df4280651c
If we have a public & private zone with the same name (which is common on AWS), this means we can still create records. Also tighten up some of the logic to allow for zones with duplicate names.
212 lines
9.0 KiB
Go
212 lines
9.0 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// Package app implements a server that runs a set of active
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// components. This includes cluster controller
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package app
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import (
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"fmt"
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"net"
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"net/http"
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"net/http/pprof"
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"strconv"
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federationclientset "k8s.io/kubernetes/federation/client/clientset_generated/federation_release_1_5"
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"k8s.io/kubernetes/federation/cmd/federation-controller-manager/app/options"
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"k8s.io/kubernetes/federation/pkg/dnsprovider"
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clustercontroller "k8s.io/kubernetes/federation/pkg/federation-controller/cluster"
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configmapcontroller "k8s.io/kubernetes/federation/pkg/federation-controller/configmap"
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daemonset "k8s.io/kubernetes/federation/pkg/federation-controller/daemonset"
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deploymentcontroller "k8s.io/kubernetes/federation/pkg/federation-controller/deployment"
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ingresscontroller "k8s.io/kubernetes/federation/pkg/federation-controller/ingress"
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namespacecontroller "k8s.io/kubernetes/federation/pkg/federation-controller/namespace"
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replicasetcontroller "k8s.io/kubernetes/federation/pkg/federation-controller/replicaset"
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secretcontroller "k8s.io/kubernetes/federation/pkg/federation-controller/secret"
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servicecontroller "k8s.io/kubernetes/federation/pkg/federation-controller/service"
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"k8s.io/kubernetes/federation/pkg/federation-controller/util"
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"k8s.io/kubernetes/pkg/client/restclient"
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"k8s.io/kubernetes/pkg/client/unversioned/clientcmd"
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"k8s.io/kubernetes/pkg/healthz"
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"k8s.io/kubernetes/pkg/util/configz"
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"k8s.io/kubernetes/pkg/util/wait"
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"k8s.io/kubernetes/pkg/version"
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"github.com/golang/glog"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/spf13/cobra"
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"github.com/spf13/pflag"
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)
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const (
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// "federation-apiserver-kubeconfig" was the old name we used to
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// store Federation API server kubeconfig secret. We are
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// deprecating it in favor of `--kubeconfig` flag but giving people
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// time to migrate.
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// TODO(madhusudancs): this name is deprecated in 1.5 and should be
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// removed in 1.6. Remove it in 1.6.
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DeprecatedKubeconfigSecretName = "federation-apiserver-kubeconfig"
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)
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// NewControllerManagerCommand creates a *cobra.Command object with default parameters
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func NewControllerManagerCommand() *cobra.Command {
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s := options.NewCMServer()
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s.AddFlags(pflag.CommandLine)
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cmd := &cobra.Command{
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Use: "federation-controller-manager",
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Long: `The federation controller manager is a daemon that embeds
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the core control loops shipped with federation. In applications of robotics and
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automation, a control loop is a non-terminating loop that regulates the state of
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the system. In federation, a controller is a control loop that watches the shared
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state of the federation cluster through the apiserver and makes changes attempting
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to move the current state towards the desired state. Examples of controllers that
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ship with federation today is the cluster controller.`,
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Run: func(cmd *cobra.Command, args []string) {
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},
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}
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return cmd
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}
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// Run runs the CMServer. This should never exit.
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func Run(s *options.CMServer) error {
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glog.Infof("%+v", version.Get())
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if c, err := configz.New("componentconfig"); err == nil {
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c.Set(s.ControllerManagerConfiguration)
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} else {
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glog.Errorf("unable to register configz: %s", err)
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}
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// If s.Kubeconfig flag is empty, try with the deprecated name in 1.5.
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// TODO(madhusudancs): Remove this in 1.6.
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var restClientCfg *restclient.Config
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var err error
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if len(s.Kubeconfig) <= 0 {
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restClientCfg, err = restClientConfigFromSecret(s.Master)
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if err != nil {
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return err
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}
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} else {
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// Create the config to talk to federation-apiserver.
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restClientCfg, err = clientcmd.BuildConfigFromFlags(s.Master, s.Kubeconfig)
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if err != nil || restClientCfg == nil {
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// Retry with the deprecated name in 1.5.
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// TODO(madhusudancs): Remove this in 1.6.
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glog.V(2).Infof("Couldn't build the rest client config from flags: %v", err)
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glog.V(2).Infof("Trying with deprecated secret: %s", DeprecatedKubeconfigSecretName)
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restClientCfg, err = restClientConfigFromSecret(s.Master)
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if err != nil {
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return err
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}
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}
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}
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// Override restClientCfg qps/burst settings from flags
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restClientCfg.QPS = s.APIServerQPS
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restClientCfg.Burst = s.APIServerBurst
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go func() {
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mux := http.NewServeMux()
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healthz.InstallHandler(mux)
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if s.EnableProfiling {
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mux.HandleFunc("/debug/pprof/", pprof.Index)
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mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
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mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
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}
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mux.Handle("/metrics", prometheus.Handler())
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server := &http.Server{
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Addr: net.JoinHostPort(s.Address, strconv.Itoa(s.Port)),
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Handler: mux,
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}
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glog.Fatal(server.ListenAndServe())
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}()
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run := func() {
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err := StartControllers(s, restClientCfg)
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glog.Fatalf("error running controllers: %v", err)
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panic("unreachable")
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}
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run()
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panic("unreachable")
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}
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func StartControllers(s *options.CMServer, restClientCfg *restclient.Config) error {
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glog.Infof("Loading client config for cluster controller %q", "cluster-controller")
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ccClientset := federationclientset.NewForConfigOrDie(restclient.AddUserAgent(restClientCfg, "cluster-controller"))
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glog.Infof("Running cluster controller")
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go clustercontroller.NewclusterController(ccClientset, s.ClusterMonitorPeriod.Duration).Run()
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dns, err := dnsprovider.InitDnsProvider(s.DnsProvider, s.DnsConfigFile)
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if err != nil {
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glog.Fatalf("Cloud provider could not be initialized: %v", err)
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}
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glog.Infof("Loading client config for namespace controller %q", "namespace-controller")
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nsClientset := federationclientset.NewForConfigOrDie(restclient.AddUserAgent(restClientCfg, "namespace-controller"))
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namespaceController := namespacecontroller.NewNamespaceController(nsClientset)
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glog.Infof("Running namespace controller")
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namespaceController.Run(wait.NeverStop)
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secretcontrollerClientset := federationclientset.NewForConfigOrDie(restclient.AddUserAgent(restClientCfg, "secret-controller"))
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secretcontroller := secretcontroller.NewSecretController(secretcontrollerClientset)
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secretcontroller.Run(wait.NeverStop)
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configmapcontrollerClientset := federationclientset.NewForConfigOrDie(restclient.AddUserAgent(restClientCfg, "configmap-controller"))
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configmapcontroller := configmapcontroller.NewConfigMapController(configmapcontrollerClientset)
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configmapcontroller.Run(wait.NeverStop)
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daemonsetcontrollerClientset := federationclientset.NewForConfigOrDie(restclient.AddUserAgent(restClientCfg, "daemonset-controller"))
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daemonsetcontroller := daemonset.NewDaemonSetController(daemonsetcontrollerClientset)
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daemonsetcontroller.Run(wait.NeverStop)
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replicaSetClientset := federationclientset.NewForConfigOrDie(restclient.AddUserAgent(restClientCfg, replicasetcontroller.UserAgentName))
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replicaSetController := replicasetcontroller.NewReplicaSetController(replicaSetClientset)
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go replicaSetController.Run(s.ConcurrentReplicaSetSyncs, wait.NeverStop)
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deploymentClientset := federationclientset.NewForConfigOrDie(restclient.AddUserAgent(restClientCfg, deploymentcontroller.UserAgentName))
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deploymentController := deploymentcontroller.NewDeploymentController(deploymentClientset)
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// TODO: rename s.ConcurentReplicaSetSyncs
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go deploymentController.Run(s.ConcurrentReplicaSetSyncs, wait.NeverStop)
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glog.Infof("Loading client config for ingress controller %q", "ingress-controller")
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ingClientset := federationclientset.NewForConfigOrDie(restclient.AddUserAgent(restClientCfg, "ingress-controller"))
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ingressController := ingresscontroller.NewIngressController(ingClientset)
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glog.Infof("Running ingress controller")
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ingressController.Run(wait.NeverStop)
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glog.Infof("Loading client config for service controller %q", servicecontroller.UserAgentName)
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scClientset := federationclientset.NewForConfigOrDie(restclient.AddUserAgent(restClientCfg, servicecontroller.UserAgentName))
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servicecontroller := servicecontroller.New(scClientset, dns, s.FederationName, s.ServiceDnsSuffix, s.ZoneName, s.ZoneID)
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glog.Infof("Running service controller")
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if err := servicecontroller.Run(s.ConcurrentServiceSyncs, wait.NeverStop); err != nil {
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glog.Errorf("Failed to start service controller: %v", err)
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}
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select {}
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}
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// TODO(madhusudancs): Remove this in 1.6. This is only temporary to give an
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// upgrade path in 1.4/1.5.
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func restClientConfigFromSecret(master string) (*restclient.Config, error) {
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kubeconfigGetter := util.KubeconfigGetterForSecret(DeprecatedKubeconfigSecretName)
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restClientCfg, err := clientcmd.BuildConfigFromKubeconfigGetter(master, kubeconfigGetter)
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if err != nil {
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return nil, fmt.Errorf("failed to find the Federation API server kubeconfig, tried the --kubeconfig flag and the deprecated secret %s: %v", DeprecatedKubeconfigSecretName, err)
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}
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return restClientCfg, nil
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}
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