Kubernetes upgrade from ver 1.28 to 1.29

[zhoujing2022]

Description Currently kyma supports k8s 1.28. As all dependencies are met we can support the next version 1.29.

SRE k8s upgrade plan: https://wiki.one.int.sap/wiki/pages/viewpage.action?pageId=3011925416

Furthermore the support for next version should be prepared by already having a post-main-k3d-k8s-preview pipeline in place to identify problems fast and start addressing them.

Tasks

• [ ] [k8s update] @TW Pre-Notification to Customers via What's New. This Step must be done 4 weeks before Golive on PRD. (Before 14.July.2024)
• [ ] [k8s update] @zhoujing2022 Ensure no deprecated resources exist which will be no longer support on the new K8s cluster
• [ ] [k8s update] @neighbors Prow jobs are based on k8s 1.29 (see neighbours issue)
• [ ] [k8s update] @neighbors Already existing release jobs (from last release) should be still using old k8s version. (see neighbours issue)
• [ ] [k8s update] @neighbors Default version for kubectl is 1.29 (Docu, Prow) (see neighbours issue)
• [ ] [k8s update] @TW document new version and add release notes ()

AC:

• all pipelines are upgraded to k8s 1.29
• documentation is updated
• migration guide with potential manual actions is ready
• there is a new k3d based pipeline running on k8s 1.30 for preview purposes

The list of pre-tasks: (POs analyze "Kubernetes Removals, Deprecations, and Major Changes in 1.29" - and create/add the issues below. These Issues must be released before 13.July.2024 on PRD.) No Update from the teams.

Teams	Issues

Previous upgrade: https://github.com/kyma-project/kyma/issues/18558

Depends on https://github.com/kyma-project/test-infra/issues/6109

[github-actions[bot]]

This issue has been automatically marked as stale due to the lack of recent activity. It will soon be closed if no further activity occurs. Thank you for your contributions.

[zhoujing2022]

We don't need this ticket in the future. I will add the action item in the upgrade timeline.