HashiCorp Vault Provider for Secrets Store CSI Driver

HashiCorp Vault provider for the Secrets Store CSI driver allows you to get secrets stored in Vault and use the Secrets Store CSI driver interface to mount them into Kubernetes pods.

This project is currently supported as a Beta product, but relies on Alpha Kubernetes APIs and the CSI secrets store driver which is also Alpha. Where possible we will provide upgrade paths and deprecation notices for future releases, but cannot guarantee a stable API.

Installation

Prerequisites

• Kubernetes 1.16+ for both the master and worker nodes (Linux-only)
• Secrets store CSI driver installed
• TokenRequest endpoint available, which requires setting the flags --service-account-signing-key-file and --service-account-issuer for kube-apiserver. Set by default from 1.20+ and earlier in most managed services.

Using helm

The recommended installation method is via helm 3:

helm repo add hashicorp https://helm.releases.hashicorp.com
# Just installs Vault CSI provider. Adjust `server.enabled` and `injector.enabled`
# if you also want helm to install Vault and the Vault Agent injector.
helm install vault hashicorp/vault \
  --set "server.enabled=false" \
  --set "injector.enabled=false" \
  --set "csi.enabled=true"

Using yaml

You can also install using the deployment config in the deployment folder:

kubectl apply -f deployment/vault-csi-provider.yaml

Usage

See the learn tutorial and documentation pages for full details of deploying, configuring and using Vault CSI provider. The integration tests in test/bats/provider.bats also provide a good set of fully worked and tested examples to build on.

Troubleshooting

To troubleshoot issues with Vault CSI provider, look at logs from the Vault CSI provider pod running on the same node as your application pod:

kubectl get pods -o wide
# find the Vault CSI provider pod running on the same node as your application pod

kubectl logs vault-csi-provider-7x44t

Pass --debug=true to the provider to get more detailed logs. When installing via helm, you can achieve this with --set "csi.debug=true".