duhm

Downgrade/Upgrade Hetzner Machines

CLI generated using bashly

Why

I have an Owncast instance hosted on a Hetzner VPS. To get the most out of both, I run the VPS regularly in the lowest tier, switch it to the highest tier right before streaming then switch back to the lowest tier after streaming.

duhm makes this process stupidly simple.

Usage

Use case 1: downgrading and upgrading the machine

duhm upgrade server.yml
duhm downgrade server.yml

Use case 2: powering the machine on and off

duhm poweron server.yml
duhm poweroff server.yml

Installation

Make sure you have hcloud (repo) installed.

For now, depending on your preference, either go with:

git clone https://codeberg.org/yarmo/duhm.git
cd duhm
cp duhm /usr/local/bin

or

curl https://codeberg.org/yarmo/duhm/raw/branch/main/duhm -o /usr/local/bin/duhm

Currently looking into packaging. Open to suggestions/PR.

Setting up

Hetzner/hcloud settings

Go to your Hetzner project > Security > API tokens. Generate a new API token.

On your machine, run:

hcloud context create my-project

which will ask you for the API token.

Local settings

Create a new server.yml file with the following content:

commands:
  up: docker-compose up -d
  down: docker-compose down

ssh:
  host: 123.123.123.123
  port: 22
  user: user

vps:
  name: stream-server
  type:
    upgrade: cpx51
    downgrade: cpx11

Note

Currently, the script doesn't check the current state of machines. This may lead to scripts hanging or sometimes acting weirdly.

If sever