feat: allow to setup CoreDNS pod annotations

Author: rsicart

k8s/crds/kops.k8s.io_clusters.yaml

@@ -3684,6 +3684,13 @@ spec:
                           Default: none
                         type: object
                     type: object
+                  podAnnotations:
+                    additionalProperties:
+                      type: string
+                    description: |-
+                      PodAnnotations makes possible to add additional annotations to CoreDNS Pods.
+                      Default: none
+                    type: object
                   provider:
                     description: Provider indicates whether CoreDNS or kube-dns will
                       be the default service discovery.

pkg/apis/kops/cluster.go

@@ -599,6 +599,9 @@ type KubeDNSConfig struct {
 	MemoryLimit *resource.Quantity `json:"memoryLimit,omitempty"`
 	// NodeLocalDNS specifies the configuration for the node-local-dns addon
 	NodeLocalDNS *NodeLocalDNSConfig `json:"nodeLocalDNS,omitempty"`
+	// PodAnnotations makes possible to add additional annotations to CoreDNS Pods.
+	// Default: none
+	PodAnnotations map[string]string `json:"podAnnotations,omitempty"`
 }
 
 // NodeLocalDNSConfig are options of the node-local-dns

pkg/apis/kops/v1alpha2/cluster.go

@@ -578,6 +578,9 @@ type KubeDNSConfig struct {
 	MemoryLimit *resource.Quantity `json:"memoryLimit,omitempty"`
 	// NodeLocalDNS specifies the configuration for the node-local-dns addon
 	NodeLocalDNS *NodeLocalDNSConfig `json:"nodeLocalDNS,omitempty"`
+	// PodAnnotations makes possible to add additional annotations to CoreDNS Pods.
+	// Default: none
+	PodAnnotations map[string]string `json:"podAnnotations,omitempty"`
 }
 
 // NodeLocalDNSConfig are options of the node-local-dns

pkg/apis/kops/v1alpha2/zz_generated.conversion.go

@@ -564,6 +564,9 @@ type KubeDNSConfig struct {
 	MemoryLimit *resource.Quantity `json:"memoryLimit,omitempty"`
 	// NodeLocalDNS specifies the configuration for the node-local-dns addon
 	NodeLocalDNS *NodeLocalDNSConfig `json:"nodeLocalDNS,omitempty"`
+	// PodAnnotations makes possible to add additional annotations to CoreDNS Pods.
+	// Default: none
+	PodAnnotations map[string]string `json:"podAnnotations,omitempty"`
 }
 
 // NodeLocalDNSConfig are options of the node-local-dns

pkg/apis/kops/v1alpha2/zz_generated.deepcopy.go

@@ -122,6 +122,12 @@ spec:
     metadata:
       labels:
         k8s-app: kube-dns
+      {{- if KubeDNS.PodAnnotations }}
+      annotations:
+        {{- range $key, $value := KubeDNS.PodAnnotations }}
+        {{ $key }}: "{{ $value }}"
+        {{- end }}
+      {{- end }}
     spec:
       priorityClassName: system-cluster-critical
       serviceAccountName: coredns