kube-apiserver Encryption Configuration (v1)

Package v1 is the v1 version of the API.

Resource Types

• EncryptionConfiguration

EncryptionConfiguration

EncryptionConfiguration stores the complete configuration for encryption providers. It also allows the use of wildcards to specify the resources that should be encrypted. Use '.' to encrypt all resources within a group or '.' to encrypt all resources. '.' can be used to encrypt all resource in the core group. '.' will encrypt all resources, even custom resources that are added after API server start. Use of wildcards that overlap within the same resource list or across multiple entries are not allowed since part of the configuration would be ineffective. Resource lists are processed in order, with earlier lists taking precedence.

Example:

kind: EncryptionConfiguration
apiVersion: apiserver.config.k8s.io/v1
resources:
- resources:
  - events
  providers:
  - identity: {}  # do not encrypt events even though *.* is specified below
- resources:
  - secrets
  - configmaps
  - pandas.awesome.bears.example
  providers:
  - aescbc:
      keys:
      - name: key1
        secret: c2VjcmV0IGlzIHNlY3VyZQ==
- resources:
  - '*.apps'
  providers:
  - aescbc:
      keys:
      - name: key2
        secret: c2VjcmV0IGlzIHNlY3VyZSwgb3IgaXMgaXQ/Cg==
- resources:
  - '*.*'
  providers:
  - aescbc:
      keys:
      - name: key3
        secret: c2VjcmV0IGlzIHNlY3VyZSwgSSB0aGluaw==

Field	Description
apiVersion string	apiserver.config.k8s.io/v1
kind string	EncryptionConfiguration
resources [Required] []ResourceConfiguration	resources is a list containing resources, and their corresponding encryption providers.

AESConfiguration

Appears in:

• ProviderConfiguration

AESConfiguration contains the API configuration for an AES transformer.

Field	Description
keys [Required] []Key	keys is a list of keys to be used for creating the AES transformer. Each key has to be 32 bytes long for AES-CBC and 16, 24 or 32 bytes for AES-GCM.

IdentityConfiguration

Appears in:

• ProviderConfiguration

IdentityConfiguration is an empty struct to allow identity transformer in provider configuration.

KMSConfiguration

Appears in:

• ProviderConfiguration

KMSConfiguration contains the name, cache size and path to configuration file for a KMS based envelope transformer.

Field	Description
apiVersion string	apiVersion of KeyManagementService
name [Required] string	name is the name of the KMS plugin to be used.
cachesize int32	cachesize is the maximum number of secrets which are cached in memory. The default value is 1000. Set to a negative value to disable caching. This field is only allowed for KMS v1 providers.
endpoint [Required] string	endpoint is the gRPC server listening address, for example "unix:///var/run/kms-provider.sock".
timeout meta/v1.Duration	timeout for gRPC calls to kms-plugin (ex. 5s). The default is 3 seconds.

Key

Appears in:

• AESConfiguration

• SecretboxConfiguration

Key contains name and secret of the provided key for a transformer.

Field	Description
name [Required] string	name is the name of the key to be used while storing data to disk.
secret [Required] string	secret is the actual key, encoded in base64.

ProviderConfiguration

Appears in:

• ResourceConfiguration

ProviderConfiguration stores the provided configuration for an encryption provider.

Field	Description
aesgcm [Required] AESConfiguration	aesgcm is the configuration for the AES-GCM transformer.
aescbc [Required] AESConfiguration	aescbc is the configuration for the AES-CBC transformer.
secretbox [Required] SecretboxConfiguration	secretbox is the configuration for the Secretbox based transformer.
identity [Required] IdentityConfiguration	identity is the (empty) configuration for the identity transformer.
kms [Required] KMSConfiguration	kms contains the name, cache size and path to configuration file for a KMS based envelope transformer.

ResourceConfiguration

Appears in:

• EncryptionConfiguration

ResourceConfiguration stores per resource configuration.

Field	Description
resources [Required] []string	resources is a list of kubernetes resources which have to be encrypted. The resource names are derived from resource or resource.group of the group/version/resource. eg: pandas.awesome.bears.example is a custom resource with 'group': awesome.bears.example, 'resource': pandas. Use '.' to encrypt all resources and '.' to encrypt all resources in a specific group. eg: '.awesome.bears.example' will encrypt all resources in the group 'awesome.bears.example'. eg: '*.' will encrypt all resources in the core group (such as pods, configmaps, etc).
providers [Required] []ProviderConfiguration	providers is a list of transformers to be used for reading and writing the resources to disk. eg: aesgcm, aescbc, secretbox, identity, kms.

SecretboxConfiguration

Appears in:

• ProviderConfiguration

SecretboxConfiguration contains the API configuration for an Secretbox transformer.

Field	Description
keys [Required] []Key	keys is a list of keys to be used for creating the Secretbox transformer. Each key has to be 32 bytes long.