5a54555f59
Automatic merge from submit-queue (batch tested with PRs 63049, 59731). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
re-enable nodeipam in kube-controller-manager
**What this PR does / why we need it**:
Re-enables nodeipam controller for external clouds. Also does a small refactor so that we don't need to pass in `allocateNodeCidr` into the controller.
In v1.10 we made a change (9187b343e1 (diff-f11913dc67d80d36b3d06a93f61c49cf) in https://github.com/kubernetes/kubernetes/pull/57492) where nodeipam would be disabled for any cluster that sets `--cloud-provider=external`. The original intention behind this was that the nodeipam controller is cloud specific for some clouds (only GCE at the moment) so it should be moved to the CCM (cloud controller manager). After some discussions with wg-cloud-provider it makes sense to re-enable nodeipam controller in KCM and have GCE CCM enable its own cloud-specific IPAM controller as part of [Initialize()](https://github.com/kubernetes/kubernetes/blob/master/pkg/cloudprovider/cloud.go#L33-L35). This would allow for GCE to run nodeipam in both KCM (by setting --cloud-provider=gce and --allocate-node-cidr) and in the CCM (once implemented in `Initialize()`) without disabling nodeipam in the KCM for all external clouds and avoids having to implement nodeipam in CCM.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
Re-enable nodeipam controller for external clouds.
```
407 lines
17 KiB
Go
407 lines
17 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 replication controllers, service endpoints and
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// nodes.
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//
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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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"strings"
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"time"
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"github.com/golang/glog"
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"k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/runtime/schema"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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cacheddiscovery "k8s.io/client-go/discovery/cached"
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"k8s.io/client-go/dynamic"
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clientset "k8s.io/client-go/kubernetes"
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"k8s.io/kubernetes/pkg/controller"
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endpointcontroller "k8s.io/kubernetes/pkg/controller/endpoint"
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"k8s.io/kubernetes/pkg/controller/garbagecollector"
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namespacecontroller "k8s.io/kubernetes/pkg/controller/namespace"
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nodeipamcontroller "k8s.io/kubernetes/pkg/controller/nodeipam"
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"k8s.io/kubernetes/pkg/controller/nodeipam/ipam"
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lifecyclecontroller "k8s.io/kubernetes/pkg/controller/nodelifecycle"
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"k8s.io/kubernetes/pkg/controller/podgc"
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replicationcontroller "k8s.io/kubernetes/pkg/controller/replication"
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resourcequotacontroller "k8s.io/kubernetes/pkg/controller/resourcequota"
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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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serviceaccountcontroller "k8s.io/kubernetes/pkg/controller/serviceaccount"
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ttlcontroller "k8s.io/kubernetes/pkg/controller/ttl"
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"k8s.io/kubernetes/pkg/controller/volume/attachdetach"
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"k8s.io/kubernetes/pkg/controller/volume/expand"
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persistentvolumecontroller "k8s.io/kubernetes/pkg/controller/volume/persistentvolume"
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"k8s.io/kubernetes/pkg/controller/volume/pvcprotection"
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"k8s.io/kubernetes/pkg/controller/volume/pvprotection"
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"k8s.io/kubernetes/pkg/features"
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"k8s.io/kubernetes/pkg/quota/generic"
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quotainstall "k8s.io/kubernetes/pkg/quota/install"
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"k8s.io/kubernetes/pkg/util/metrics"
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)
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func startServiceController(ctx ControllerContext) (bool, error) {
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serviceController, err := servicecontroller.New(
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ctx.Cloud,
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ctx.ClientBuilder.ClientOrDie("service-controller"),
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ctx.InformerFactory.Core().V1().Services(),
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ctx.InformerFactory.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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glog.Errorf("Failed to start service controller: %v", err)
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return false, nil
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}
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go serviceController.Run(ctx.Stop, int(ctx.ComponentConfig.ServiceController.ConcurrentServiceSyncs))
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return true, nil
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}
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func startNodeIpamController(ctx ControllerContext) (bool, error) {
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var clusterCIDR *net.IPNet = nil
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var serviceCIDR *net.IPNet = nil
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if !ctx.ComponentConfig.KubeCloudShared.AllocateNodeCIDRs {
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return false, nil
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}
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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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glog.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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if len(strings.TrimSpace(ctx.ComponentConfig.NodeIpamController.ServiceCIDR)) != 0 {
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_, serviceCIDR, err = net.ParseCIDR(ctx.ComponentConfig.NodeIpamController.ServiceCIDR)
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if err != nil {
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glog.Warningf("Unsuccessful parsing of service CIDR %v: %v", ctx.ComponentConfig.NodeIpamController.ServiceCIDR, err)
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}
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}
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nodeIpamController, err := nodeipamcontroller.NewNodeIpamController(
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ctx.InformerFactory.Core().V1().Nodes(),
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ctx.Cloud,
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ctx.ClientBuilder.ClientOrDie("node-controller"),
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clusterCIDR,
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serviceCIDR,
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int(ctx.ComponentConfig.NodeIpamController.NodeCIDRMaskSize),
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ipam.CIDRAllocatorType(ctx.ComponentConfig.KubeCloudShared.CIDRAllocatorType),
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)
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if err != nil {
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return true, err
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}
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go nodeIpamController.Run(ctx.Stop)
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return true, nil
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}
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func startNodeLifecycleController(ctx ControllerContext) (bool, error) {
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lifecycleController, err := lifecyclecontroller.NewNodeLifecycleController(
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ctx.InformerFactory.Core().V1().Pods(),
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ctx.InformerFactory.Core().V1().Nodes(),
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ctx.InformerFactory.Extensions().V1beta1().DaemonSets(),
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ctx.Cloud,
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ctx.ClientBuilder.ClientOrDie("node-controller"),
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ctx.ComponentConfig.KubeCloudShared.NodeMonitorPeriod.Duration,
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ctx.ComponentConfig.NodeLifecycleController.NodeStartupGracePeriod.Duration,
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ctx.ComponentConfig.NodeLifecycleController.NodeMonitorGracePeriod.Duration,
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ctx.ComponentConfig.NodeLifecycleController.PodEvictionTimeout.Duration,
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ctx.ComponentConfig.NodeLifecycleController.NodeEvictionRate,
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ctx.ComponentConfig.NodeLifecycleController.SecondaryNodeEvictionRate,
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ctx.ComponentConfig.NodeLifecycleController.LargeClusterSizeThreshold,
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ctx.ComponentConfig.NodeLifecycleController.UnhealthyZoneThreshold,
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ctx.ComponentConfig.NodeLifecycleController.EnableTaintManager,
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utilfeature.DefaultFeatureGate.Enabled(features.TaintBasedEvictions),
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utilfeature.DefaultFeatureGate.Enabled(features.TaintNodesByCondition),
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)
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if err != nil {
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return true, err
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}
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go lifecycleController.Run(ctx.Stop)
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return true, nil
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}
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func startRouteController(ctx ControllerContext) (bool, error) {
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if !ctx.ComponentConfig.KubeCloudShared.AllocateNodeCIDRs || !ctx.ComponentConfig.KubeCloudShared.ConfigureCloudRoutes {
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glog.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 false, nil
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}
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if ctx.Cloud == nil {
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glog.Warning("configure-cloud-routes is set, but no cloud provider specified. Will not configure cloud provider routes.")
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return false, nil
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}
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routes, ok := ctx.Cloud.Routes()
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if !ok {
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glog.Warning("configure-cloud-routes is set, but cloud provider does not support routes. Will not configure cloud provider routes.")
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return false, nil
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}
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_, clusterCIDR, err := net.ParseCIDR(ctx.ComponentConfig.KubeCloudShared.ClusterCIDR)
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if err != nil {
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glog.Warningf("Unsuccessful parsing of cluster CIDR %v: %v", ctx.ComponentConfig.KubeCloudShared.ClusterCIDR, err)
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}
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routeController := routecontroller.New(routes, ctx.ClientBuilder.ClientOrDie("route-controller"), ctx.InformerFactory.Core().V1().Nodes(), ctx.ComponentConfig.KubeCloudShared.ClusterName, clusterCIDR)
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go routeController.Run(ctx.Stop, ctx.ComponentConfig.KubeCloudShared.RouteReconciliationPeriod.Duration)
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return true, nil
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}
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func startPersistentVolumeBinderController(ctx ControllerContext) (bool, error) {
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params := persistentvolumecontroller.ControllerParameters{
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KubeClient: ctx.ClientBuilder.ClientOrDie("persistent-volume-binder"),
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SyncPeriod: ctx.ComponentConfig.PersistentVolumeBinderController.PVClaimBinderSyncPeriod.Duration,
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VolumePlugins: ProbeControllerVolumePlugins(ctx.Cloud, ctx.ComponentConfig.PersistentVolumeBinderController.VolumeConfiguration),
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Cloud: ctx.Cloud,
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ClusterName: ctx.ComponentConfig.KubeCloudShared.ClusterName,
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VolumeInformer: ctx.InformerFactory.Core().V1().PersistentVolumes(),
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ClaimInformer: ctx.InformerFactory.Core().V1().PersistentVolumeClaims(),
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ClassInformer: ctx.InformerFactory.Storage().V1().StorageClasses(),
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PodInformer: ctx.InformerFactory.Core().V1().Pods(),
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EnableDynamicProvisioning: ctx.ComponentConfig.PersistentVolumeBinderController.VolumeConfiguration.EnableDynamicProvisioning,
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}
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volumeController, volumeControllerErr := persistentvolumecontroller.NewController(params)
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if volumeControllerErr != nil {
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return true, fmt.Errorf("failed to construct persistentvolume controller: %v", volumeControllerErr)
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}
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go volumeController.Run(ctx.Stop)
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return true, nil
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}
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func startAttachDetachController(ctx ControllerContext) (bool, error) {
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if ctx.ComponentConfig.AttachDetachController.ReconcilerSyncLoopPeriod.Duration < time.Second {
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return true, fmt.Errorf("Duration time must be greater than one second as set via command line option reconcile-sync-loop-period.")
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}
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attachDetachController, attachDetachControllerErr :=
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attachdetach.NewAttachDetachController(
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ctx.ClientBuilder.ClientOrDie("attachdetach-controller"),
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ctx.InformerFactory.Core().V1().Pods(),
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ctx.InformerFactory.Core().V1().Nodes(),
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ctx.InformerFactory.Core().V1().PersistentVolumeClaims(),
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ctx.InformerFactory.Core().V1().PersistentVolumes(),
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ctx.Cloud,
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ProbeAttachableVolumePlugins(),
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GetDynamicPluginProber(ctx.ComponentConfig.PersistentVolumeBinderController.VolumeConfiguration),
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ctx.ComponentConfig.AttachDetachController.DisableAttachDetachReconcilerSync,
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ctx.ComponentConfig.AttachDetachController.ReconcilerSyncLoopPeriod.Duration,
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attachdetach.DefaultTimerConfig,
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)
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if attachDetachControllerErr != nil {
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return true, fmt.Errorf("failed to start attach/detach controller: %v", attachDetachControllerErr)
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}
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go attachDetachController.Run(ctx.Stop)
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return true, nil
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}
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func startVolumeExpandController(ctx ControllerContext) (bool, error) {
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if utilfeature.DefaultFeatureGate.Enabled(features.ExpandPersistentVolumes) {
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expandController, expandControllerErr := expand.NewExpandController(
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ctx.ClientBuilder.ClientOrDie("expand-controller"),
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ctx.InformerFactory.Core().V1().PersistentVolumeClaims(),
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ctx.InformerFactory.Core().V1().PersistentVolumes(),
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ctx.Cloud,
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ProbeExpandableVolumePlugins(ctx.ComponentConfig.PersistentVolumeBinderController.VolumeConfiguration))
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if expandControllerErr != nil {
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return true, fmt.Errorf("Failed to start volume expand controller : %v", expandControllerErr)
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}
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go expandController.Run(ctx.Stop)
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return true, nil
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}
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return false, nil
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}
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func startEndpointController(ctx ControllerContext) (bool, error) {
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go endpointcontroller.NewEndpointController(
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ctx.InformerFactory.Core().V1().Pods(),
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ctx.InformerFactory.Core().V1().Services(),
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ctx.InformerFactory.Core().V1().Endpoints(),
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ctx.ClientBuilder.ClientOrDie("endpoint-controller"),
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).Run(int(ctx.ComponentConfig.EndPointController.ConcurrentEndpointSyncs), ctx.Stop)
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return true, nil
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}
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func startReplicationController(ctx ControllerContext) (bool, error) {
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go replicationcontroller.NewReplicationManager(
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ctx.InformerFactory.Core().V1().Pods(),
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ctx.InformerFactory.Core().V1().ReplicationControllers(),
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ctx.ClientBuilder.ClientOrDie("replication-controller"),
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replicationcontroller.BurstReplicas,
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).Run(int(ctx.ComponentConfig.ReplicationController.ConcurrentRCSyncs), ctx.Stop)
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return true, nil
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}
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func startPodGCController(ctx ControllerContext) (bool, error) {
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go podgc.NewPodGC(
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ctx.ClientBuilder.ClientOrDie("pod-garbage-collector"),
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ctx.InformerFactory.Core().V1().Pods(),
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int(ctx.ComponentConfig.PodGCController.TerminatedPodGCThreshold),
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).Run(ctx.Stop)
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return true, nil
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}
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func startResourceQuotaController(ctx ControllerContext) (bool, error) {
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resourceQuotaControllerClient := ctx.ClientBuilder.ClientOrDie("resourcequota-controller")
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discoveryFunc := resourceQuotaControllerClient.Discovery().ServerPreferredNamespacedResources
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listerFuncForResource := generic.ListerFuncForResourceFunc(ctx.InformerFactory.ForResource)
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quotaConfiguration := quotainstall.NewQuotaConfigurationForControllers(listerFuncForResource)
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resourceQuotaControllerOptions := &resourcequotacontroller.ResourceQuotaControllerOptions{
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QuotaClient: resourceQuotaControllerClient.CoreV1(),
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ResourceQuotaInformer: ctx.InformerFactory.Core().V1().ResourceQuotas(),
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ResyncPeriod: controller.StaticResyncPeriodFunc(ctx.ComponentConfig.ResourceQuotaController.ResourceQuotaSyncPeriod.Duration),
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InformerFactory: ctx.InformerFactory,
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ReplenishmentResyncPeriod: ctx.ResyncPeriod,
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DiscoveryFunc: discoveryFunc,
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IgnoredResourcesFunc: quotaConfiguration.IgnoredResources,
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InformersStarted: ctx.InformersStarted,
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Registry: generic.NewRegistry(quotaConfiguration.Evaluators()),
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}
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if resourceQuotaControllerClient.CoreV1().RESTClient().GetRateLimiter() != nil {
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if err := metrics.RegisterMetricAndTrackRateLimiterUsage("resource_quota_controller", resourceQuotaControllerClient.CoreV1().RESTClient().GetRateLimiter()); err != nil {
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return true, err
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}
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}
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resourceQuotaController, err := resourcequotacontroller.NewResourceQuotaController(resourceQuotaControllerOptions)
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if err != nil {
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return false, err
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}
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go resourceQuotaController.Run(int(ctx.ComponentConfig.ResourceQuotaController.ConcurrentResourceQuotaSyncs), ctx.Stop)
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// Periodically the quota controller to detect new resource types
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go resourceQuotaController.Sync(discoveryFunc, 30*time.Second, ctx.Stop)
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return true, nil
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}
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func startNamespaceController(ctx ControllerContext) (bool, error) {
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// the namespace cleanup controller is very chatty. It makes lots of discovery calls and then it makes lots of delete calls
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// the ratelimiter negatively affects its speed. Deleting 100 total items in a namespace (that's only a few of each resource
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// including events), takes ~10 seconds by default.
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nsKubeconfig := ctx.ClientBuilder.ConfigOrDie("namespace-controller")
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nsKubeconfig.QPS *= 20
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nsKubeconfig.Burst *= 100
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namespaceKubeClient := clientset.NewForConfigOrDie(nsKubeconfig)
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dynamicClient, err := dynamic.NewForConfig(nsKubeconfig)
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if err != nil {
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return true, err
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}
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discoverResourcesFn := namespaceKubeClient.Discovery().ServerPreferredNamespacedResources
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namespaceController := namespacecontroller.NewNamespaceController(
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namespaceKubeClient,
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dynamicClient,
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discoverResourcesFn,
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ctx.InformerFactory.Core().V1().Namespaces(),
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ctx.ComponentConfig.NamespaceController.NamespaceSyncPeriod.Duration,
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v1.FinalizerKubernetes,
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)
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go namespaceController.Run(int(ctx.ComponentConfig.NamespaceController.ConcurrentNamespaceSyncs), ctx.Stop)
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return true, nil
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}
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func startServiceAccountController(ctx ControllerContext) (bool, error) {
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sac, err := serviceaccountcontroller.NewServiceAccountsController(
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ctx.InformerFactory.Core().V1().ServiceAccounts(),
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ctx.InformerFactory.Core().V1().Namespaces(),
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ctx.ClientBuilder.ClientOrDie("service-account-controller"),
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serviceaccountcontroller.DefaultServiceAccountsControllerOptions(),
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)
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if err != nil {
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return true, fmt.Errorf("error creating ServiceAccount controller: %v", err)
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}
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go sac.Run(1, ctx.Stop)
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return true, nil
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}
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func startTTLController(ctx ControllerContext) (bool, error) {
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go ttlcontroller.NewTTLController(
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ctx.InformerFactory.Core().V1().Nodes(),
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ctx.ClientBuilder.ClientOrDie("ttl-controller"),
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).Run(5, ctx.Stop)
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return true, nil
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}
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func startGarbageCollectorController(ctx ControllerContext) (bool, error) {
|
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if !ctx.ComponentConfig.GarbageCollectorController.EnableGarbageCollector {
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return false, nil
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}
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gcClientset := ctx.ClientBuilder.ClientOrDie("generic-garbage-collector")
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discoveryClient := cacheddiscovery.NewMemCacheClient(gcClientset.Discovery())
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config := ctx.ClientBuilder.ConfigOrDie("generic-garbage-collector")
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dynamicClient, err := dynamic.NewForConfig(config)
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if err != nil {
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return true, err
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}
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// Get an initial set of deletable resources to prime the garbage collector.
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deletableResources := garbagecollector.GetDeletableResources(discoveryClient)
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ignoredResources := make(map[schema.GroupResource]struct{})
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for _, r := range ctx.ComponentConfig.GarbageCollectorController.GCIgnoredResources {
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ignoredResources[schema.GroupResource{Group: r.Group, Resource: r.Resource}] = struct{}{}
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}
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garbageCollector, err := garbagecollector.NewGarbageCollector(
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dynamicClient,
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|
ctx.RESTMapper,
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deletableResources,
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ignoredResources,
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|
ctx.InformerFactory,
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|
ctx.InformersStarted,
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|
)
|
|
if err != nil {
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|
return true, fmt.Errorf("Failed to start the generic garbage collector: %v", err)
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|
}
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|
|
// Start the garbage collector.
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workers := int(ctx.ComponentConfig.GarbageCollectorController.ConcurrentGCSyncs)
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|
go garbageCollector.Run(workers, ctx.Stop)
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|
// Periodically refresh the RESTMapper with new discovery information and sync
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|
// the garbage collector.
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|
go garbageCollector.Sync(gcClientset.Discovery(), 30*time.Second, ctx.Stop)
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return true, nil
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|
}
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|
func startPVCProtectionController(ctx ControllerContext) (bool, error) {
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|
go pvcprotection.NewPVCProtectionController(
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|
ctx.InformerFactory.Core().V1().PersistentVolumeClaims(),
|
|
ctx.InformerFactory.Core().V1().Pods(),
|
|
ctx.ClientBuilder.ClientOrDie("pvc-protection-controller"),
|
|
utilfeature.DefaultFeatureGate.Enabled(features.StorageObjectInUseProtection),
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|
).Run(1, ctx.Stop)
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|
return true, nil
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|
}
|
|
|
|
func startPVProtectionController(ctx ControllerContext) (bool, error) {
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|
go pvprotection.NewPVProtectionController(
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|
ctx.InformerFactory.Core().V1().PersistentVolumes(),
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|
ctx.ClientBuilder.ClientOrDie("pv-protection-controller"),
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|
utilfeature.DefaultFeatureGate.Enabled(features.StorageObjectInUseProtection),
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).Run(1, ctx.Stop)
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return true, nil
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}
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