Revert "syncNetworkUtil in kubelet and fix loadbalancerSourceRange on GCE"

cmd/kube-proxy/app/server.go

@@ -204,7 +204,8 @@ func NewProxyServerDefault(config *options.ProxyServerConfig) (*ProxyServer, err
 			// IPTablesMasqueradeBit must be specified or defaulted.
 			return nil, fmt.Errorf("Unable to read IPTablesMasqueradeBit from config")
 		}
-		proxierIptables, err := iptables.NewProxier(iptInterface, execer, config.IPTablesSyncPeriod.Duration, config.MasqueradeAll, int(*config.IPTablesMasqueradeBit), config.ClusterCIDR, hostname, getNodeIP(client, hostname))
+
+		proxierIptables, err := iptables.NewProxier(iptInterface, execer, config.IPTablesSyncPeriod.Duration, config.MasqueradeAll, int(*config.IPTablesMasqueradeBit), config.ClusterCIDR, hostname)
 		if err != nil {
 			glog.Fatalf("Unable to create proxier: %v", err)
 		}
@@ -408,18 +409,3 @@ func tryIptablesProxy(iptver iptables.IptablesVersioner, kcompat iptables.Kernel
 func (s *ProxyServer) birthCry() {
 	s.Recorder.Eventf(s.Config.NodeRef, api.EventTypeNormal, "Starting", "Starting kube-proxy.")
 }
-
-func getNodeIP(client *kubeclient.Client, hostname string) net.IP {
-	var nodeIP net.IP
-	node, err := client.Nodes().Get(hostname)
-	if err != nil {
-		glog.Warningf("Failed to retrieve node info: %v", err)
-		return nil
-	}
-	nodeIP, err = nodeutil.GetNodeHostIP(node)
-	if err != nil {
-		glog.Warningf("Failed to retrieve node IP: %v", err)
-		return nil
-	}
-	return nodeIP
-}

cmd/kubelet/app/options/options.go

@@ -164,9 +164,6 @@ func (s *KubeletServer) AddFlags(fs *pflag.FlagSet) {
 	fs.StringVar(&s.ResolverConfig, "resolv-conf", s.ResolverConfig, "Resolver configuration file used as the basis for the container DNS resolution configuration.")
 	fs.BoolVar(&s.CPUCFSQuota, "cpu-cfs-quota", s.CPUCFSQuota, "Enable CPU CFS quota enforcement for containers that specify CPU limits")
 	fs.BoolVar(&s.EnableControllerAttachDetach, "enable-controller-attach-detach", s.EnableControllerAttachDetach, "Enables the Attach/Detach controller to manage attachment/detachment of volumes scheduled to this node, and disables kubelet from executing any attach/detach operations")
-	fs.BoolVar(&s.MakeIPTablesUtilChains, "make-iptables-util-chains", s.MakeIPTablesUtilChains, "If true, kubelet will ensure iptables utility rules are present on host.")
-	fs.Int32Var(&s.IPTablesMasqueradeBit, "iptables-masquerade-bit", s.IPTablesMasqueradeBit, "The bit of the fwmark space to mark packets for SNAT. Must be within the range [0, 31]. Please match this parameter with corresponding parameter in kube-proxy.")
-	fs.Int32Var(&s.IPTablesDropBit, "iptables-drop-bit", s.IPTablesDropBit, "The bit of the fwmark space to mark packets for dropping. Must be within the range [0, 31].")
 
 	// Flags intended for testing, not recommended used in production environments.
 	fs.BoolVar(&s.ReallyCrashForTesting, "really-crash-for-testing", s.ReallyCrashForTesting, "If true, when panics occur crash. Intended for testing.")

cmd/kubelet/app/server.go

@@ -199,18 +199,6 @@ func UnsecuredKubeletConfig(s *options.KubeletServer) (*KubeletConfig, error) {
 		Thresholds:               thresholds,
 	}
 
-	if s.MakeIPTablesUtilChains {
-		if s.IPTablesMasqueradeBit > 31 || s.IPTablesMasqueradeBit < 0 {
-			return nil, fmt.Errorf("iptables-masquerade-bit is not valid. Must be within [0, 31]")
-		}
-		if s.IPTablesDropBit > 31 || s.IPTablesDropBit < 0 {
-			return nil, fmt.Errorf("iptables-drop-bit is not valid. Must be within [0, 31]")
-		}
-		if s.IPTablesDropBit == s.IPTablesMasqueradeBit {
-			return nil, fmt.Errorf("iptables-masquerade-bit and iptables-drop-bit must be different")
-		}
-	}
-
 	return &KubeletConfig{
 		Address:                      net.ParseIP(s.Address),
 		AllowPrivileged:              s.AllowPrivileged,
@@ -293,13 +281,10 @@ func UnsecuredKubeletConfig(s *options.KubeletServer) (*KubeletConfig, error) {
 		HairpinMode:                    s.HairpinMode,
 		BabysitDaemons:                 s.BabysitDaemons,
 		ExperimentalFlannelOverlay:     s.ExperimentalFlannelOverlay,
-		NodeIP:                 net.ParseIP(s.NodeIP),
-		EvictionConfig:         evictionConfig,
-		PodsPerCore:            int(s.PodsPerCore),
-		ProtectKernelDefaults:  s.ProtectKernelDefaults,
-		MakeIPTablesUtilChains: s.MakeIPTablesUtilChains,
-		iptablesMasqueradeBit:  int(s.IPTablesMasqueradeBit),
-		iptablesDropBit:        int(s.IPTablesDropBit),
+		NodeIP:                net.ParseIP(s.NodeIP),
+		EvictionConfig:        evictionConfig,
+		PodsPerCore:           int(s.PodsPerCore),
+		ProtectKernelDefaults: s.ProtectKernelDefaults,
 	}, nil
 }
 
@@ -908,10 +893,8 @@ type KubeletConfig struct {
 	HairpinMode                string
 	BabysitDaemons             bool
 	Options                    []kubelet.Option
-	ProtectKernelDefaults      bool
-	MakeIPTablesUtilChains     bool
-	iptablesMasqueradeBit      int
-	iptablesDropBit            int
+
+	ProtectKernelDefaults bool
 }
 
 func CreateAndInitKubelet(kc *KubeletConfig) (k KubeletBootstrap, pc *config.PodConfig, err error) {
@@ -1009,9 +992,6 @@ func CreateAndInitKubelet(kc *KubeletConfig) (k KubeletBootstrap, pc *config.Pod
 		kc.EvictionConfig,
 		kc.Options,
 		kc.EnableControllerAttachDetach,
-		kc.MakeIPTablesUtilChains,
-		kc.iptablesMasqueradeBit,
-		kc.iptablesDropBit,
 	)
 
 	if err != nil {