func setInitDynamicDefaults(cfg *kubeadmapi.MasterConfiguration) error {
// Auto-detect the IP
if len(cfg.API.AdvertiseAddresses) == 0 {
ip, err := netutil.ChooseHostInterface()
if err != nil {
return err
}
cfg.API.AdvertiseAddresses = []string{ip.String()}
}
// Validate version argument
ver, err := kubeadmutil.KubernetesReleaseVersion(cfg.KubernetesVersion)
if err != nil {
if cfg.KubernetesVersion != kubeadmapiext.DefaultKubernetesVersion {
return err
} else {
ver = kubeadmapiext.DefaultKubernetesFallbackVersion
}
}
cfg.KubernetesVersion = ver
fmt.Println("[init] Using Kubernetes version:", ver)
// Omit the "v" in the beginning, otherwise semver will fail
// If the version is newer than the specified version, RBAC v1beta1 support is enabled in the apiserver so we can default to RBAC
k8sVersion, err := semver.Parse(cfg.KubernetesVersion[1:])
if k8sVersion.GT(allowAllMaxVersion) {
cfg.AuthorizationMode = "RBAC"
}
fmt.Println("[init] Using Authorization mode:", cfg.AuthorizationMode)
// Warn about the limitations with the current cloudprovider solution.
if cfg.CloudProvider != "" {
fmt.Println("[init] WARNING: For cloudprovider integrations to work --cloud-provider must be set for all kubelets in the cluster.")
fmt.Println("\t(/etc/systemd/system/kubelet.service.d/10-kubeadm.conf should be edited for this purpose)")
}
// Validate token if any, otherwise generate
if cfg.Discovery.Token != nil {
if cfg.Discovery.Token.ID != "" && cfg.Discovery.Token.Secret != "" {
fmt.Printf("[init] A token has been provided, validating [%s]\n", kubeadmutil.BearerToken(cfg.Discovery.Token))
if valid, err := kubeadmutil.ValidateToken(cfg.Discovery.Token); valid == false {
return err
}
} else {
fmt.Println("[init] A token has not been provided, generating one")
if err := kubeadmutil.GenerateToken(cfg.Discovery.Token); err != nil {
return err
}
}
// If there aren't any addresses specified, default to the first advertised address which can be user-provided or the default network interface's IP address
if len(cfg.Discovery.Token.Addresses) == 0 {
cfg.Discovery.Token.Addresses = []string{cfg.API.AdvertiseAddresses[0] + ":" + strconv.Itoa(kubeadmapiext.DefaultDiscoveryBindPort)}
}
}
return nil
}
func NewInit(cfgPath string, cfg *kubeadmapi.MasterConfiguration, skipPreFlight bool) (*Init, error) {
if cfgPath != "" {
b, err := ioutil.ReadFile(cfgPath)
if err != nil {
return nil, fmt.Errorf("unable to read config from %q [%v]", cfgPath, err)
}
if err := runtime.DecodeInto(api.Codecs.UniversalDecoder(), b, cfg); err != nil {
return nil, fmt.Errorf("unable to decode config from %q [%v]", cfgPath, err)
}
}
// Auto-detect the IP
if len(cfg.API.AdvertiseAddresses) == 0 {
// TODO(phase1+) perhaps we could actually grab eth0 and eth1
ip, err := netutil.ChooseHostInterface()
if err != nil {
return nil, err
}
cfg.API.AdvertiseAddresses = []string{ip.String()}
}
if !skipPreFlight {
fmt.Println("Running pre-flight checks")
err := preflight.RunInitMasterChecks(cfg)
if err != nil {
return nil, &preflight.PreFlightError{Msg: err.Error()}
}
} else {
fmt.Println("Skipping pre-flight checks")
}
// validate version argument
ver, err := kubeadmutil.KubernetesReleaseVersion(cfg.KubernetesVersion)
if err != nil {
if cfg.KubernetesVersion != kubeadmapiext.DefaultKubernetesVersion {
return nil, err
} else {
ver = kubeadmapiext.DefaultKubernetesFallbackVersion
}
}
cfg.KubernetesVersion = ver
fmt.Println("Using Kubernetes version:", ver)
// TODO(phase1+) create a custom flag
if cfg.CloudProvider != "" {
if cloudprovider.IsCloudProvider(cfg.CloudProvider) {
fmt.Printf("cloud provider %q initialized for the control plane. Remember to set the same cloud provider flag on the kubelet.\n", cfg.CloudProvider)
} else {
return nil, fmt.Errorf("cloud provider %q is not supported, you can use any of %v, or leave it unset.\n", cfg.CloudProvider, cloudprovider.CloudProviders())
}
}
return &Init{cfg: cfg}, nil
}
func NewInit(cfgPath string, cfg *kubeadmapi.MasterConfiguration, skipPreFlight bool) (*Init, error) {
if cfgPath != "" {
b, err := ioutil.ReadFile(cfgPath)
if err != nil {
return nil, fmt.Errorf("unable to read config from %q [%v]", cfgPath, err)
}
if err := runtime.DecodeInto(api.Codecs.UniversalDecoder(), b, cfg); err != nil {
return nil, fmt.Errorf("unable to decode config from %q [%v]", cfgPath, err)
}
}
// Auto-detect the IP
if len(cfg.API.AdvertiseAddresses) == 0 {
// TODO(phase1+) perhaps we could actually grab eth0 and eth1
ip, err := netutil.ChooseHostInterface()
if err != nil {
return nil, err
}
cfg.API.AdvertiseAddresses = []string{ip.String()}
}
if !skipPreFlight {
fmt.Println("Running pre-flight checks")
err := preflight.RunInitMasterChecks(cfg)
if err != nil {
return nil, &preflight.PreFlightError{Msg: err.Error()}
}
} else {
fmt.Println("Skipping pre-flight checks")
}
// validate version argument
ver, err := kubeadmutil.KubernetesReleaseVersion(cfg.KubernetesVersion)
if err != nil {
if cfg.KubernetesVersion != kubeadmapiext.DefaultKubernetesVersion {
return nil, err
} else {
ver = kubeadmapiext.DefaultKubernetesFallbackVersion
}
}
cfg.KubernetesVersion = ver
fmt.Println("Using Kubernetes version:", ver)
// Warn about the limitations with the current cloudprovider solution.
if cfg.CloudProvider != "" {
fmt.Println("WARNING: For cloudprovider integrations to work --cloud-provider must be set for all kubelets in the cluster.")
fmt.Println("\t(/etc/systemd/system/kubelet.service.d/10-kubeadm.conf should be edited for this purpose)")
}
return &Init{cfg: cfg}, nil
}
func NewInit(cfgPath string, cfg *kubeadmapi.MasterConfiguration, skipPreFlight bool) (*Init, error) {
fmt.Println("[kubeadm] WARNING: kubeadm is in alpha, please do not use it for production clusters.")
if cfgPath != "" {
b, err := ioutil.ReadFile(cfgPath)
if err != nil {
return nil, fmt.Errorf("unable to read config from %q [%v]", cfgPath, err)
}
if err := runtime.DecodeInto(api.Codecs.UniversalDecoder(), b, cfg); err != nil {
return nil, fmt.Errorf("unable to decode config from %q [%v]", cfgPath, err)
}
}
// Auto-detect the IP
if len(cfg.API.AdvertiseAddresses) == 0 {
ip, err := netutil.ChooseHostInterface()
if err != nil {
return nil, err
}
cfg.API.AdvertiseAddresses = []string{ip.String()}
}
if !skipPreFlight {
fmt.Println("[preflight] Running pre-flight checks")
// First, check if we're root separately from the other preflight checks and fail fast
if err := preflight.RunRootCheckOnly(); err != nil {
return nil, err
}
// Then continue with the others...
if err := preflight.RunInitMasterChecks(cfg); err != nil {
return nil, err
}
} else {
fmt.Println("[preflight] Skipping pre-flight checks")
}
// Try to start the kubelet service in case it's inactive
preflight.TryStartKubelet()
// validate version argument
ver, err := kubeadmutil.KubernetesReleaseVersion(cfg.KubernetesVersion)
if err != nil {
if cfg.KubernetesVersion != kubeadmapiext.DefaultKubernetesVersion {
return nil, err
} else {
ver = kubeadmapiext.DefaultKubernetesFallbackVersion
}
}
cfg.KubernetesVersion = ver
fmt.Println("[init] Using Kubernetes version:", ver)
// Warn about the limitations with the current cloudprovider solution.
if cfg.CloudProvider != "" {
fmt.Println("WARNING: For cloudprovider integrations to work --cloud-provider must be set for all kubelets in the cluster.")
fmt.Println("\t(/etc/systemd/system/kubelet.service.d/10-kubeadm.conf should be edited for this purpose)")
}
return &Init{cfg: cfg}, nil
}