Ansible

Overview

Use Ansible for repeatable, idempotent changes across nodes. Keep playbooks minimal, explicit about hosts, and safe to re-run.

When to use

• You need to apply the same change on multiple hosts.
• The change touches OS packages, services, or system config.
• You are bootstrapping or maintaining k3s, Rancher, or Tailscale on nodes.

Inventory and groups

Inventory lives in ansible/inventory/hosts.ini. Common groups: