Enable google api_endpoint_overrides for storage in velero-plugin-for-gcp

[salla2]

Describe the problem/challenge you have

We have different storage endpoint for gcs bucket and we cannot set that today, usually using gcloud cli we can set this through gcloud config set api_endpoint_overrides/storage https://storage-test1.p.googleapis.com/storage/v1/ and with sdk through below based on docs [https://cloud.google.com/storage/docs/request-endpoints#storage-set-client-endpoint-go]

Describe the solution you'd like

It would be great if I can pass api_endpoint_overrides/storage through BackupStorageLocation , something like additional key under bucket. objectStorage: bucket: velero-backups prefix: private/stage/cluster api_endpoint_overrides/storage: https://storage-test1.p.googleapis.com/storage/v1/

Anything else you would like to add:

Environment:

• Velero version (use velero version):
• Kubernetes version (use kubectl version):
• Kubernetes installer & version:
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):

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[blackpiglet]

Does your environment try to connect to the GCP API in the on-premise infrastructure? https://cloud.google.com/vpc/docs/configure-private-service-connect-apis

If the OSS API uses the specified DNS, the snapshot API may also need the same configuration.

[chrislinan]

I have the same request, We would like to use regional endpoints of the GCP service. And I have a potential solution:

1. add a new config in GCP BSL, such as "endpoint", example:

   spec:
   accessMode: ReadWrite
   credential:
   key: key
   name: velero
   default: true
   endpoint: https://storage-test1.p.googleapis.com/storage/v1
   objectStorage:
   bucket: bucket_name
   prefix: prefix_example
   provider: gcp

2. enhance the GCP plugin here: Use WithEndPoint for the clientOptions.

I can prepare the PR to implement this feature if that is acceptable.

[blackpiglet]

Thanks for your interest in contribution. If a new configuration is needed, I prefer to add it in the BSL.spec.config.

[chrislinan]

OK, I will prepare a PR for this feature.

[chrislinan]

PR opened for this feature: https://github.com/vmware-tanzu/velero-plugin-for-gcp/pull/184