Set up a Galera Witness on Hetzner VPS using Terraform + Ansible (AWX)

by Jan Bachelor
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In this tutorial, we will automate deployment of a VPS on Hetzner (a renowned EU cloud based provider) using Terraform and configure it using Ansible – all triggered from AWX. This is a definitive guide for anyone running Galera on hybrid cloud infrastructure!

Screenshot of AWX showing 3 templates.
The goal of this tutorial – set up 3 templates in AWX to provision a VPS, configure it with S2S VPN + Galera Arbitrator and then set up monitoring of the Galera DB cluster using Uptime Kuma
1. Proposed architecture + infrastructure requirements 2. Create the initial Terraform + Ansible scripts 3. Prepare your AWX environment – Credentials 4. Create a provisioning job in AWX [Template 1] 5. Create a Configuration job template in AWX [Template 2] 6. Create an Uptime Kuma restoration job [Template 3] 7. Create a Workflow Template to join the 3 jobs