//go:build windows // +build windows /* Copyright 2014 The Kubernetes Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ // Package app does all of the work necessary to configure and run a // Kubernetes app process. package app import ( "errors" "fmt" "net" goruntime "runtime" "strconv" // Enable pprof HTTP handlers. _ "net/http/pprof" v1 "k8s.io/api/core/v1" "k8s.io/apimachinery/pkg/types" "k8s.io/client-go/tools/events" "k8s.io/component-base/configz" "k8s.io/component-base/metrics" nodeutil "k8s.io/component-helpers/node/util" "k8s.io/klog/v2" "k8s.io/kubernetes/pkg/proxy" proxyconfigapi "k8s.io/kubernetes/pkg/proxy/apis/config" proxyconfigscheme "k8s.io/kubernetes/pkg/proxy/apis/config/scheme" "k8s.io/kubernetes/pkg/proxy/healthcheck" "k8s.io/kubernetes/pkg/proxy/winkernel" ) // NewProxyServer returns a new ProxyServer. func NewProxyServer(o *Options) (*ProxyServer, error) { return newProxyServer(o.config, o.master) } func newProxyServer(config *proxyconfigapi.KubeProxyConfiguration, master string) (*ProxyServer, error) { if config == nil { return nil, errors.New("config is required") } if c, err := configz.New(proxyconfigapi.GroupName); err == nil { c.Set(config) } else { return nil, fmt.Errorf("unable to register configz: %s", err) } if len(config.ShowHiddenMetricsForVersion) > 0 { metrics.SetShowHidden() } client, eventClient, err := createClients(config.ClientConnection, master) if err != nil { return nil, err } // Create event recorder hostname, err := nodeutil.GetHostname(config.HostnameOverride) if err != nil { return nil, err } nodeIP := detectNodeIP(client, hostname, config.BindAddress) klog.InfoS("Detected node IP", "IP", nodeIP.String()) eventBroadcaster := events.NewBroadcaster(&events.EventSinkImpl{Interface: client.EventsV1()}) recorder := eventBroadcaster.NewRecorder(proxyconfigscheme.Scheme, "kube-proxy") nodeRef := &v1.ObjectReference{ Kind: "Node", Name: hostname, UID: types.UID(hostname), Namespace: "", } var healthzServer healthcheck.ProxierHealthUpdater var healthzPort int if len(config.HealthzBindAddress) > 0 { healthzServer = healthcheck.NewProxierHealthServer(config.HealthzBindAddress, 2*config.IPTables.SyncPeriod.Duration, recorder, nodeRef) _, port, _ := net.SplitHostPort(config.HealthzBindAddress) healthzPort, _ = strconv.Atoi(port) } // Check if Kernel Space can be used. canUseWinKernelProxy, err := winkernel.CanUseWinKernelProxier(winkernel.WindowsKernelCompatTester{}) if !canUseWinKernelProxy && err != nil { return nil, err } var proxier proxy.Provider proxyMode := proxyconfigapi.ProxyModeKernelspace dualStackMode := getDualStackMode(config.Winkernel.NetworkName, winkernel.DualStackCompatTester{}) if dualStackMode { klog.InfoS("Creating dualStackProxier for Windows kernel.") proxier, err = winkernel.NewDualStackProxier( config.IPTables.SyncPeriod.Duration, config.IPTables.MinSyncPeriod.Duration, config.IPTables.MasqueradeAll, int(*config.IPTables.MasqueradeBit), config.ClusterCIDR, hostname, nodeIPTuple(config.BindAddress), recorder, healthzServer, config.Winkernel, healthzPort, ) } else { proxier, err = winkernel.NewProxier( config.IPTables.SyncPeriod.Duration, config.IPTables.MinSyncPeriod.Duration, config.IPTables.MasqueradeAll, int(*config.IPTables.MasqueradeBit), config.ClusterCIDR, hostname, nodeIP, recorder, healthzServer, config.Winkernel, healthzPort, ) } if err != nil { return nil, fmt.Errorf("unable to create proxier: %v", err) } winkernel.RegisterMetrics() return &ProxyServer{ Client: client, EventClient: eventClient, Proxier: proxier, Broadcaster: eventBroadcaster, Recorder: recorder, ProxyMode: proxyMode, NodeRef: nodeRef, MetricsBindAddress: config.MetricsBindAddress, BindAddressHardFail: config.BindAddressHardFail, EnableProfiling: config.EnableProfiling, OOMScoreAdj: config.OOMScoreAdj, ConfigSyncPeriod: config.ConfigSyncPeriod.Duration, HealthzServer: healthzServer, }, nil } func getDualStackMode(networkname string, compatTester winkernel.StackCompatTester) bool { return compatTester.DualStackCompatible(networkname) } func detectNumCPU() int { return goruntime.NumCPU() } // cleanupAndExit cleans up after a previous proxy run func cleanupAndExit() error { return errors.New("--cleanup-and-exit is not implemented on Windows") }