#262 Allow configure Jenkins master pod labels

pkg/apis/jenkins/v1alpha2/jenkins_types.go

@@ -269,6 +269,13 @@ type JenkinsMaster struct {
 	// +optional
 	AnnotationsDeprecated map[string]string `json:"masterAnnotations,omitempty"`
 
+	// Map of string keys and values that can be used to organize and categorize
+	// (scope and select) objects. May match selectors of replication controllers
+	// and services.
+	// More info: http://kubernetes.io/docs/user-guide/labels
+	// +optional
+	Labels map[string]string `json:"labels,omitempty"`
+
 	// NodeSelector is a selector which must be true for the pod to fit on a node.
 	// Selector which must match a node's labels for the pod to be scheduled on that node.
 	// More info: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/

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

@@ -303,6 +303,13 @@ func (in *JenkinsMaster) DeepCopyInto(out *JenkinsMaster) {
 			(*out)[key] = val
 		}
 	}
+	if in.Labels != nil {
+		in, out := &in.Labels, &out.Labels
+		*out = make(map[string]string, len(*in))
+		for key, val := range *in {
+			(*out)[key] = val
+		}
+	}
 	if in.NodeSelector != nil {
 		in, out := &in.NodeSelector, &out.NodeSelector
 		*out = make(map[string]string, len(*in))

pkg/controller/jenkins/configuration/base/reconcile.go

@@ -621,6 +621,12 @@ func (r *ReconcileJenkinsBaseConfiguration) checkForPodRecreation(currentJenkins
 			currentJenkinsMasterPod.Spec.NodeSelector, r.Configuration.Jenkins.Spec.Master.NodeSelector))
 	}
 
+	if !compareMap(r.Configuration.Jenkins.Spec.Master.Labels, currentJenkinsMasterPod.Labels) {
+		messages = append(messages, "Jenkins pod labels have changed")
+		verbose = append(verbose, fmt.Sprintf("Jenkins pod labels have changed, actual '%+v' required '%+v'",
+			currentJenkinsMasterPod.Labels, r.Configuration.Jenkins.Spec.Master.Labels))
+	}
+
 	if !compareMap(r.Configuration.Jenkins.Spec.Master.Annotations, currentJenkinsMasterPod.ObjectMeta.Annotations) {
 		messages = append(messages, "Jenkins pod annotations have changed")
 		verbose = append(verbose, fmt.Sprintf("Jenkins pod annotations have changed, actual '%+v' required '%+v'",

pkg/controller/jenkins/configuration/base/resources/pod.go

@@ -295,11 +295,26 @@ func GetJenkinsMasterPodName(jenkins v1alpha2.Jenkins) string {
 	return fmt.Sprintf("jenkins-%s", jenkins.Name)
 }
 
+// GetJenkinsMasterPodLabels returns Jenkins pod labels for given CR
+func GetJenkinsMasterPodLabels(jenkins v1alpha2.Jenkins) map[string]string {
+	var labels map[string]string
+	if jenkins.Spec.Master.Labels == nil {
+		labels = map[string]string{}
+	} else {
+		labels = jenkins.Spec.Master.Labels
+	}
+	for key, value := range BuildResourceLabels(&jenkins) {
+		labels[key] = value
+	}
+	return labels
+}
+
 // NewJenkinsMasterPod builds Jenkins Master Kubernetes Pod resource
 func NewJenkinsMasterPod(objectMeta metav1.ObjectMeta, jenkins *v1alpha2.Jenkins) *corev1.Pod {
 	serviceAccountName := objectMeta.Name
 	objectMeta.Annotations = jenkins.Spec.Master.Annotations
 	objectMeta.Name = GetJenkinsMasterPodName(*jenkins)
+	objectMeta.Labels = GetJenkinsMasterPodLabels(*jenkins)
 
 	return &corev1.Pod{
 		TypeMeta:   buildPodTypeMeta(),