Merge pull request #1582 from vmware-tanzu/jtc/1547-poc

Add external certificate management for the Concierge Impersonation Proxy

apis/concierge/config/v1alpha1/types_credentialissuer.go.tmpl

@@ -1,4 +1,4 @@
-// Copyright 2020-2022 the Pinniped contributors. All Rights Reserved.
+// Copyright 2020-2023 the Pinniped contributors. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 
 package v1alpha1
@@ -80,6 +80,28 @@ const (
 	ImpersonationProxyServiceTypeNone = ImpersonationProxyServiceType("None")
 )
 
+// ImpersonationProxyTLSSpec contains information about how the Concierge impersonation proxy should
+// serve TLS.
+//
+// If CertificateAuthorityData is not provided, the Concierge impersonation proxy will check the secret
+// for a field called "ca.crt", which will be used as the CertificateAuthorityData.
+//
+// If neither CertificateAuthorityData nor ca.crt is provided, no CA bundle will be advertised for
+// the impersonation proxy endpoint.
+type ImpersonationProxyTLSSpec struct {
+	// X.509 Certificate Authority (base64-encoded PEM bundle).
+	// Used to advertise the CA bundle for the impersonation proxy endpoint.
+	//
+	// +optional
+	CertificateAuthorityData string `json:"certificateAuthorityData,omitempty"`
+
+	// SecretName is the name of a Secret in the same namespace, of type `kubernetes.io/tls`, which contains
+	// the TLS serving certificate for the Concierge impersonation proxy endpoint.
+	//
+	// +kubebuilder:validation:MinLength=1
+	SecretName string `json:"secretName,omitempty"`
+}
+
 // ImpersonationProxySpec describes the intended configuration of the Concierge impersonation proxy.
 type ImpersonationProxySpec struct {
 	// Mode configures whether the impersonation proxy should be started:
@@ -100,6 +122,13 @@ type ImpersonationProxySpec struct {
 	//
 	// +optional
 	ExternalEndpoint string `json:"externalEndpoint,omitempty"`
+
+	// TLS contains information about how the Concierge impersonation proxy should serve TLS.
+	//
+	// If this field is empty, the impersonation proxy will generate its own TLS certificate.
+	//
+	// +optional
+	TLS *ImpersonationProxyTLSSpec `json:"tls,omitempty"`
 }
 
 // ImpersonationProxyServiceSpec describes how the Concierge should provision a Service to expose the impersonation proxy.

deploy/concierge/config.concierge.pinniped.dev_credentialissuers.yaml

@@ -103,6 +103,24 @@ spec:
                         - None
                         type: string
                     type: object
+                  tls:
+                    description: "TLS contains information about how the Concierge
+                      impersonation proxy should serve TLS. \n If this field is empty,
+                      the impersonation proxy will generate its own TLS certificate."
+                    properties:
+                      certificateAuthorityData:
+                        description: X.509 Certificate Authority (base64-encoded PEM
+                          bundle). Used to advertise the CA bundle for the impersonation
+                          proxy endpoint.
+                        type: string
+                      secretName:
+                        description: SecretName is the name of a Secret in the same
+                          namespace, of type `kubernetes.io/tls`, which contains the
+                          TLS serving certificate for the Concierge impersonation
+                          proxy endpoint.
+                        minLength: 1
+                        type: string
+                    type: object
                 required:
                 - mode
                 - service