            {
                "name": "/dev/dm-1",
                "mountpoint": "/",
                "type": "ext4",
                "usage_percent": 87
            },
            {
                "name": "/dev/sdc2",
                "mountpoint": "/boot",
                "type": "ext4",
                "usage_percent": 29
            },
            {
                "name": "/dev/dm-3",
                "mountpoint": "/home",
                "type": "ext4",
                "usage_percent": 63
            },
            {
                "name": "/dev/sda1",
                "mountpoint": "/mnt",
                "type": "ext4",
                "usage_percent": 21
            }
        ]
    },
    "message": "devices have high usage: [/dev/dm-1 /dev/sdc2 /dev/dm-3 /dev/sda1]",
    "severity": "fatal"
}

Building

A Makefile is provided, and relies on Docker to be available

make

If you wish to avoid Make and Docker, you can build with Go 1.16 on your machine

go install github.com/mitchellh/gox

env CGO_ENABLED=0 \
$GOPATH/bin/gox \
    -os='!netbsd !openbsd !darwin'  \
    -output "artifacts/disk-usage-{{.OS}}-{{.Arch}}" \
    ./...

Both build options will output binaries in artifacts/