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

apiVersion: external-secrets.io/v1
kind: SecretStore
metadata:
  name: vault-backend
  namespace: example
spec:
  provider:
    vault:
      server: "https://vault.acme.org"
      path: "secret"
      version: "v2"
      auth:
        # VaultUserPass authenticates with Vault using the UserPass auth mechanism
        # https://www.vaultproject.io/docs/auth/userpass
        userPass:
          # Path where the UserPass authentication backend is mounted
          path: "userpass"
          username: "username"
          secretRef:
            name: "my-secret"
            key: "password"