// NewAPIServerCommand provides a CLI handler for the 'apiserver' command
func NewAPIServerCommand(name, fullName string, out io.Writer) *cobra.Command {
s := app.NewAPIServer()
cmd := &cobra.Command{
Use: name,
Short: "Launch Kubernetes apiserver (kube-apiserver)",
Long: apiserverLong,
Run: func(c *cobra.Command, args []string) {
startProfiler()
util.InitLogs()
defer util.FlushLogs()
if err := s.Run(pflag.CommandLine.Args()); err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
},
}
cmd.SetOutput(out)
flags := cmd.Flags()
//TODO: uncomment after picking up a newer cobra
//pflag.AddFlagSetToPFlagSet(flag, flags)
s.AddFlags(flags)
return cmd
}
// NewKubeAPIServer creates a new hyperkube Server object that includes the
// description and flags.
func NewKubeAPIServer() *Server {
s := kubeapiserver.NewAPIServer()
hks := Server{
SimpleUsage: "apiserver",
Long: "The main API entrypoint and interface to the storage system. The API server is also the focal point for all authorization decisions.",
Run: func(_ *Server, args []string) error {
return s.Run(args)
},
}
s.AddFlags(hks.Flags())
return &hks
}
func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
s := app.NewAPIServer()
s.AddFlags(pflag.CommandLine)
util.InitFlags()
util.InitLogs()
defer util.FlushLogs()
verflag.PrintAndExitIfRequested()
if err := s.Run(pflag.CommandLine.Args()); err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
}
func BuildKubernetesMasterConfig(options configapi.MasterConfig, requestContextMapper kapi.RequestContextMapper, kubeClient *kclient.Client) (*MasterConfig, error) {
if options.KubernetesMasterConfig == nil {
return nil, errors.New("insufficient information to build KubernetesMasterConfig")
}
// Connect and setup etcd interfaces
etcdClient, err := etcd.GetAndTestEtcdClient(options.EtcdClientInfo)
if err != nil {
return nil, err
}
ketcdHelper, err := master.NewEtcdHelper(etcdClient, options.EtcdStorageConfig.KubernetesStorageVersion, options.EtcdStorageConfig.KubernetesStoragePrefix)
if err != nil {
return nil, fmt.Errorf("Error setting up Kubernetes server storage: %v", err)
}
kubeletClientConfig := configapi.GetKubeletClientConfig(options)
kubeletClient, err := kclient.NewKubeletClient(kubeletClientConfig)
if err != nil {
return nil, fmt.Errorf("unable to configure Kubelet client: %v", err)
}
// in-order list of plug-ins that should intercept admission decisions
// TODO: Push node environment support to upstream in future
_, portString, err := net.SplitHostPort(options.ServingInfo.BindAddress)
if err != nil {
return nil, err
}
port, err := strconv.Atoi(portString)
if err != nil {
return nil, err
}
portRange, err := util.ParsePortRange(options.KubernetesMasterConfig.ServicesNodePortRange)
if err != nil {
return nil, err
}
podEvictionTimeout, err := time.ParseDuration(options.KubernetesMasterConfig.PodEvictionTimeout)
if err != nil {
return nil, fmt.Errorf("unable to parse PodEvictionTimeout: %v", err)
}
server := app.NewAPIServer()
server.EventTTL = 2 * time.Hour
server.PortalNet = util.IPNet(flagtypes.DefaultIPNet(options.KubernetesMasterConfig.ServicesSubnet))
server.ServiceNodePorts = *portRange
server.AdmissionControl = strings.Join([]string{
"NamespaceExists", "NamespaceLifecycle", "OriginPodNodeEnvironment", "LimitRanger", "ServiceAccount", "SecurityContextConstraint", "ResourceQuota",
}, ",")
// resolve extended arguments
// TODO: this should be done in config validation (along with the above) so we can provide
// proper errors
if err := cmdflags.Resolve(options.KubernetesMasterConfig.APIServerArguments, server.AddFlags); len(err) > 0 {
return nil, kerrors.NewAggregate(err)
}
cmserver := cmapp.NewCMServer()
cmserver.PodEvictionTimeout = podEvictionTimeout
// resolve extended arguments
// TODO: this should be done in config validation (along with the above) so we can provide
// proper errors
if err := cmdflags.Resolve(options.KubernetesMasterConfig.ControllerArguments, cmserver.AddFlags); len(err) > 0 {
return nil, kerrors.NewAggregate(err)
}
cloud, err := cloudprovider.InitCloudProvider(cmserver.CloudProvider, cmserver.CloudConfigFile)
if err != nil {
return nil, err
}
admissionController := admission.NewFromPlugins(kubeClient, strings.Split(server.AdmissionControl, ","), server.AdmissionControlConfigFile)
m := &master.Config{
PublicAddress: net.ParseIP(options.KubernetesMasterConfig.MasterIP),
ReadWritePort: port,
ReadOnlyPort: port,
EtcdHelper: ketcdHelper,
EventTTL: server.EventTTL,
//MinRequestTimeout: server.MinRequestTimeout,
PortalNet: (*net.IPNet)(&server.PortalNet),
ServiceNodePorts: server.ServiceNodePorts,
RequestContextMapper: requestContextMapper,
KubeletClient: kubeletClient,
APIPrefix: KubeAPIPrefix,
EnableCoreControllers: true,
MasterCount: options.KubernetesMasterConfig.MasterCount,
Authorizer: apiserver.NewAlwaysAllowAuthorizer(),
AdmissionControl: admissionController,
DisableV1Beta1: true,
DisableV1Beta2: true,
DisableV1Beta3: !configapi.HasKubernetesAPILevel(*options.KubernetesMasterConfig, "v1beta3"),
EnableV1: configapi.HasKubernetesAPILevel(*options.KubernetesMasterConfig, "v1"),
}
kmaster := &MasterConfig{
Options: *options.KubernetesMasterConfig,
KubeClient: kubeClient,
Master: m,
ControllerManager: cmserver,
CloudProvider: cloud,
}
return kmaster, nil
}
func ValidateAPIServerExtendedArguments(config api.ExtendedArguments) fielderrors.ValidationErrorList {
return ValidateExtendedArguments(config, kapp.NewAPIServer().AddFlags)
}