Capability to overwrite existing Kubernetes objects

[indrajithgihan]

Describe the problem/challenge you have

Currently If some resource already exists and differs from one in the backup, Velero will not overwrite it. Velero doesn't overwrite objects in-cluster if they already exist.

Describe the solution you'd like

Please provide Velero tool the capability to overwrite Kubernetes objects if they already exist

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Environment:

• Velero version (use velero version):1.8.1
• Kubernetes version (use kubectl version):1.21.9
• Kubernetes installer & version: kubeadm 1.21.9
• Cloud provider or hardware configuration: On-prem and AKS
• OS (e.g. from /etc/os-release):Ubuntu 18.04.6 LTS / Redhat 7.9

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[Lyndon-Li]

There is already an existing PR and issue for this requirement, #4842.
Please review it and check whether it meets your requirement.

[shubham-pampattiwar]

@indrajithgihan please refer the following:

• Issue link: Add ExistingResourcePolicy support to restore API #4842
• Design link: Add design for enabling support for ExistingResourcePolicy to restore API #4613
• Implementation link: Add existingResourcePolicy to Restore API #4628
  Please review the above as @Lyndon-Li also mentioned and let us know if it solves your issue.

[reasonerjt]

Closing as this will be implemented in v1.9