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https://github.com/k3s-io/kubernetes.git
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Add demonstration of wiring nodeIPAMController config object
This commit is contained in:
cici37
parent
4729fa49e1
commit
7b0a6db097
@ -1,6 +1,8 @@
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rules:
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- selectorRegexp: k8s[.]io/kubernetes
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allowedPrefixes:
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- k8s.io/kubernetes/cmd/kube-controller-manager/app/options
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- k8s.io/kubernetes/cmd/kube-controller-manager/app/config
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- k8s.io/kubernetes/pkg/api/legacyscheme
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- k8s.io/kubernetes/pkg/api/service
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- k8s.io/kubernetes/pkg/api/v1/pod
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@ -35,3 +37,6 @@ rules:
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- k8s.io/kubernetes/pkg/util/node
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- k8s.io/kubernetes/pkg/util/parsers
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- k8s.io/kubernetes/pkg/util/taints
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- k8s.io/kubernetes/pkg/proxy/util
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- k8s.io/kubernetes/pkg/proxy/util/testing
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- k8s.io/kubernetes/pkg/util/sysctl
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@ -42,6 +42,7 @@ import (
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_ "k8s.io/component-base/metrics/prometheus/version" // for version metric registration
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genericcontrollermanager "k8s.io/controller-manager/app"
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"k8s.io/klog/v2"
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nodeipamcontrolleroptions "k8s.io/kubernetes/cmd/kube-controller-manager/app/options"
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nodeipamconfig "k8s.io/kubernetes/pkg/controller/nodeipam/config"
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// For existing cloud providers, the option to import legacy providers is still available.
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// e.g. _"k8s.io/legacy-cloud-providers/<provider>"
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@ -60,7 +61,33 @@ func main() {
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klog.Fatalf("unable to initialize command options: %v", err)
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}
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cloudInitializer := func(config *cloudcontrollerconfig.CompletedConfig) cloudprovider.Interface {
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controllerInitializers := app.DefaultInitFuncConstructors
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// Here is an example to remove the controller which is not needed.
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// e.g. remove the cloud-node-lifecycle controller which current cloud provider does not need.
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//delete(controllerInitializers, "cloud-node-lifecycle")
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// Here is an example to add an controller(NodeIpamController) which will be used by cloud provider
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// generate nodeIPAMConfig. Here is an sample code. Please pass the right parameter in your code.
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// If you do not need additional controller, please ignore.
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controllerInitializers["nodeipam"] = startNodeIpamControllerWrapper
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command := app.NewCloudControllerManagerCommand(cloudProviderName, ccmOptions, cloudInitializer, controllerInitializers)
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// TODO: once we switch everything over to Cobra commands, we can go back to calling
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// utilflag.InitFlags() (by removing its pflag.Parse() call). For now, we have to set the
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// normalize func and add the go flag set by hand.
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// Here is an sample
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pflag.CommandLine.SetNormalizeFunc(flag.WordSepNormalizeFunc)
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// utilflag.InitFlags()
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logs.InitLogs()
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defer logs.FlushLogs()
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if err := command.Execute(); err != nil {
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os.Exit(1)
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}
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}
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func cloudInitializer(config *cloudcontrollerconfig.CompletedConfig) cloudprovider.Interface {
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cloudConfigFile := config.ComponentConfig.KubeCloudShared.CloudProvider.CloudConfigFile
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// initialize cloud provider with the cloud provider name and config file provided
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cloud, err := cloudprovider.InitCloudProvider(cloudProviderName, cloudConfigFile)
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@ -87,42 +114,19 @@ func main() {
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}
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return cloud
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}
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controllerInitializers := app.DefaultInitFuncConstructors
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// Here is an example to remove the controller which is not needed.
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// e.g. remove the cloud-node-lifecycle controller which current cloud provider does not need.
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//delete(controllerInitializers, "cloud-node-lifecycle")
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// Here is an example to add an controller(NodeIpamController) which will be used by cloud provider
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// generate nodeIPAMConfig. Here is an sample code. Please pass the right parameter in your code.
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// If you do not need additional controller, please ignore.
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controllerInitializers["nodeipam"] = startNodeIpamControllerWrapper
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command := app.NewCloudControllerManagerCommand(ccmOptions, cloudInitializer, controllerInitializers)
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// TODO: once we switch everything over to Cobra commands, we can go back to calling
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// utilflag.InitFlags() (by removing its pflag.Parse() call). For now, we have to set the
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// normalize func and add the go flag set by hand.
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// Here is an sample
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pflag.CommandLine.SetNormalizeFunc(flag.WordSepNormalizeFunc)
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// utilflag.InitFlags()
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logs.InitLogs()
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defer logs.FlushLogs()
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if err := command.Execute(); err != nil {
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os.Exit(1)
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}
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}
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func startNodeIpamControllerWrapper(completedConfig *cloudcontrollerconfig.CompletedConfig, cloud cloudprovider.Interface) app.InitFunc {
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nodeIPAMConfig := nodeipamconfig.NodeIPAMControllerConfiguration{
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ServiceCIDR: "sample",
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SecondaryServiceCIDR: "sample",
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NodeCIDRMaskSize: 11,
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NodeCIDRMaskSizeIPv4: 11,
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NodeCIDRMaskSizeIPv6: 111,
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fs := pflag.NewFlagSet("fs", pflag.ContinueOnError)
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var nodeIPAMControllerOptions nodeipamcontrolleroptions.NodeIPAMControllerOptions
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nodeIPAMControllerOptions.AddFlags(fs)
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errors := nodeIPAMControllerOptions.Validate()
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if len(errors) > 0 {
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klog.Fatal("NodeIPAM controller values are not properly.")
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}
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var nodeIPAMConfig nodeipamconfig.NodeIPAMControllerConfiguration
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nodeIPAMControllerOptions.ApplyTo(&nodeIPAMConfig)
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return func(ctx genericcontrollermanager.ControllerContext) (http.Handler, bool, error) {
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return startNodeIpamController(completedConfig, nodeIPAMConfig, ctx, cloud)
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}
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@ -64,7 +64,7 @@ const (
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)
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// NewCloudControllerManagerCommand creates a *cobra.Command object with default parameters
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func NewCloudControllerManagerCommand(s *options.CloudControllerManagerOptions, cloudInitializer InitCloudFunc, initFuncConstructor map[string]InitFuncConstructor) *cobra.Command {
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func NewCloudControllerManagerCommand(cloudProviderName string, s *options.CloudControllerManagerOptions, cloudInitializer InitCloudFunc, initFuncConstructor map[string]InitFuncConstructor) *cobra.Command {
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cmd := &cobra.Command{
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Use: "cloud-controller-manager",
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@ -72,6 +72,11 @@ func NewCloudControllerManagerCommand(s *options.CloudControllerManagerOptions,
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the cloud specific control loops shipped with Kubernetes.`,
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Run: func(cmd *cobra.Command, args []string) {
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verflag.PrintAndExitIfRequested()
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cloudProviderFlag := cmd.Flags().Lookup("cloud-provider")
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if cloudProviderFlag.Value.String() == "" {
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cloudProviderFlag.Value.Set(cloudProviderName)
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}
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cliflag.PrintFlags(cmd.Flags())
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c, err := s.Config(ControllerNames(initFuncConstructor), ControllersDisabledByDefault.List())
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@ -130,8 +135,6 @@ the cloud specific control loops shipped with Kubernetes.`,
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return cmd
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}
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type InitCloudFunc func(config *cloudcontrollerconfig.CompletedConfig) cloudprovider.Interface
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// Run runs the ExternalCMServer. This should never exit.
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func Run(c *cloudcontrollerconfig.CompletedConfig, controllerInitializers map[string]InitFunc, stopCh <-chan struct{}) error {
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// To help debugging, immediately log version
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@ -262,11 +265,15 @@ func startControllers(ctx genericcontrollermanager.ControllerContext, c *cloudco
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select {}
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}
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// InitCloudFunc is used to initialize cloud
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type InitCloudFunc func(config *cloudcontrollerconfig.CompletedConfig) cloudprovider.Interface
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// InitFunc is used to launch a particular controller. It may run additional "should I activate checks".
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// Any error returned will cause the controller process to `Fatal`
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// The bool indicates whether the controller was enabled.
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type InitFunc func(ctx genericcontrollermanager.ControllerContext) (debuggingHandler http.Handler, enabled bool, err error)
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// InitFuncConstructor is used to construct InitFunc
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type InitFuncConstructor func(completedConfig *cloudcontrollerconfig.CompletedConfig, cloud cloudprovider.Interface) InitFunc
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// ControllerNames indicate the default controller we are known.
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@ -316,6 +323,7 @@ func startRouteControllerWrapper(completedConfig *cloudcontrollerconfig.Complete
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}
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}
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// DefaultInitFuncConstructors is a map of default named controller groups paired with InitFuncConstructor
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var DefaultInitFuncConstructors = map[string]InitFuncConstructor{
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"cloud-node": StartCloudNodeControllerWrapper,
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"cloud-node-lifecycle": startCloudNodeLifecycleControllerWrapper,
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@ -18,7 +18,7 @@ limitations under the License.
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// For an minimal working example, please refer to k8s.io/cloud-provider/sample/basic_main.go
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// For more details, please refer to k8s.io/kubernetes/cmd/cloud-controller-manager/main.go
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package sample
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package main
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import (
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"math/rand"
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@ -54,7 +54,23 @@ func main() {
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klog.Fatalf("unable to initialize command options: %v", err)
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}
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cloudInitializer := func(config *config.CompletedConfig) cloudprovider.Interface {
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command := app.NewCloudControllerManagerCommand(sampleCloudProviderName, ccmOptions, cloudInitializer, app.DefaultInitFuncConstructors)
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// TODO: once we switch everything over to Cobra commands, we can go back to calling
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// utilflag.InitFlags() (by removing its pflag.Parse() call). For now, we have to set the
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// normalize func and add the go flag set by hand.
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// Here is an sample
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pflag.CommandLine.SetNormalizeFunc(flag.WordSepNormalizeFunc)
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// utilflag.InitFlags()
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logs.InitLogs()
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defer logs.FlushLogs()
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if err := command.Execute(); err != nil {
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os.Exit(1)
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}
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}
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func cloudInitializer(config *config.CompletedConfig) cloudprovider.Interface {
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cloudConfigFile := config.ComponentConfig.KubeCloudShared.CloudProvider.CloudConfigFile
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// initialize cloud provider with the cloud provider name and config file provided
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cloud, err := cloudprovider.InitCloudProvider(sampleCloudProviderName, cloudConfigFile)
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@ -81,20 +97,4 @@ func main() {
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}
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return cloud
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}
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command := app.NewCloudControllerManagerCommand(ccmOptions, cloudInitializer, app.DefaultInitFuncConstructors)
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// TODO: once we switch everything over to Cobra commands, we can go back to calling
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// utilflag.InitFlags() (by removing its pflag.Parse() call). For now, we have to set the
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// normalize func and add the go flag set by hand.
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// Here is an sample
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pflag.CommandLine.SetNormalizeFunc(flag.WordSepNormalizeFunc)
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// utilflag.InitFlags()
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logs.InitLogs()
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defer logs.FlushLogs()
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if err := command.Execute(); err != nil {
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os.Exit(1)
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}
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}
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