Write Claudie + Elastx OpenStack tutorial

[samuelstolicny]

Sub-task of #1900.

Elastx (Christine, 2026-04-16) confirmed interest and requested a draft of the tutorial.

Scope

Write and publish a step-by-step guide on running Kubernetes on Elastx OpenStack with Claudie, including a multi-cloud example (Elastx + another provider such as AWS or Azure) to showcase the core Claudie use case.

Deliverables

• End-to-end test of Claudie against Elastx OpenStack (single-provider cluster)
• End-to-end test of a multi-cloud cluster with Elastx as one of the nodepools
• Markdown draft covering:
  • Prerequisites and Elastx project setup (application credentials, quotas, network/router)
  • InputManifest example for multi-cloud cluster (cross-provider)
  • Step-by-step walkthrough of bootstrapping the cluster with Claudie
  • Verification and teardown
• Send draft to Christine at Elastx for review
• Coordinate publishing venue (guest post on elastx.se / section in docs.elastx.cloud / link from news page to post on our side)
• Publish

Reference

Hetzner tutorial we published as format reference: https://community.hetzner.com/tutorials/kubernetes-with-claudie
(Note: Hetzner version is single-provider only; the Elastx version should demonstrate the multi-cloud angle.)

[samuelstolicny]

Status update:

• Christine asked for a draft (2026-04-16); reply sent with plan.
• Account registration submitted via Bernard; awaiting full access details from Team Elastx during CET office hours.
• Will run end-to-end test + draft once access arrives.