mirror of https://github.com/k3s-io/k3s
121 lines
4.6 KiB
Go
121 lines
4.6 KiB
Go
/*
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Copyright 2018 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 node controllers, service and
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// route controller, and so on.
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//
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package app
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import (
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"net"
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"net/http"
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"strings"
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cloudprovider "k8s.io/cloud-provider"
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"k8s.io/klog"
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cloudcontrollerconfig "k8s.io/kubernetes/cmd/cloud-controller-manager/app/config"
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cloudcontrollers "k8s.io/kubernetes/pkg/controller/cloud"
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routecontroller "k8s.io/kubernetes/pkg/controller/route"
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servicecontroller "k8s.io/kubernetes/pkg/controller/service"
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)
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func startCloudNodeController(ctx *cloudcontrollerconfig.CompletedConfig, cloud cloudprovider.Interface, stopCh <-chan struct{}) (http.Handler, bool, error) {
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// Start the CloudNodeController
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nodeController := cloudcontrollers.NewCloudNodeController(
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ctx.SharedInformers.Core().V1().Nodes(),
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// cloud node controller uses existing cluster role from node-controller
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ctx.ClientBuilder.ClientOrDie("node-controller"),
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cloud,
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ctx.ComponentConfig.NodeStatusUpdateFrequency.Duration)
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go nodeController.Run(stopCh)
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return nil, true, nil
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}
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func startCloudNodeLifecycleController(ctx *cloudcontrollerconfig.CompletedConfig, cloud cloudprovider.Interface, stopCh <-chan struct{}) (http.Handler, bool, error) {
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// Start the cloudNodeLifecycleController
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cloudNodeLifecycleController, err := cloudcontrollers.NewCloudNodeLifecycleController(
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ctx.SharedInformers.Core().V1().Nodes(),
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// cloud node lifecycle controller uses existing cluster role from node-controller
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ctx.ClientBuilder.ClientOrDie("node-controller"),
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cloud,
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ctx.ComponentConfig.KubeCloudShared.NodeMonitorPeriod.Duration,
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)
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if err != nil {
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klog.Warningf("failed to start cloud node lifecycle controller: %s", err)
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return nil, false, nil
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}
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go cloudNodeLifecycleController.Run(stopCh)
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return nil, true, nil
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}
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func startServiceController(ctx *cloudcontrollerconfig.CompletedConfig, cloud cloudprovider.Interface, stopCh <-chan struct{}) (http.Handler, bool, error) {
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// Start the service controller
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serviceController, err := servicecontroller.New(
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cloud,
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ctx.ClientBuilder.ClientOrDie("service-controller"),
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ctx.SharedInformers.Core().V1().Services(),
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ctx.SharedInformers.Core().V1().Nodes(),
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ctx.ComponentConfig.KubeCloudShared.ClusterName,
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)
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if err != nil {
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// This error shouldn't fail. It lives like this as a legacy.
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klog.Errorf("Failed to start service controller: %v", err)
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return nil, false, nil
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}
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go serviceController.Run(stopCh, int(ctx.ComponentConfig.ServiceController.ConcurrentServiceSyncs))
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return nil, true, nil
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}
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func startRouteController(ctx *cloudcontrollerconfig.CompletedConfig, cloud cloudprovider.Interface, stopCh <-chan struct{}) (http.Handler, bool, error) {
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if !ctx.ComponentConfig.KubeCloudShared.AllocateNodeCIDRs || !ctx.ComponentConfig.KubeCloudShared.ConfigureCloudRoutes {
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klog.Infof("Will not configure cloud provider routes for allocate-node-cidrs: %v, configure-cloud-routes: %v.", ctx.ComponentConfig.KubeCloudShared.AllocateNodeCIDRs, ctx.ComponentConfig.KubeCloudShared.ConfigureCloudRoutes)
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return nil, false, nil
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}
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// If CIDRs should be allocated for pods and set on the CloudProvider, then start the route controller
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routes, ok := cloud.Routes()
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if !ok {
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klog.Warning("configure-cloud-routes is set, but cloud provider does not support routes. Will not configure cloud provider routes.")
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return nil, false, nil
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}
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var clusterCIDR *net.IPNet
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var err error
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if len(strings.TrimSpace(ctx.ComponentConfig.KubeCloudShared.ClusterCIDR)) != 0 {
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_, clusterCIDR, err = net.ParseCIDR(ctx.ComponentConfig.KubeCloudShared.ClusterCIDR)
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if err != nil {
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klog.Warningf("Unsuccessful parsing of cluster CIDR %v: %v", ctx.ComponentConfig.KubeCloudShared.ClusterCIDR, err)
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}
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}
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routeController := routecontroller.New(
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routes,
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ctx.ClientBuilder.ClientOrDie("route-controller"),
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ctx.SharedInformers.Core().V1().Nodes(),
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ctx.ComponentConfig.KubeCloudShared.ClusterName,
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clusterCIDR,
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)
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go routeController.Run(stopCh, ctx.ComponentConfig.KubeCloudShared.RouteReconciliationPeriod.Duration)
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return nil, true, nil
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}
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