// RunProxy starts the proxy
func (c *NodeConfig) RunProxy() {
// initialize kube proxy
serviceConfig := pconfig.NewServiceConfig()
endpointsConfig := pconfig.NewEndpointsConfig()
host, _, err := net.SplitHostPort(c.BindAddress)
if err != nil {
glog.Fatalf("The provided value to bind to must be an ip:port %q", c.BindAddress)
}
ip := net.ParseIP(host)
if ip == nil {
glog.Fatalf("The provided value to bind to must be an ip:port: %q", c.BindAddress)
}
protocol := iptables.ProtocolIpv4
if ip.To4() == nil {
protocol = iptables.ProtocolIpv6
}
syncPeriod, err := time.ParseDuration(c.IPTablesSyncPeriod)
if err != nil {
glog.Fatalf("Cannot parse the provided ip-tables sync period (%s) : %v", c.IPTablesSyncPeriod, err)
}
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartRecordingToSink(c.Client.Events(""))
recorder := eventBroadcaster.NewRecorder(kapi.EventSource{Component: "kube-proxy", Host: c.KubeletConfig.NodeName})
nodeRef := &kapi.ObjectReference{
Kind: "Node",
Name: c.KubeletConfig.NodeName,
}
exec := kexec.New()
dbus := utildbus.New()
iptables := iptables.New(exec, dbus, protocol)
proxier, err := proxy.NewProxier(iptables, exec, syncPeriod, false)
if err != nil {
// This should be fatal, but that would break the integration tests
glog.Warningf("WARNING: Could not initialize Kubernetes Proxy. You must run this process as root to use the service proxy: %v", err)
return
}
iptables.AddReloadFunc(proxier.Sync)
pconfig.NewSourceAPI(
c.Client,
10*time.Minute,
serviceConfig.Channel("api"),
endpointsConfig.Channel("api"))
serviceConfig.RegisterHandler(proxier)
if c.FilteringEndpointsHandler == nil {
endpointsConfig.RegisterHandler(proxier)
} else {
c.FilteringEndpointsHandler.SetBaseEndpointsHandler(proxier)
endpointsConfig.RegisterHandler(c.FilteringEndpointsHandler)
}
recorder.Eventf(nodeRef, kapi.EventTypeNormal, "Starting", "Starting kube-proxy.")
glog.Infof("Started Kubernetes Proxy on %s", host)
}
// RunProxy starts the proxy
func (c *NodeConfig) RunProxy(endpointsFilterer FilteringEndpointsConfigHandler) {
// initialize kube proxy
serviceConfig := pconfig.NewServiceConfig()
endpointsConfig := pconfig.NewEndpointsConfig()
loadBalancer := proxy.NewLoadBalancerRR()
if endpointsFilterer == nil {
endpointsConfig.RegisterHandler(loadBalancer)
} else {
endpointsFilterer.SetBaseEndpointsHandler(loadBalancer)
endpointsConfig.RegisterHandler(endpointsFilterer)
}
host, _, err := net.SplitHostPort(c.BindAddress)
if err != nil {
glog.Fatalf("The provided value to bind to must be an ip:port %q", c.BindAddress)
}
ip := net.ParseIP(host)
if ip == nil {
glog.Fatalf("The provided value to bind to must be an ip:port: %q", c.BindAddress)
}
protocol := iptables.ProtocolIpv4
if ip.To4() == nil {
protocol = iptables.ProtocolIpv6
}
syncPeriod, err := time.ParseDuration(c.IPTablesSyncPeriod)
if err != nil {
glog.Fatalf("Cannot parse the provided ip-tables sync period (%s) : %v", c.IPTablesSyncPeriod, err)
}
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartRecordingToSink(c.Client.Events(""))
recorder := eventBroadcaster.NewRecorder(kapi.EventSource{Component: "kube-proxy", Host: c.KubeletConfig.NodeName})
nodeRef := &kapi.ObjectReference{
Kind: "Node",
Name: c.KubeletConfig.NodeName,
}
go util.Forever(func() {
dbus := utildbus.New()
iptables := iptables.New(kexec.New(), dbus, protocol)
proxier, err := proxy.NewProxier(loadBalancer, ip, iptables, util.PortRange{}, syncPeriod)
iptables.AddReloadFunc(proxier.Sync)
if err != nil {
switch {
// conflicting use of iptables, retry
case proxy.IsProxyLocked(err):
glog.Errorf("Unable to start proxy, will retry: %v", err)
return
// on a system without iptables
case strings.Contains(err.Error(), "executable file not found in path"):
glog.V(4).Infof("kube-proxy initialization error: %v", err)
glog.Warningf("WARNING: Could not find the iptables command. The service proxy requires iptables and will be disabled.")
case err == proxy.ErrProxyOnLocalhost:
glog.Warningf("WARNING: The service proxy cannot bind to localhost and will be disabled.")
case strings.Contains(err.Error(), "you must be root"):
glog.Warningf("WARNING: Could not modify iptables. You must run this process as root to use the service proxy.")
default:
glog.Warningf("WARNING: Could not modify iptables. You must run this process as root to use the service proxy: %v", err)
}
select {}
}
pconfig.NewSourceAPI(
c.Client,
10*time.Minute,
serviceConfig.Channel("api"),
endpointsConfig.Channel("api"))
serviceConfig.RegisterHandler(proxier)
recorder.Eventf(nodeRef, "Starting", "Starting kube-proxy.")
glog.Infof("Started Kubernetes Proxy on %s", host)
select {}
}, 5*time.Second)
}