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#325 Upgrade AKS to v1.27 and docs

Arturo Hernandez [EPAM] requested to merge 325-ah/upgrade-aks into master

All Submissions:

  • [YES] Have you added an explanation of what your changes do and why you'd like us to include them?
  • [YES] I have updated the documentation accordingly.
  • [YES] My code follows the code style of this project.

Current Behavior or Linked Issues

  • AKS 1.25.x will EOS next year January, we are already behind schedule if we want to need to check whether will be any issues with recent AKS versions such as 1.27
  • Upgrading 2 major versions as k8s it is being deprecated fast, 1.27 it is scheduled to EOS on July 2024.
  • KEDA needs to be upgraded to avoid warns about upgrade.

Does this introduce a breaking change?

  • [NO]
  • Provided instructions on how to avoid downtime, if the proper surge for nodes it is configured, there should not be any downtime, moreover, AKS it is more stable and faster than ever, it took me about ~30m to upgrade our internal cluster by using azure web ui, not terraform.
  • By using terraform it might take more than 1hr in my experience, however, the upgrade should go smoothly with current Azure-osdu configuration.

Other information

Closes #325 (closed)

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