Support custom list of services to be added to /etc/hosts in cluster DNS operator - RFE-4145

Author: t-cas

openapi/generated_openapi/zz_generated.openapi.go

@@ -28842,6 +28842,14 @@
           "default": {},
           "$ref": "#/definitions/com.github.openshift.api.operator.v1.DNSNodePlacement"
         },
+        "nodeServices": {
+          "description": "nodeServices specifies K8s services for which entries should be added to /etc/hosts by the node resolver. These services will be added in addition to the default \"image-registry.openshift-image-registry.svc\" service. Each service should be a relative name following the format \"<service>.<namespace>.svc\"; for each relative name, an alias with the CLUSTER_DOMAIN suffix will also be added.",
+          "type": "array",
+          "items": {
+            "type": "string",
+            "default": ""
+          }
+        },
         "operatorLogLevel": {
           "description": "operatorLogLevel controls the logging level of the DNS Operator. Valid values are: \"Normal\", \"Debug\", \"Trace\". Defaults to \"Normal\". setting operatorLogLevel: Trace will produce extremely verbose logs.",
           "type": "string"

openapi/openapi.json

@@ -95,6 +95,17 @@ type DNSSpec struct {
 	// +kubebuilder:default=Normal
 	OperatorLogLevel DNSLogLevel `json:"operatorLogLevel,omitempty"`
 
+	// nodeServices specifies K8s services for which entries should be added
+	// to /etc/hosts by the node resolver. These services will be added in addition to
+	// the default "image-registry.openshift-image-registry.svc" service.
+	// Each service should be a relative name following the format "<service>.<namespace>.svc";
+	// for each relative name, an alias with the CLUSTER_DOMAIN suffix will also be added.
+	//
+	// +optional
+	// +kubebuilder:validation:MaxItems=20
+	// +kubebuilder:validation:items:Pattern=`^[a-z0-9]([-a-z0-9]*[a-z0-9])?\.[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.svc)?$`
+	NodeServices []string `json:"nodeServices,omitempty"`
+
 	// logLevel describes the desired logging verbosity for CoreDNS.
 	// Any one of the following values may be specified:
 	// * Normal logs errors from upstream resolvers.

operator/v1/types_dns.go

@@ -191,6 +191,18 @@ spec:
                       type: object
                     type: array
                 type: object
+              nodeServices:
+                description: |-
+                  nodeServices specifies K8s services for which entries should be added
+                  to /etc/hosts by the node resolver. These services will be added in addition to
+                  the default "image-registry.openshift-image-registry.svc" service.
+                  Each service should be a relative name following the format "<service>.<namespace>.svc";
+                  for each relative name, an alias with the CLUSTER_DOMAIN suffix will also be added.
+                items:
+                  pattern: ^[a-z0-9]([-a-z0-9]*[a-z0-9])?\.[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.svc)?$
+                  type: string
+                maxItems: 20
+                type: array
               operatorLogLevel:
                 default: Normal
                 description: |-

operator/v1/zz_generated.crd-manifests/0000_70_dns_00_dnses.crd.yaml

@@ -192,6 +192,18 @@ spec:
                       type: object
                     type: array
                 type: object
+              nodeServices:
+                description: |-
+                  nodeServices specifies K8s services for which entries should be added
+                  to /etc/hosts by the node resolver. These services will be added in addition to
+                  the default "image-registry.openshift-image-registry.svc" service.
+                  Each service should be a relative name following the format "<service>.<namespace>.svc";
+                  for each relative name, an alias with the CLUSTER_DOMAIN suffix will also be added.
+                items:
+                  pattern: ^[a-z0-9]([-a-z0-9]*[a-z0-9])?\.[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.svc)?$
+                  type: string
+                maxItems: 20
+                type: array
               operatorLogLevel:
                 default: Normal
                 description: |-