reuse func getNodeIP

cmd/kube-proxy/app/server.go

@@ -22,7 +22,6 @@ import (
 	"errors"
 	"fmt"
 	"io/ioutil"
-	"net"
 	"net/http"
 	"os"
 	goruntime "runtime"
@@ -31,7 +30,6 @@ import (
 
 	"k8s.io/api/core/v1"
 	apimachineryconfig "k8s.io/apimachinery/pkg/apis/config"
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/serializer"
 	"k8s.io/apimachinery/pkg/runtime/serializer/json"
@@ -67,7 +65,6 @@ import (
 	utilipset "k8s.io/kubernetes/pkg/util/ipset"
 	utiliptables "k8s.io/kubernetes/pkg/util/iptables"
 	utilipvs "k8s.io/kubernetes/pkg/util/ipvs"
-	utilnode "k8s.io/kubernetes/pkg/util/node"
 	"k8s.io/kubernetes/pkg/util/oom"
 	"k8s.io/kubernetes/pkg/util/resourcecontainer"
 	"k8s.io/kubernetes/pkg/version"
@@ -596,18 +593,3 @@ func getConntrackMax(config kubeproxyconfig.KubeProxyConntrackConfiguration) (in
 	}
 	return 0, nil
 }
-
-func getNodeIP(client clientset.Interface, hostname string) net.IP {
-	var nodeIP net.IP
-	node, err := client.CoreV1().Nodes().Get(hostname, metav1.GetOptions{})
-	if err != nil {
-		glog.Warningf("Failed to retrieve node info: %v", err)
-		return nil
-	}
-	nodeIP, err = utilnode.GetNodeHostIP(node)
-	if err != nil {
-		glog.Warningf("Failed to retrieve node IP: %v", err)
-		return nil
-	}
-	return nodeIP
-}

cmd/kube-proxy/app/server_others.go

@@ -142,7 +142,7 @@ func newProxyServer(
 	proxyMode := getProxyMode(string(config.Mode), iptInterface, kernelHandler, ipsetInterface, iptables.LinuxKernelCompatTester{})
 	nodeIP := net.ParseIP(config.BindAddress)
 	if nodeIP.IsUnspecified() {
-		nodeIP = getNodeIP(client, hostname)
+		nodeIP = utilnode.GetNodeIP(client, hostname)
 	}
 	if proxyMode == proxyModeIPTables {
 		glog.V(0).Info("Using iptables Proxier.")

cmd/kube-proxy/app/server_windows.go

@@ -107,7 +107,7 @@ func newProxyServer(config *proxyconfigapi.KubeProxyConfiguration, cleanupAndExi
 			int(*config.IPTables.MasqueradeBit),
 			config.ClusterCIDR,
 			hostname,
-			getNodeIP(client, hostname),
+			utilnode.GetNodeIP(client, hostname),
 			recorder,
 			healthzUpdater,
 		)

pkg/kubemark/hollow_proxy.go

@@ -18,11 +18,9 @@ package kubemark
 
 import (
 	"fmt"
-	"net"
 	"time"
 
 	"k8s.io/api/core/v1"
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
 	clientset "k8s.io/client-go/kubernetes"
 	v1core "k8s.io/client-go/kubernetes/typed/core/v1"
@@ -90,7 +88,7 @@ func NewHollowProxyOrDie(
 			0,
 			"10.0.0.0/8",
 			nodeName,
-			getNodeIP(client, nodeName),
+			utilnode.GetNodeIP(client, nodeName),
 			recorder,
 			nil,
 			[]string{},
@@ -138,18 +136,3 @@ func (hp *HollowProxy) Run() {
 		glog.Fatalf("Error while running proxy: %v\n", err)
 	}
 }
-
-func getNodeIP(client clientset.Interface, hostname string) net.IP {
-	var nodeIP net.IP
-	node, err := client.CoreV1().Nodes().Get(hostname, metav1.GetOptions{})
-	if err != nil {
-		glog.Warningf("Failed to retrieve node info: %v", err)
-		return nil
-	}
-	nodeIP, err = utilnode.GetNodeHostIP(node)
-	if err != nil {
-		glog.Warningf("Failed to retrieve node IP: %v", err)
-		return nil
-	}
-	return nodeIP
-}

pkg/util/node/node.go

@@ -24,6 +24,8 @@ import (
 	"strings"
 	"time"
 
+	"github.com/golang/glog"
+
 	"k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
@@ -91,6 +93,22 @@ func GetNodeHostIP(node *v1.Node) (net.IP, error) {
 	return nil, fmt.Errorf("host IP unknown; known addresses: %v", addresses)
 }
 
+// GetNodeIP returns the ip of node with the provided hostname
+func GetNodeIP(client clientset.Interface, hostname string) net.IP {
+	var nodeIP net.IP
+	node, err := client.CoreV1().Nodes().Get(hostname, metav1.GetOptions{})
+	if err != nil {
+		glog.Warningf("Failed to retrieve node info: %v", err)
+		return nil
+	}
+	nodeIP, err = GetNodeHostIP(node)
+	if err != nil {
+		glog.Warningf("Failed to retrieve node IP: %v", err)
+		return nil
+	}
+	return nodeIP
+}
+
 // GetZoneKey is a helper function that builds a string identifier that is unique per failure-zone;
 // it returns empty-string for no zone.
 func GetZoneKey(node *v1.Node) string {