Example #1
0
// Run executes master node provisioning, including certificates, needed static pod manifests, etc.
func (i *Init) Run(out io.Writer) error {
	if err := kubemaster.CreateTokenAuthFile(&i.cfg.Secrets); err != nil {
		return err
	}

	if err := kubemaster.WriteStaticPodManifests(i.cfg); err != nil {
		return err
	}

	caKey, caCert, err := kubemaster.CreatePKIAssets(i.cfg)
	if err != nil {
		return err
	}

	kubeconfigs, err := kubemaster.CreateCertsAndConfigForClients(i.cfg.API, []string{"kubelet", "admin"}, caKey, caCert)
	if err != nil {
		return err
	}

	// kubeadm is responsible for writing the following kubeconfig file, which
	// kubelet should be waiting for. Help user avoid foot-shooting by refusing to
	// write a file that has already been written (the kubelet will be up and
	// running in that case - they'd need to stop the kubelet, remove the file, and
	// start it again in that case).
	// TODO(phase1+) this is no longer the right place to guard agains foo-shooting,
	// we need to decide how to handle existing files (it may be handy to support
	// importing existing files, may be we could even make our command idempotant,
	// or at least allow for external PKI and stuff)
	for name, kubeconfig := range kubeconfigs {
		if err := kubeadmutil.WriteKubeconfigIfNotExists(name, kubeconfig); err != nil {
			return err
		}
	}

	client, err := kubemaster.CreateClientAndWaitForAPI(kubeconfigs["admin"])
	if err != nil {
		return err
	}

	schedulePodsOnMaster := false
	if err := kubemaster.UpdateMasterRoleLabelsAndTaints(client, schedulePodsOnMaster); err != nil {
		return err
	}

	if err := kubemaster.CreateDiscoveryDeploymentAndSecret(i.cfg, client, caCert); err != nil {
		return err
	}

	if err := kubemaster.CreateEssentialAddons(i.cfg, client); err != nil {
		return err
	}

	data := joinArgsData{i.cfg, kubeadmapiext.DefaultAPIBindPort, kubeadmapiext.DefaultDiscoveryBindPort}
	if joinArgs, err := generateJoinArgs(data); err != nil {
		return err
	} else {
		fmt.Fprintf(out, initDoneMsgf, joinArgs)
	}
	return nil
}
Example #2
0
// Run executes master node provisioning, including certificates, needed static pod manifests, etc.
func (i *Init) Run(out io.Writer) error {

	// PHASE 1: Generate certificates
	caCert, err := certphase.CreatePKIAssets(i.cfg, kubeadmapi.GlobalEnvParams.HostPKIPath)
	if err != nil {
		return err
	}

	// PHASE 2: Generate kubeconfig files for the admin and the kubelet

	// TODO this is not great, but there is only one address we can use here
	// so we'll pick the first one, there is much of chance to have an empty
	// slice by the time this gets called
	masterEndpoint := fmt.Sprintf("https://%s:%d", i.cfg.API.AdvertiseAddresses[0], i.cfg.API.Port)
	err = kubeconfigphase.CreateAdminAndKubeletKubeConfig(masterEndpoint, kubeadmapi.GlobalEnvParams.HostPKIPath, kubeadmapi.GlobalEnvParams.KubernetesDir)
	if err != nil {
		return err
	}

	// TODO: It's not great to have an exception for token here, but necessary because the apiserver doesn't handle this properly in the API yet
	// but relies on files on disk for now, which is daunting.
	if i.cfg.Discovery.Token != nil {
		if err := kubemaster.CreateTokenAuthFile(kubeadmutil.BearerToken(i.cfg.Discovery.Token)); err != nil {
			return err
		}
	}

	// Phase 3: Bootstrap the control plane
	if err := kubemaster.WriteStaticPodManifests(i.cfg); err != nil {
		return err
	}

	client, err := kubemaster.CreateClientAndWaitForAPI(path.Join(kubeadmapi.GlobalEnvParams.KubernetesDir, kubeconfigphase.AdminKubeConfigFileName))
	if err != nil {
		return err
	}

	if i.cfg.AuthorizationMode == "RBAC" {
		err = apiconfig.CreateBootstrapRBACClusterRole(client)
		if err != nil {
			return err
		}

		err = apiconfig.CreateKubeDNSRBACClusterRole(client)
		if err != nil {
			return err
		}

		// TODO: remove this when https://github.com/kubernetes/kubeadm/issues/114 is fixed
		err = apiconfig.CreateKubeProxyClusterRoleBinding(client)
		if err != nil {
			return err
		}
	}

	if err := kubemaster.UpdateMasterRoleLabelsAndTaints(client, false); err != nil {
		return err
	}

	if i.cfg.Discovery.Token != nil {
		fmt.Printf("[token-discovery] Using token: %s\n", kubeadmutil.BearerToken(i.cfg.Discovery.Token))
		if err := kubemaster.CreateDiscoveryDeploymentAndSecret(i.cfg, client, caCert); err != nil {
			return err
		}
		if err := kubeadmutil.UpdateOrCreateToken(client, i.cfg.Discovery.Token, kubeadmutil.DefaultTokenDuration); err != nil {
			return err
		}
	}

	if err := kubemaster.CreateEssentialAddons(i.cfg, client); err != nil {
		return err
	}

	fmt.Fprintf(out, initDoneMsgf, generateJoinArgs(i.cfg))
	return nil
}
Example #3
0
// RunInit executes master node provisioning, including certificates, needed static pod manifests, etc.
func RunInit(out io.Writer, cmd *cobra.Command, args []string, cfg *kubeadmapi.MasterConfiguration) error {
	// 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 err
		}
		cfg.API.AdvertiseAddresses = []string{ip.String()}
	}

	// TODO(phase1+) create a custom flag
	if cfg.CloudProvider != "" {
		if cloudprovider.IsCloudProvider(cfg.CloudProvider) {
			fmt.Printf("<cmd/init> cloud provider %q initialized for the control plane. Remember to set the same cloud provider flag on the kubelet.\n", cfg.CloudProvider)
		} else {
			return fmt.Errorf("<cmd/init> cloud provider %q is not supported, you can use any of %v, or leave it unset.\n", cfg.CloudProvider, cloudprovider.CloudProviders())
		}
	}

	if err := kubemaster.CreateTokenAuthFile(&cfg.Secrets); err != nil {
		return err
	}

	if err := kubemaster.WriteStaticPodManifests(cfg); err != nil {
		return err
	}

	caKey, caCert, err := kubemaster.CreatePKIAssets(cfg)
	if err != nil {
		return err
	}

	kubeconfigs, err := kubemaster.CreateCertsAndConfigForClients(cfg.API.AdvertiseAddresses, []string{"kubelet", "admin"}, caKey, caCert)
	if err != nil {
		return err
	}

	// kubeadm is responsible for writing the following kubeconfig file, which
	// kubelet should be waiting for. Help user avoid foot-shooting by refusing to
	// write a file that has already been written (the kubelet will be up and
	// running in that case - they'd need to stop the kubelet, remove the file, and
	// start it again in that case).
	// TODO(phase1+) this is no longer the right place to guard agains foo-shooting,
	// we need to decide how to handle existing files (it may be handy to support
	// importing existing files, may be we could even make our command idempotant,
	// or at least allow for external PKI and stuff)
	for name, kubeconfig := range kubeconfigs {
		if err := kubeadmutil.WriteKubeconfigIfNotExists(name, kubeconfig); err != nil {
			return err
		}
	}

	client, err := kubemaster.CreateClientAndWaitForAPI(kubeconfigs["admin"])
	if err != nil {
		return err
	}

	schedulePodsOnMaster := false
	if err := kubemaster.UpdateMasterRoleLabelsAndTaints(client, schedulePodsOnMaster); err != nil {
		return err
	}

	if err := kubemaster.CreateDiscoveryDeploymentAndSecret(cfg, client, caCert); err != nil {
		return err
	}

	if err := kubemaster.CreateEssentialAddons(cfg, client); err != nil {
		return err
	}

	// TODO(phase1+) use templates to reference struct fields directly as order of args is fragile
	fmt.Fprintf(out, initDoneMsgf,
		cfg.Secrets.GivenToken,
		cfg.API.AdvertiseAddresses[0],
	)

	return nil
}
Example #4
0
// Run executes master node provisioning, including certificates, needed static pod manifests, etc.
func (i *Init) Run(out io.Writer) error {
	if err := kubemaster.CreateTokenAuthFile(&i.cfg.Secrets); err != nil {
		return err
	}

	if err := kubemaster.WriteStaticPodManifests(i.cfg); err != nil {
		return err
	}

	caKey, caCert, err := kubemaster.CreatePKIAssets(i.cfg)
	if err != nil {
		return err
	}

	kubeconfigs, err := kubemaster.CreateCertsAndConfigForClients(i.cfg.API, []string{"kubelet", "admin"}, caKey, caCert)
	if err != nil {
		return err
	}

	// kubeadm is responsible for writing the following kubeconfig file, which
	// kubelet should be waiting for. Help user avoid foot-shooting by refusing to
	// write a file that has already been written (the kubelet will be up and
	// running in that case - they'd need to stop the kubelet, remove the file, and
	// start it again in that case).
	// TODO(phase1+) this is no longer the right place to guard agains foo-shooting,
	// we need to decide how to handle existing files (it may be handy to support
	// importing existing files, may be we could even make our command idempotant,
	// or at least allow for external PKI and stuff)
	for name, kubeconfig := range kubeconfigs {
		if err := kubeadmutil.WriteKubeconfigIfNotExists(name, kubeconfig); err != nil {
			return err
		}
	}

	client, err := kubemaster.CreateClientAndWaitForAPI(kubeconfigs["admin"])
	if err != nil {
		return err
	}

	schedulePodsOnMaster := false
	if err := kubemaster.UpdateMasterRoleLabelsAndTaints(client, schedulePodsOnMaster); err != nil {
		return err
	}

	if err := kubemaster.CreateDiscoveryDeploymentAndSecret(i.cfg, client, caCert); err != nil {
		return err
	}

	if err := kubemaster.CreateEssentialAddons(i.cfg, client); err != nil {
		return err
	}

	// TODO(phase1+) we could probably use templates for this logic, and reference struct fields directly etc
	joinArgs := []string{fmt.Sprintf("--token=%s", i.cfg.Secrets.GivenToken)}
	if i.cfg.API.BindPort != kubeadmapi.DefaultAPIBindPort {
		joinArgs = append(joinArgs, fmt.Sprintf("--api-port=%d", i.cfg.API.BindPort))
	}
	if i.cfg.Discovery.BindPort != kubeadmapi.DefaultDiscoveryBindPort {
		joinArgs = append(joinArgs, fmt.Sprintf("--discovery-port=%d", i.cfg.Discovery.BindPort))
	}
	joinArgs = append(joinArgs, i.cfg.API.AdvertiseAddresses[0])
	fmt.Fprintf(out, initDoneMsgf, strings.Join(joinArgs, " "))

	return nil
}