Open fbozic opened 1 year ago
/assign @justinsb
I'm also interested in this. It's a shame the GKE Workload Identity functionality is not open source - but the https://github.com/pfnet-research/gcp-workload-identity-federation-webhook project looks interesting.
I submitted a PR to the gcp-workload-identity-federation-webhook
project to do the identity injection without an init container.
Also, I opened https://github.com/kubernetes/kops/pull/16050 on this repo to get kOps publishing the Cluster Issuer OIDC documents to GCS.
Next step will be to get kOps to provision the Google Workload Identity Federation pieces, and deploy gcp-workload-identity-federation-webhook
as an addon.
EDIT - the gcp-workload-identity-federation-webhook
PR has been merged now and available in v0.4.0 release.
For posterity, I ended up swapping out the gcp-workload-identity-federation-webhook
tool for this one:
https://github.com/matheuscscp/gke-metadata-server
The latter works in a similar way to the native GKE metadata server, and was better supported for apps we were deploying to our clusters.
/kind feature
1. Describe IN DETAIL the feature/behavior/change you would like to see. GCP has support for IAM Roles using K8s service accounts, and I think it would be great if kOps could handle configuring this automatically. GKE Workload Identity docs.
kOps already supports AWS IAM Roles for service accounts docs. Example of kOps cluster spec stanza:
Ideally, I would define a similar stanza for
serviceAccountIssuerDiscovery
but with GCP specific valuesI've also found gcp-workload-identity-federation-webhook which does the same things as amazon-eks-pod-identity-webhook. Maybe kOps can add that to addons as well.
FR for AWS IAM Role for Service accounts - https://github.com/kubernetes/kops/issues/8264
2. Feel free to provide a design supporting your feature request.