SecretReference

A SecretReference defines a mapping between external secret store entries and Kubernetes Secrets. It allows platform engineers to declaratively specify how secrets from external providers (like HashiCorp Vault, AWS Secrets Manager, etc.) should be synchronized into Kubernetes Secrets for use by applications.

API Version

openchoreo.dev/v1alpha1

Resource Definition

Metadata

SecretReferences are namespace-scoped resources.

apiVersion: openchoreo.dev/v1alpha1
kind: SecretReference
metadata:
  name: <secret-reference-name>
  namespace: <namespace>  # Namespace for grouping secret references

Spec Fields

Field	Type	Required	Default	Description
template	SecretTemplate	Yes	-	Defines the structure of the resulting Kubernetes Secret
data	[]SecretDataSource	Yes	-	Mapping of secret keys to external secret references (min: 1)
refreshInterval	duration	No	1h	How often to reconcile/refresh the secret from external stores

SecretTemplate

Defines the structure and metadata of the resulting Kubernetes Secret.

Field	Type	Required	Default	Description
type	string	No	Opaque	Type of the Kubernetes Secret
metadata	SecretMetadata	No	-	Additional metadata to add to the generated secret

Supported Secret Types

• Opaque - Arbitrary user-defined data (default)
• kubernetes.io/dockerconfigjson - Docker registry credentials
• kubernetes.io/dockercfg - Legacy Docker registry credentials
• kubernetes.io/basic-auth - Basic authentication credentials
• kubernetes.io/ssh-auth - SSH authentication credentials
• kubernetes.io/tls - TLS certificate and key
• bootstrap.kubernetes.io/token - Bootstrap token data

SecretMetadata

Additional metadata to add to the generated Kubernetes Secret.

Field	Type	Required	Default	Description
annotations	map[string]string	No	-	Annotations to add to the secret
labels	map[string]string	No	-	Labels to add to the secret

SecretDataSource

Maps a key in the Kubernetes Secret to a value from an external secret store.

Field	Type	Required	Default	Description
secretKey	string	Yes	-	Key name in the resulting Kubernetes Secret
remoteRef	RemoteReference	Yes	-	Reference to the external secret location

RemoteReference

Points to a specific secret in an external secret store.

Field	Type	Required	Default	Description
key	string	Yes	-	Path in the external secret store (e.g., secret/data/github/pat)
property	string	No	-	Specific field within the secret (e.g., token)
version	string	No	-	Version of the secret to fetch (provider-specific)

Status Fields

Field	Type	Default	Description
conditions	[]Condition	[]	Standard Kubernetes conditions tracking the sync state
lastRefreshTime	Time	-	When the secret reference was last processed/refreshed
secretStores	[]SecretStoreReference	[]	Tracks which secret stores are using this reference

SecretStoreReference

Tracks where this SecretReference is being used.

Field	Type	Description
name	string	Name of the secret store
namespace	string	Namespace where the ExternalSecret was created
kind	string	Kind of resource (ExternalSecret, ClusterExternalSecret)

Condition Types

Common condition types for SecretReference resources:

• Ready - Indicates if the secret has been successfully synchronized
• SecretSynced - Indicates if the secret data has been fetched from the external store

Examples

Basic Opaque Secret

apiVersion: openchoreo.dev/v1alpha1
kind: SecretReference
metadata:
  name: github-credentials
  namespace: default
spec:
  template:
    type: Opaque
  data:
    - secretKey: token
      remoteRef:
        key: secret/data/github/pat
        property: token

Docker Registry Credentials

apiVersion: openchoreo.dev/v1alpha1
kind: SecretReference
metadata:
  name: docker-registry-creds
  namespace: default
spec:
  template:
    type: kubernetes.io/dockerconfigjson
    metadata:
      labels:
        app: my-service
  data:
    - secretKey: .dockerconfigjson
      remoteRef:
        key: secret/data/docker/registry
        property: config
  refreshInterval: 30m

TLS Certificate

apiVersion: openchoreo.dev/v1alpha1
kind: SecretReference
metadata:
  name: api-tls-cert
  namespace: default
spec:
  template:
    type: kubernetes.io/tls
    metadata:
      annotations:
        cert-manager.io/common-name: api.example.com
  data:
    - secretKey: tls.crt
      remoteRef:
        key: secret/data/certs/api
        property: certificate
    - secretKey: tls.key
      remoteRef:
        key: secret/data/certs/api
        property: private_key

Database Credentials with Version

apiVersion: openchoreo.dev/v1alpha1
kind: SecretReference
metadata:
  name: database-credentials
  namespace: default
spec:
  template:
    type: Opaque
    metadata:
      labels:
        app: backend
        component: database
  data:
    - secretKey: username
      remoteRef:
        key: secret/data/db/postgres
        property: username
        version: "2"
    - secretKey: password
      remoteRef:
        key: secret/data/db/postgres
        property: password
        version: "2"
  refreshInterval: 15m

Multiple Secrets from Different Paths

apiVersion: openchoreo.dev/v1alpha1
kind: SecretReference
metadata:
  name: app-secrets
  namespace: default
spec:
  template:
    type: Opaque
  data:
    - secretKey: API_KEY
      remoteRef:
        key: secret/data/external-api/credentials
        property: api_key
    - secretKey: JWT_SECRET
      remoteRef:
        key: secret/data/auth/jwt
        property: secret
    - secretKey: ENCRYPTION_KEY
      remoteRef:
        key: secret/data/encryption/keys
        property: primary
  refreshInterval: 1h

Annotations

SecretReferences support the following annotations:

Annotation	Description
openchoreo.dev/display-name	Human-readable name for UI display
openchoreo.dev/description	Detailed description of the secret reference

Related Resources

• Workload - References SecretReference for injecting secrets into deployments
• ReleaseBinding - References SecretReference for environment-specific secret configuration