✨ Kubeadm Upgrade ✨

⚠️ Always test your upgrades on a test cluster first! ⚠️

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Upgrade your kubeadm, cri-o, Debian 11/12 based Kubernetes cluster with this Ansible playbook.

I tested it with version 1.28 through 1.30. It should work with versions less than 1.28, depending on the mirror availability and packages on the mirrors.

🚀 Getting Started

📋 Dependencies

• ansible
• ansible-playbook
• python3

⚙️ Settings

⚠️ Use the exact host names as in your cluster since the script uses these to drain the nodes via kubectl ⚠️

1. Copy inventory.testing and fill in your nodes.
2. In group_vars, check the global options. Run the playbook once for your current version to ensure you're on the latest patch version.

▶️ Usage

Run the playbook with:

ansible-playbook -i inventory --private-key=~/.ssh/ssh-key upgrade_cluster.yaml

There will be a prompt, where you're asked to confirm the plan. When you're satisfied with the planned output, press ctrl+c and c again to continue or a to abort.

All that's left is to grab a cup of coffee, wait, and pray.