Cleanup Tasks for Release 1.18

[RainbowMango]

Overview

This issue tracks cleanup tasks and deprecation removals that should be addressed in the Karmada Release 1.18. These items were deprecated or marked for removal in previous versions and are candidates for cleanup in this release cycle.

Context

As an open source project, we sometimes need to deprecate features or APIs gradually to minimize breaking changes for users. This issue serves as a central place to track and coordinate all cleanup work that spans multiple release cycles.

Cleanup Items

1. Remove deprecated metrics labels

• Description: Remove deprecated metric labels
• Deprecation Version: Release 1.16
• Related Issue(s): Standardize Karmada metrics label for member clusters to avoid conflicts with Prometheus external_labels #6781
• Changes Required:
  • Remove deprecated labels from metrics code (@dahuo98, Remove deprecated cluster_name and cluster metric label #7258)
  • update the docs to remove this section for the v1.18 release. (@dahuo98, remove doc for deprecated metric labels website#989)

2. Remove deprecated KarmadaInitConfig Field

• Description: Remove deprecated KarmadaInitConfig Field
• Deprecation Version: Release 1.17
• Related Pull Request(s): depercated: mark KarmadaInitConfig.spec.etcd.local.initImage deprecated #6995
• Changes Required：
  • remove InitImage field from KarmadaInitConfig struct (@dahuo98, Remove deprecated InitImage field from LocalEtcd struct in karmadactl #7259)

3. Remove deprecated karmada-controller-manager lease flags

• Description: karmada-controller-manager lease flags
• Deprecation Version: Release 1.17
• Related Pull Request(s): Deprecate unused cluster lease flags in karmada-controller-manager #7126
• Changes Required：
  • remove --cluster-lease-duration and cluster-lease-renew-interval-fraction flags from karmada-controller-manager. (@dahuo98, Remove deprecated flags in controller manager options #7271)

4. Remove deprecated fake client usage regarding NewSimpleClientset

• Related Pull Request(s): cleanup deprecated fake client #7168
  • Remove nolint marker and replace the deprecated NewSimpleClientset with NewClientset.

[zhzhuang-zju]

Add a cleanup Item

Remove Deprecated KarmadaInitConfig Field

• Description: Remove deprecated KarmadaInitConfig Field
• Deprecation Version: Release 1.17
• Related Pull Request(s): depercated: mark KarmadaInitConfig.spec.etcd.local.initImage deprecated #6995
• Changes Required：
  • remove InitImage field from KarmadaInitConfig struct

[RainbowMango]

Added

[RainbowMango]

/help
We can start this now, as we are now in release-1.18.

[karmada-bot]

@RainbowMango:
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Details

In response to this:

/help
We can start this now, as we are now in release-1.18.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[dahuo98]

@RainbowMango I can help with this if it's not already picked up

[RainbowMango]

Sure, thanks. Go ahead!
/assign @dahuo98

[RainbowMango]

PS: It is recommended to have a PR for each item on the list. That would help to get reviewed and approved faster.