helm-external-secrets/docs/snippets/vault-token-store.yaml

apiVersion: external-secrets.io/v1alpha1
kind: SecretStore
metadata:
  name: vault-backend
  namespace: example
spec:
  provider:
    vault:
      server: "https://vault.acme.org"
      path: "secret"
      version: "v2"
      auth:
        # points to a secret that contains a vault token
        # https://www.vaultproject.io/docs/auth/token
        tokenSecretRef:
          name: "my-secret"
          namespace: "secret-admin"
          key: "vault-token"