Refactoring improtant parts and start on docs

2016-09-07 17:37:02 +01:00 · 2016-09-07 17:37:02 +01:00 · b9fd31ff7e
parent 26c4f593aa
commit b9fd31ff7e
19 changed files with 529 additions and 282 deletions
--- a/cmd/kubeadm/app/kubeadm.go
+++ b/cmd/kubeadm/app/kubeadm.go
@ -46,7 +46,6 @@ func getEnvParams() map[string]string {
 		"discovery_image":    "dgoodwin/kubediscovery:latest", // TODO(phase1): fmt.Sprintf("gcr.io/google_containers/kube-discovery-%s:%s", runtime.GOARCH, "1.0"),
 		"etcd_image":         "",
 		"component_loglevel": "--v=4",
-		"dns_domain":         "cluster.local",
 	}

 	for k := range envParams {
--- a/pkg/kubeadm/README.md
+++ b/pkg/kubeadm/README.md
@ -0,0 +1,76 @@
+# Kubernetes Cluster Boostrap Made Easy
+
+## Usage
+
+### `kubeadm init`
+
+It's usually enough to run `kubeadm init`, but in some case you might like to override the
+default behaviour.
+
+- `--token=<str>`
+
+By default, a token is generated, but if you are to automate cluster deployment, you want to
+set the token ahead of time. Read the docs for more information on the token format.
+
+- `--api-advertise-addr=<ip>` (multiple values allowed)
+- `--api-external-dns-name=<domain>` (multiple values allowed)
+
+By default, `kubeadm` will auto detect IP address and use that to generate API server certificates.
+If you would like to access the API via any external IPs and/or DNS, which it might not be able
+to detect, you can use `--api-advertise-addr` and `--api-external-dns-name` to add multiple
+different IP addresses and DNS names.
+
+- `--service-cidr=<cidr>` (default: "100.64/12")
+- `--service-dns-domain=<domain>` (default: "cluster.local")
+
+- `--use-hyperkube=<bool>` (default: "false")
+
+***TODO(phase1+)***
+
+- `--api-bind-addr=<ip>`
+- `--api-bind-port=<port>`
+
+***TODO(phase2)***
+
+- `--api-bind-loopback-unsecure=<bool>`
+
+***TODO(pahse2)***
+
+- `--prefer-private-network=<bool>`
+- `--prefer-public-network=<bool>`
+
+### `kubeadm join`
+
+# User Experience Considerations
+
+> ***TODO*** _Move this into the design document
+
+a) `kube-apiserver` will listen on `0.0.0.0:443` and `127.0.0.1:8080`, which is not configurable right now and make things a bit easier for the MVP
+b) there is `kube-discovery`, which will listen on `0.0.0.0:9898`
+
+
+from the point of view of `kubeadm init`, we need to have
+a) a primary IP address as will be seen by the nodes and needs to go into the cert and `kube-discovery` configuration secret
+b) some other names and addresses API server may be known by (e.g. external DNS and/or LB and/or NAT)
+
+from that perspective we don’t can assume default ports for now, but for all the address we really only care about two ports (i.e.  443 and 9898)
+
+we should make ports configurable and expose some way of making API server bind to a specific address/interface
+
+but I think for the MVP we need solve the issue with hardcode IPs and DNS names in the certs
+
+so it sounds rather simple enough to introduce  `--api-advertise-addr=<ip>` and `--api-external-dns-name=<domain>`, and allowing multiple of those sounds also simple enough
+
+from the `kubeadm join` perspective, it cares about the two ports we mentioned, and we can make those configurable too
+
+but for now it’s easier to pass just the IP address
+
+plust it’s also require, so passing it without a named flag sounds convenient, and it’s something users are familiar with
+
+that’s what Consul does, what what Weave does, and now Docker SwarmKit does the same thing also (edited)
+
+flags will differ, as there are some Kubernetes-specifics aspects to what join does, but basic join semantics will remain _familiar_
+
+if we do marry `kube-discovery` with the API, we might do `kubeadm join host:port`, as we’d end-up with a single port to care about
+
+but we haven’t yet
--- a/pkg/kubeadm/api/types.go
+++ b/pkg/kubeadm/api/types.go
@ -20,29 +20,76 @@ import (
 	"net"
 )

-type BootstrapParams struct {
-	// TODO this is mostly out of date and bloated now, let's revisit this soon
-	Discovery *OutOfBandDiscovery
-	EnvParams map[string]string
+type KubeadmConfig struct {
+	InitFlags
+	JoinFlags
+	ManualFlags
+	Secrets struct {
+		GivenToken  string // dot-separated `<TokenID>.<Token>` set by the user
+		TokenID     string // optional on master side, will be generated if not specified
+		Token       []byte // optional on master side, will be generated if not specified
+		BearerToken string // set based on Token
+	}
+	EnvParams map[string]string // TODO(phase2) this is likely to be come componentconfig
 }

-type OutOfBandDiscovery struct {
-	// 'join-node' side
+// TODO(phase2) should we add validatin funcs on these structs?
+
+type InitFlags struct {
+	API struct {
+		AdvertiseAddrs  []net.IP
+		ExternalDNSName []string
+	}
+	Services struct {
+		CIDR      net.IPNet
+		DNSDomain string
+	}
+	CloudProvider string
+}
+
+const (
+	DefaultServiceDNSDomain   = "cluster.local"
+	DefaultServicesCIDRString = "100.64.0.0/12"
+)
+
+var (
+	DefaultServicesCIDR  *net.IPNet
+	ListOfCloudProviders = []string{
+		"aws",
+		"azure",
+		"cloudstack",
+		"gce",
+		"mesos",
+		"openstack",
+		"ovirt",
+		"rackspace",
+		"vsphere",
+	}
+	SupportedCloudProviders map[string]bool
+)
+
+func init() {
+	_, DefaultServicesCIDR, _ = net.ParseCIDR(DefaultServicesCIDRString)
+	SupportedCloudProviders = make(map[string]bool, len(ListOfCloudProviders))
+	for _, v := range ListOfCloudProviders {
+		SupportedCloudProviders[v] = true
+	}
+}
+
+type JoinFlags struct {
+	MasterAddrs []net.IP
+}
+
+// TODO(phase1?) we haven't decided whether manual sub commands should get merged into  main commands...
+type ManualFlags struct {
 	ApiServerURLs string // comma separated
 	CaCertFile    string
-	GivenToken    string // dot-separated `<TokenID>.<Token>` set by the user
-	TokenID       string // optional on master side, will be generated if not specified
-	Token         []byte // optional on master side, will be generated if not specified
 	BearerToken   string // set based on Token
-	// 'init-master' side
-	ApiServerDNSName string // optional, used in master bootstrap
-	ListenIP         net.IP // optional IP for master to listen on, rather than autodetect
-	UseHyperkubeImage bool
+	ListenIP      net.IP // optional IP for master to listen on, rather than autodetect
 }

 type ClusterInfo struct {
-	// TODO Kind, apiVersion
-	// TODO clusterId, fetchedTime, expiredTime
+	// TODO(pahse1?) this may become simply `api.Config`
 	CertificateAuthorities []string `json:"certificateAuthorities"`
 	Endpoints              []string `json:"endpoints"`
 }
--- a/pkg/kubeadm/cmd/cmd.go
+++ b/pkg/kubeadm/cmd/cmd.go
@ -73,25 +73,25 @@ func NewKubeadmCommand(f *cmdutil.Factory, in io.Reader, out, err io.Writer, env
 	// TODO(phase2) detect interactive vs non-interactive use and adjust output accordingly
 	// i.e. make it automation friendly
 	//
-	// TODO(phase2) create an bastraction that defines files and the content that needs to
+	// TODO(phase2) create an abstraction that defines files and the content that needs to
 	// be written to disc and write it all in one go at the end as we have a lot of
 	// crapy little files written from different parts of this code; this could also
 	// be useful for testing

-	bootstrapParams := &kubeadmapi.BootstrapParams{
-		Discovery: &kubeadmapi.OutOfBandDiscovery{
-		// TODO(phase1) this type no longer makes sense here
-		},
-		EnvParams: envParams,
-	}
+	s := new(kubeadmapi.KubeadmConfig)
+	s.EnvParams = envParams
+
+	//s.InitFlags, s.JoinFlags = new(kubeadmapi.InitFlags), new(kubeadmapi.JoinFlags)
+
+	//s.ManualFlags = new(kubeadmapi.ManualFlags)

 	cmds.ResetFlags()
 	cmds.SetGlobalNormalizationFunc(flag.WarnWordSepNormalizeFunc)

-	cmds.AddCommand(NewCmdInit(out, bootstrapParams))
-	cmds.AddCommand(NewCmdJoin(out, bootstrapParams))
-	cmds.AddCommand(NewCmdUser(out, bootstrapParams))
-	cmds.AddCommand(NewCmdManual(out, bootstrapParams))
+	cmds.AddCommand(NewCmdInit(out, s))
+	cmds.AddCommand(NewCmdJoin(out, s))
+	cmds.AddCommand(NewCmdUser(out, s))
+	cmds.AddCommand(NewCmdManual(out, s))

 	return cmds
 }
--- a/pkg/kubeadm/cmd/init.go
+++ b/pkg/kubeadm/cmd/init.go
@ -19,6 +19,7 @@ package cmd
 import (
 	"fmt"
 	"io"
+	"net"

 	"github.com/renstrom/dedent"
 	"github.com/spf13/cobra"
@ -40,52 +41,91 @@ var (
 		`)
 )

-func NewCmdInit(out io.Writer, params *kubeadmapi.BootstrapParams) *cobra.Command {
+func NewCmdInit(out io.Writer, s *kubeadmapi.KubeadmConfig) *cobra.Command {
+	advertiseAddrs := &[]string{}
 	cmd := &cobra.Command{
 		Use:   "init",
 		Short: "Run this on the first server you deploy onto.",
 		Run: func(cmd *cobra.Command, args []string) {
-			err := RunInit(out, cmd, args, params)
-			cmdutil.CheckErr(err)
+			err := RunInit(out, cmd, args, s, advertiseAddrs)
+			cmdutil.CheckErr(err) // TODO(phase1+) append alpha warning with bugs URL etc
 		},
 	}

-	cmd.PersistentFlags().IPVar(&params.Discovery.ListenIP, "listen-ip", nil,
-		`(optional) IP address to listen on, in case autodetection fails.`)
-	cmd.PersistentFlags().StringVar(&params.Discovery.GivenToken, "token", "",
-		`(optional) Shared secret used to secure bootstrap. Will be generated and displayed if not provided.`)
-	cmd.PersistentFlags().BoolVar(&params.Discovery.UseHyperkubeImage, "use-hyperkube", false,
-		`(optional) Use the hyperkube image for running the apiserver, controller-manager, scheduler and proxy.`)
+	cmd.PersistentFlags().StringVar(
+		&s.Secrets.GivenToken, "token", "",
+		`(optional) Shared secret used to secure bootstrap. Will be generated and displayed if not provided.`,
+	)
+	cmd.PersistentFlags().StringSliceVar(
+		advertiseAddrs, "api-advertise-addr", []string{},
+		`(optional) IP address to advertise, in case autodetection fails.`,
+	)
+	cmd.PersistentFlags().StringSliceVar(
+		&s.InitFlags.API.ExternalDNSName, "api-external-dns-name", []string{},
+		`(optional) DNS name to advertise, in case you have configured one yourself.`,
+	)
+
+	cmd.PersistentFlags().IPNetVar(
+		&s.InitFlags.Services.CIDR, "service-cidr", *kubeadmapi.DefaultServicesCIDR,
+		`(optional) use alterantive range of IP address for service VIPs, e.g. "10.16.0.0/12"`,
+	)
+	cmd.PersistentFlags().StringVar(
+		&s.InitFlags.Services.DNSDomain, "service-dns-domain", kubeadmapi.DefaultServiceDNSDomain,
+		`(optional) use alterantive domain name for services, e.g. "myorg.internal"`,
+	)
+	cmd.PersistentFlags().StringVar(
+		&s.InitFlags.CloudProvider, "cloud-provider", "",
+		`(optional) enable cloud proiver features (external load-balancers, storage, etc)`,
+	)

 	return cmd
 }

-func RunInit(out io.Writer, cmd *cobra.Command, args []string, params *kubeadmapi.BootstrapParams) error {
-
+func RunInit(out io.Writer, cmd *cobra.Command, args []string, s *kubeadmapi.KubeadmConfig, advertiseAddrs *[]string) error {
 	// Auto-detect the IP
-	if params.Discovery.ListenIP == nil {
+	if len(*advertiseAddrs) == 0 {
+		// TODO(phase1+) perhaps we could actually grab eth0 and eth1
 		ip, err := netutil.ChooseHostInterface()
 		if err != nil {
 			return err
 		}
-		params.Discovery.ListenIP = ip
+		s.InitFlags.API.AdvertiseAddrs = []net.IP{ip}
+	} else {
+		for _, i := range *advertiseAddrs {
+			addr := net.ParseIP(i)
+			if addr == nil {
+				return fmt.Errorf("<cmd/init> failed to parse flag (%q) as an IP address", "--api-advertise-addr="+i)
+			}
+			s.InitFlags.API.AdvertiseAddrs = append(s.InitFlags.API.AdvertiseAddrs, addr)
+		}
 	}
-	if err := kubemaster.CreateTokenAuthFile(params); err != nil {
+
+	if s.InitFlags.CloudProvider != "" {
+		// TODO(phase2) we should be able to auto-detect it and check whether things like IAM roles are correct
+		if _, ok := kubeadmapi.SupportedCloudProviders[s.InitFlags.CloudProvider]; !ok {
+			return fmt.Errorf("<cmd/init> cloud provider %q is not supported, you can use any of %v, or leave it unset", s.InitFlags.CloudProvider, kubeadmapi.ListOfCloudProviders)
+		}
+	}
+
+	if err := kubemaster.CreateTokenAuthFile(s); err != nil {
 		return err
 	}
-	if err := kubemaster.WriteStaticPodManifests(params); err != nil {
+
+	if err := kubemaster.WriteStaticPodManifests(s); err != nil {
 		return err
 	}
-	caKey, caCert, err := kubemaster.CreatePKIAssets(params)
+
+	caKey, caCert, err := kubemaster.CreatePKIAssets(s)
 	if err != nil {
 		return err
 	}
-	kubeconfigs, err := kubemaster.CreateCertsAndConfigForClients(params, []string{"kubelet", "admin"}, caKey, caCert)
+
+	kubeconfigs, err := kubemaster.CreateCertsAndConfigForClients(s, []string{"kubelet", "admin"}, caKey, caCert)
 	if err != nil {
 		return err
 	}
 	for name, kubeconfig := range kubeconfigs {
-		if err := kubeadmutil.WriteKubeconfigIfNotExists(params, name, kubeconfig); err != nil {
+		if err := kubeadmutil.WriteKubeconfigIfNotExists(s, name, kubeconfig); err != nil {
 			return err
 		}
 	}
@ -99,18 +139,18 @@ func RunInit(out io.Writer, cmd *cobra.Command, args []string, params *kubeadmap
 		return err
 	}

-	if err := kubemaster.CreateDiscoveryDeploymentAndSecret(params, client, caCert); err != nil {
+	if err := kubemaster.CreateDiscoveryDeploymentAndSecret(s, client, caCert); err != nil {
 		return err
 	}

-	if err := kubemaster.CreateEssentialAddons(params, client); err != nil {
+	if err := kubemaster.CreateEssentialAddons(s, client); err != nil {
 		return err
 	}

-	// TODO use templates to reference struct fields directly as order of args is fragile
+	// TODO(phase1+) use templates to reference struct fields directly as order of args is fragile
 	fmt.Fprintf(out, init_done_msgf,
-		params.Discovery.GivenToken,
-		params.Discovery.ListenIP,
+		s.Secrets.GivenToken,
+		s.InitFlags.API.AdvertiseAddrs[0].String(),
 	)

 	return nil
--- a/pkg/kubeadm/cmd/join.go
+++ b/pkg/kubeadm/cmd/join.go
@ -19,6 +19,7 @@ package cmd
 import (
 	"fmt"
 	"io"
+	"net"

 	"github.com/renstrom/dedent"
 	"github.com/spf13/cobra"
@ -40,44 +41,52 @@ var (
 		`)
 )

-func NewCmdJoin(out io.Writer, params *kubeadmapi.BootstrapParams) *cobra.Command {
+func NewCmdJoin(out io.Writer, s *kubeadmapi.KubeadmConfig) *cobra.Command {
 	cmd := &cobra.Command{
 		Use:   "join",
 		Short: "Run this on other servers to join an existing cluster.",
 		Run: func(cmd *cobra.Command, args []string) {
-			err := RunJoin(out, cmd, args, params)
+			err := RunJoin(out, cmd, args, s)
 			cmdutil.CheckErr(err)
 		},
 	}

 	// TODO this should become `kubeadm join --token=<...> <master-ip-addr>`
-	cmd.PersistentFlags().StringVarP(&params.Discovery.ApiServerURLs, "api-server-urls", "", "",
-		`Comma separated list of API server URLs. Typically this might be just
-		https://<address-of-master>:8080/`)
-	cmd.PersistentFlags().StringVarP(&params.Discovery.GivenToken, "token", "", "",
-		`Shared secret used to secure bootstrap. Must match output of 'init-master'.`)
+	cmd.PersistentFlags().StringVarP(
+		&s.Secrets.GivenToken, "token", "", "",
+		`Shared secret used to secure bootstrap. Must match output of 'init-master'.`,
+	)

 	return cmd
 }

-func RunJoin(out io.Writer, cmd *cobra.Command, args []string, params *kubeadmapi.BootstrapParams) error {
-	ok, err := kubeadmutil.UseGivenTokenIfValid(params)
+func RunJoin(out io.Writer, cmd *cobra.Command, args []string, s *kubeadmapi.KubeadmConfig) error {
+	// TODO this we are missing args from the help text, there should be a way to tell cobra about it
+	if len(args) == 0 {
+		return fmt.Errorf("<cmd/join> must specify master IP address (see --help)")
+	}
+	for _, i := range args {
+		addr := net.ParseIP(i) // TODO(phase1+) should allow resolvable names too
+		if addr == nil {
+			return fmt.Errorf("<cmd/join> failed parse argument (%q) as an IP address", i)
+		}
+		s.JoinFlags.MasterAddrs = append(s.JoinFlags.MasterAddrs, addr)
+	}
+
+	ok, err := kubeadmutil.UseGivenTokenIfValid(s)
 	if !ok {
 		if err != nil {
-			return fmt.Errorf("%s (see --help)\n", err)
+			return fmt.Errorf("<cmd/join> %s (see --help)\n", err)
 		}
 		return fmt.Errorf("Must specify --token (see --help)\n")
 	}
-	if params.Discovery.ApiServerURLs == "" {
-		return fmt.Errorf("Must specify --api-server-urls (see --help)\n")
-	}

-	kubeconfig, err := kubenode.RetrieveTrustedClusterInfo(params)
+	kubeconfig, err := kubenode.RetrieveTrustedClusterInfo(s)
 	if err != nil {
 		return err
 	}

-	err = kubeadmutil.WriteKubeconfigIfNotExists(params, "kubelet", kubeconfig)
+	err = kubeadmutil.WriteKubeconfigIfNotExists(s, "kubelet", kubeconfig)
 	if err != nil {
 		return err
 	}
--- a/pkg/kubeadm/cmd/manual.go
+++ b/pkg/kubeadm/cmd/manual.go
@ -19,6 +19,7 @@ package cmd
 import (
 	"fmt"
 	"io"
+	"net"

 	"github.com/renstrom/dedent"
 	"github.com/spf13/cobra"
@ -58,23 +59,23 @@ var (
 		`)
 )

-// TODO --token here becomes Discovery.BearerToken and not Discovery.GivenToken
+// TODO --token here becomes `s.Secrets.BearerToken` and not `s.Secrets.GivenToken`
 // may be we should make it the same and ask user to pass dot-separated tokens
 // in any of the modes; we could also enable discovery API in the manual mode just
 // as well, there is no reason we shouldn't let user mix and match modes, unless
 // it is too difficult to support

-func NewCmdManual(out io.Writer, params *kubeadmapi.BootstrapParams) *cobra.Command {
+func NewCmdManual(out io.Writer, s *kubeadmapi.KubeadmConfig) *cobra.Command {
 	cmd := &cobra.Command{
 		Use:   "manual",
 		Short: "Advanced, less-automated functionality, for power users.",
 		// TODO put example usage in the Long description here
 	}
-	cmd.AddCommand(NewCmdManualBootstrap(out, params))
+	cmd.AddCommand(NewCmdManualBootstrap(out, s))
 	return cmd
 }

-func NewCmdManualBootstrap(out io.Writer, params *kubeadmapi.BootstrapParams) *cobra.Command {
+func NewCmdManualBootstrap(out io.Writer, s *kubeadmapi.KubeadmConfig) *cobra.Command {
 	cmd := &cobra.Command{
 		Use:   "bootstrap",
 		Short: "Manually bootstrap a cluster 'out-of-band'",
@ -85,13 +86,14 @@ func NewCmdManualBootstrap(out io.Writer, params *kubeadmapi.BootstrapParams) *c
 		Run: func(cmd *cobra.Command, args []string) {
 		},
 	}
-	cmd.AddCommand(NewCmdManualBootstrapInitMaster(out, params))
-	cmd.AddCommand(NewCmdManualBootstrapJoinNode(out, params))
+	cmd.AddCommand(NewCmdManualBootstrapInitMaster(out, s))
+	cmd.AddCommand(NewCmdManualBootstrapJoinNode(out, s))

 	return cmd
 }

-func NewCmdManualBootstrapInitMaster(out io.Writer, params *kubeadmapi.BootstrapParams) *cobra.Command {
+func NewCmdManualBootstrapInitMaster(out io.Writer, s *kubeadmapi.KubeadmConfig) *cobra.Command {
+	advertiseAddrs := &[]string{}
 	cmd := &cobra.Command{
 		Use:   "init-master",
 		Short: "Manually bootstrap a master 'out-of-band'",
@ -101,101 +103,140 @@ func NewCmdManualBootstrapInitMaster(out io.Writer, params *kubeadmapi.Bootstrap
 			components.
 		`),
 		Run: func(cmd *cobra.Command, args []string) {
-			err := RunManualBootstrapInitMaster(out, cmd, args, params)
+			err := RunManualBootstrapInitMaster(out, cmd, args, s, advertiseAddrs)
 			cmdutil.CheckErr(err)
 		},
 	}

-	params.Discovery.ApiServerURLs = "http://127.0.0.1:8080/" // On the master, assume you can talk to the API server
-	cmd.PersistentFlags().StringVar(&params.Discovery.ApiServerDNSName, "api-dns-name", "",
-		`(optional) DNS name for the API server, will be encoded into
-		subjectAltName in the resulting (generated) TLS certificates`)
-	cmd.PersistentFlags().IPVar(&params.Discovery.ListenIP, "listen-ip", nil,
-		`(optional) IP address to listen on, in case autodetection fails.`)
-	cmd.PersistentFlags().StringVar(&params.Discovery.BearerToken, "token", "",
-		`(optional) Shared secret used to secure bootstrap. Will be generated and displayed if not provided.`)
+	cmd.PersistentFlags().StringVar(
+		&s.Secrets.BearerToken, "token", "",
+		`(optional) Shared secret used to secure bootstrap. Will be generated and displayed if not provided.`,
+	)
+	cmd.PersistentFlags().StringSliceVar(
+		advertiseAddrs, "api-advertise-addr", nil,
+		`(optional) IP address to advertise, in case autodetection fails.`,
+	)
+	cmd.PersistentFlags().StringSliceVar(
+		&s.InitFlags.API.ExternalDNSName, "api-external-dns-name", []string{},
+		`(optional) DNS name to advertise, in case you have configured one yourself.`,
+	)
+	_, defaultServicesCIDR, _ := net.ParseCIDR("100.64.0.0/12")
+	cmd.PersistentFlags().IPNetVar(
+		&s.InitFlags.Services.CIDR, "service-cidr", *defaultServicesCIDR,
+		`(optional) use alterantive range of IP address for service VIPs, e.g. "10.16.0.0/12"`,
+	)
+	cmd.PersistentFlags().StringVar(
+		&s.InitFlags.Services.DNSDomain, "service-dns-domain", "cluster.local",
+		`(optional) use alterantive domain name for services, e.g. "myorg.internal"`,
+	)

 	return cmd
 }

-func RunManualBootstrapInitMaster(out io.Writer, cmd *cobra.Command, args []string, params *kubeadmapi.BootstrapParams) error {
+func RunManualBootstrapInitMaster(out io.Writer, cmd *cobra.Command, args []string, s *kubeadmapi.KubeadmConfig, advertiseAddrs *[]string) error {
 	// Auto-detect the IP
-	if params.Discovery.ListenIP == nil {
+	if len(*advertiseAddrs) == 0 {
+		// TODO(phase1+) perhaps we could actually grab eth0 and eth1
 		ip, err := netutil.ChooseHostInterface()
 		if err != nil {
 			return err
 		}
-		params.Discovery.ListenIP = ip
+		s.InitFlags.API.AdvertiseAddrs = []net.IP{ip}
+	} else {
+		for _, i := range *advertiseAddrs {
+			addr := net.ParseIP(i)
+			if addr == nil {
+				return fmt.Errorf("<cmd/init> failed to parse flag (%q) as an IP address", "--api-advertise-addr="+i)
+			}
+			s.InitFlags.API.AdvertiseAddrs = append(s.InitFlags.API.AdvertiseAddrs, addr)
+		}
 	}

-	if err := kubemaster.CreateTokenAuthFile(params); err != nil {
+	if err := kubemaster.CreateTokenAuthFile(s); err != nil {
 		return err
 	}
-	if err := kubemaster.WriteStaticPodManifests(params); err != nil {
+	if err := kubemaster.WriteStaticPodManifests(s); err != nil {
 		return err
 	}
-	caKey, caCert, err := kubemaster.CreatePKIAssets(params)
+	caKey, caCert, err := kubemaster.CreatePKIAssets(s)
 	if err != nil {
 		return err
 	}
-	kubeconfigs, err := kubemaster.CreateCertsAndConfigForClients(params, []string{"kubelet", "admin"}, caKey, caCert)
+	kubeconfigs, err := kubemaster.CreateCertsAndConfigForClients(s, []string{"kubelet", "admin"}, caKey, caCert)
 	if err != nil {
 		return err
 	}
 	for name, kubeconfig := range kubeconfigs {
-		if err := kubeadmutil.WriteKubeconfigIfNotExists(params, name, kubeconfig); err != nil {
+		if err := kubeadmutil.WriteKubeconfigIfNotExists(s, name, kubeconfig); err != nil {
 			return err
 		}
 	}

+	// TODO we have most of cmd/init functionality here, except for `CreateDiscoveryDeploymentAndSecret()`
+	// it may be a good idea to just merge the two commands into one, and it's something we have started talking
+	// about, the only question is where disco service should be an opt-out...
+
+	client, err := kubemaster.CreateClientAndWaitForAPI(kubeconfigs["admin"])
+	if err != nil {
+		return err
+	}
+
+	if err := kubemaster.UpdateMasterRoleLabelsAndTaints(client); err != nil {
+		return err
+	}
+
+	if err := kubemaster.CreateEssentialAddons(s, client); err != nil {
+		return err
+	}
+
 	// TODO use templates to reference struct fields directly as order of args is fragile
 	fmt.Fprintf(out, manual_init_done_msgf,
-		params.Discovery.BearerToken,
-		params.Discovery.ListenIP,
+		s.Secrets.BearerToken,
+		s.InitFlags.API.AdvertiseAddrs[0].String(),
 	)
 	return nil
 }

-func NewCmdManualBootstrapJoinNode(out io.Writer, params *kubeadmapi.BootstrapParams) *cobra.Command {
+func NewCmdManualBootstrapJoinNode(out io.Writer, s *kubeadmapi.KubeadmConfig) *cobra.Command {
 	cmd := &cobra.Command{
 		Use:   "join-node",
 		Short: "Manually bootstrap a node 'out-of-band', joining it into a cluster with extant control plane",

 		Run: func(cmd *cobra.Command, args []string) {
-			err := RunManualBootstrapJoinNode(out, cmd, args, params)
+			err := RunManualBootstrapJoinNode(out, cmd, args, s)
 			cmdutil.CheckErr(err)
 		},
 	}
-	cmd.PersistentFlags().StringVarP(&params.Discovery.CaCertFile, "ca-cert-file", "", "",
+	cmd.PersistentFlags().StringVarP(&s.ManualFlags.CaCertFile, "ca-cert-file", "", "",
 		`Path to a CA cert file in PEM format. The same CA cert must be distributed to
 		all servers.`)
-	cmd.PersistentFlags().StringVarP(&params.Discovery.ApiServerURLs, "api-server-urls", "", "",
+	cmd.PersistentFlags().StringVarP(&s.ManualFlags.ApiServerURLs, "api-server-urls", "", "",
 		`Comma separated list of API server URLs. Typically this might be just
 		https://<address-of-master>:8080/`)
-	cmd.PersistentFlags().StringVarP(&params.Discovery.BearerToken, "token", "", "",
+	cmd.PersistentFlags().StringVarP(&s.ManualFlags.BearerToken, "token", "", "",
 		`Shared secret used to secure bootstrap. Must match output of 'init-master'.`)

 	return cmd
 }

-func RunManualBootstrapJoinNode(out io.Writer, cmd *cobra.Command, args []string, params *kubeadmapi.BootstrapParams) error {
-	if params.Discovery.CaCertFile == "" {
+func RunManualBootstrapJoinNode(out io.Writer, cmd *cobra.Command, args []string, s *kubeadmapi.KubeadmConfig) error {
+	if s.ManualFlags.CaCertFile == "" {
 		fmt.Fprintf(out, "Must specify --ca-cert-file (see --help)\n")
 		return nil
 	}

-	if params.Discovery.ApiServerURLs == "" {
+	if s.ManualFlags.ApiServerURLs == "" {
 		fmt.Fprintf(out, "Must specify --api-server-urls (see --help)\n")
 		return nil
 	}

-	kubeconfig, err := kubenode.PerformTLSBootstrapFromParams(params)
+	kubeconfig, err := kubenode.PerformTLSBootstrapFromConfig(s)
 	if err != nil {
 		fmt.Fprintf(out, "Failed to perform TLS bootstrap: %s\n", err)
 		return err
 	}

-	err = kubeadmutil.WriteKubeconfigIfNotExists(params, "kubelet", kubeconfig)
+	err = kubeadmutil.WriteKubeconfigIfNotExists(s, "kubelet", kubeconfig)
 	if err != nil {
 		fmt.Fprintf(out, "Unable to write config for node:\n%s\n", err)
 		return err
--- a/pkg/kubeadm/cmd/user.go
+++ b/pkg/kubeadm/cmd/user.go
@ -23,7 +23,7 @@ import (
 	kubeadmapi "k8s.io/kubernetes/pkg/kubeadm/api"
 )

-func NewCmdUser(out io.Writer, params *kubeadmapi.BootstrapParams) *cobra.Command {
+func NewCmdUser(out io.Writer, s *kubeadmapi.KubeadmConfig) *cobra.Command {
 	cmd := &cobra.Command{
 		Use:   "user",
 		Short: "Get initial admin credentials for a cluster.", // using TLS bootstrap
--- a/pkg/kubeadm/images/images.go
+++ b/pkg/kubeadm/images/images.go
@ -24,53 +24,42 @@ import (
 const (
 	KubeEtcdImage = "etcd"

-	KubeApiServerImage = "apiserver"
+	KubeApiServerImage         = "apiserver"
 	KubeControllerManagerImage = "controller-manager"
-	KubeSchedulerImage = "scheduler"
-	KubeProxyImage = "proxy"
+	KubeSchedulerImage         = "scheduler"
+	KubeProxyImage             = "proxy"

-	KubeDnsImage = "kube-dns"
-	KubeDnsmasqImage = "dnsmasq"
+	KubeDnsImage         = "kube-dns"
+	KubeDnsmasqImage     = "dnsmasq"
 	KubeExechealthzImage = "exechealthz"

-
-	gcrPrefix = "gcr.io/google_containers"
+	gcrPrefix   = "gcr.io/google_containers"
 	etcdVersion = "2.2.5"
 	kubeVersion = "v1.4.0-alpha.3"

-	kubeDnsVersion = "1.7"
-	dnsmasqVersion = "1.3"
+	kubeDnsVersion     = "1.7"
+	dnsmasqVersion     = "1.3"
 	exechealthzVersion = "1.1"
 )

-func GetCoreImage(image string, overrideImage string, useHyperkube bool) string {
+func GetCoreImage(image string, overrideImage string) string {
 	if overrideImage != "" {
 		return overrideImage
 	}

-	if useHyperkube {
-		return map[string]string{
-			KubeEtcdImage: fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "etcd", runtime.GOARCH, etcdVersion),
-			KubeApiServerImage: fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "hyperkube", runtime.GOARCH, kubeVersion),
-			KubeControllerManagerImage: fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "hyperkube", runtime.GOARCH, kubeVersion),
-			KubeSchedulerImage: fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "hyperkube", runtime.GOARCH, kubeVersion),
-			KubeProxyImage: fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "hyperkube", runtime.GOARCH, kubeVersion),
-		}[image]
-	}
-
 	return map[string]string{
-		KubeEtcdImage: fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "etcd", runtime.GOARCH, etcdVersion),
-		KubeApiServerImage: fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "kube-apiserver", runtime.GOARCH, kubeVersion),
+		KubeEtcdImage:              fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "etcd", runtime.GOARCH, etcdVersion),
+		KubeApiServerImage:         fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "kube-apiserver", runtime.GOARCH, kubeVersion),
 		KubeControllerManagerImage: fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "kube-controller-manager", runtime.GOARCH, kubeVersion),
-		KubeSchedulerImage: fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "kube-scheduler", runtime.GOARCH, kubeVersion),
-		KubeProxyImage: fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "kube-proxy", runtime.GOARCH, kubeVersion),
+		KubeSchedulerImage:         fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "kube-scheduler", runtime.GOARCH, kubeVersion),
+		KubeProxyImage:             fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "kube-proxy", runtime.GOARCH, kubeVersion),
 	}[image]
 }

 func GetAddonImage(image string) string {
 	return map[string]string{
-		KubeDnsImage: fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "kube-dns", runtime.GOARCH, kubeDnsVersion),
-		KubeDnsmasqImage: fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "kube-dnsmasq", runtime.GOARCH, dnsmasqVersion),
+		KubeDnsImage:         fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "kubedns", runtime.GOARCH, kubeDnsVersion),
+		KubeDnsmasqImage:     fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "kube-dnsmasq", runtime.GOARCH, dnsmasqVersion),
 		KubeExechealthzImage: fmt.Sprintf("%s/%s-%s:%s", gcrPrefix, "exechealthz", runtime.GOARCH, exechealthzVersion),
 	}[image]
 }
--- a/pkg/kubeadm/master/addons.go
+++ b/pkg/kubeadm/master/addons.go
@ -25,20 +25,18 @@ import (
 	clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
 	kubeadmapi "k8s.io/kubernetes/pkg/kubeadm/api"
 	"k8s.io/kubernetes/pkg/kubeadm/images"
+	ipallocator "k8s.io/kubernetes/pkg/registry/service/ipallocator"
 	"k8s.io/kubernetes/pkg/util/intstr"
 )

-func createKubeProxyPodSpec(params *kubeadmapi.BootstrapParams) api.PodSpec {
+func createKubeProxyPodSpec(s *kubeadmapi.KubeadmConfig) api.PodSpec {
 	privilegedTrue := true
 	return api.PodSpec{
 		SecurityContext: &api.PodSecurityContext{HostNetwork: true},
 		Containers: []api.Container{{
-			Name:  "kube-proxy",
-			Image: images.GetCoreImage(images.KubeProxyImage, params.EnvParams["hyperkube_image"], params.Discovery.UseHyperkubeImage),
-			Command: append(getImageEntrypoint("proxy", params.Discovery.UseHyperkubeImage), []string{
-				"--kubeconfig=/run/kubeconfig",
-				params.EnvParams["component_loglevel"],
-			}...),
+			Name:            kubeProxy,
+			Image:           images.GetCoreImage(images.KubeProxyImage, s.EnvParams["hyperkube_image"]),
+			Command:         append(getComponentCommand("proxy", s), "--kubeconfig=/run/kubeconfig"),
 			SecurityContext: &api.SecurityContext{Privileged: &privilegedTrue},
 			VolumeMounts: []api.VolumeMount{
 				{
@ -67,7 +65,7 @@ func createKubeProxyPodSpec(params *kubeadmapi.BootstrapParams) api.PodSpec {
 			{
 				Name: "kubeconfig",
 				VolumeSource: api.VolumeSource{
-					HostPath: &api.HostPathVolumeSource{Path: path.Join(params.EnvParams["prefix"], "kubelet.conf")},
+					HostPath: &api.HostPathVolumeSource{Path: path.Join(s.EnvParams["prefix"], "kubelet.conf")},
 				},
 			},
 			{
@ -80,8 +78,7 @@ func createKubeProxyPodSpec(params *kubeadmapi.BootstrapParams) api.PodSpec {
 	}
 }

-// TODO(phase1): Create the DNS service as well
-func createKubeDNSPodSpec(params *kubeadmapi.BootstrapParams) api.PodSpec {
+func createKubeDNSPodSpec(s *kubeadmapi.KubeadmConfig) api.PodSpec {

 	dnsPodResources := api.ResourceList{
 		api.ResourceName(api.ResourceCPU):    resource.MustParse("100m"),
@ -93,6 +90,16 @@ func createKubeDNSPodSpec(params *kubeadmapi.BootstrapParams) api.PodSpec {
 		api.ResourceName(api.ResourceMemory): resource.MustParse("50Mi"),
 	}

+	kubeDNSPort := int32(10053)
+	dnsmasqPort := int32(53)
+
+	nslookup := fmt.Sprintf("nslookup kubernetes.default.svc.%s 127.0.0.1", s.InitFlags.Services.DNSDomain)
+
+	nslookup = fmt.Sprintf("-cmd=%s:%d >/dev/null && %s:%d >/dev/null",
+		nslookup, dnsmasqPort,
+		nslookup, kubeDNSPort,
+	)
+
 	return api.PodSpec{
 		Containers: []api.Container{
 			// DNS server
@ -104,8 +111,8 @@ func createKubeDNSPodSpec(params *kubeadmapi.BootstrapParams) api.PodSpec {
 					Requests: dnsPodResources,
 				},
 				Args: []string{
-					"--domain=" + params.EnvParams["dns_domain"],
-					"--dns-port=10053",
+					fmt.Sprintf("--domain=%s", s.InitFlags.Services.DNSDomain),
+					fmt.Sprintf("--dns-port=%d", kubeDNSPort),
 					// TODO __PILLAR__FEDERATIONS__DOMAIN__MAP__
 				},
 				LivenessProbe: &api.Probe{
@ -136,12 +143,12 @@ func createKubeDNSPodSpec(params *kubeadmapi.BootstrapParams) api.PodSpec {
 				},
 				Ports: []api.ContainerPort{
 					{
-						ContainerPort: 10053,
+						ContainerPort: kubeDNSPort,
 						Name:          "dns-local",
 						Protocol:      api.ProtocolUDP,
 					},
 					{
-						ContainerPort: 10053,
+						ContainerPort: kubeDNSPort,
 						Name:          "dns-tcp-local",
 						Protocol:      api.ProtocolTCP,
 					},
@ -158,16 +165,16 @@ func createKubeDNSPodSpec(params *kubeadmapi.BootstrapParams) api.PodSpec {
 				Args: []string{
 					"--cache-size=1000",
 					"--no-resolv",
-					"--server=127.0.0.1#10053",
+					fmt.Sprintf("--server=127.0.0.1#%d", kubeDNSPort),
 				},
 				Ports: []api.ContainerPort{
 					{
-						ContainerPort: 53,
+						ContainerPort: dnsmasqPort,
 						Name:          "dns",
 						Protocol:      api.ProtocolUDP,
 					},
 					{
-						ContainerPort: 53,
+						ContainerPort: dnsmasqPort,
 						Name:          "dns-tcp",
 						Protocol:      api.ProtocolTCP,
 					},
@ -182,7 +189,7 @@ func createKubeDNSPodSpec(params *kubeadmapi.BootstrapParams) api.PodSpec {
 					Requests: healthzPodResources,
 				},
 				Args: []string{
-					"-cmd=nslookup kubernetes.default.svc." + params.EnvParams["dns_domain"] + " 127.0.0.1 >/dev/null && nslookup kubernetes.default.svc." + params.EnvParams["dns_domain"] + " 127.0.0.1:10053 >/dev/null",
+					nslookup,
 					"-port=8080",
 					"-quiet",
 				},
@ -196,19 +203,27 @@ func createKubeDNSPodSpec(params *kubeadmapi.BootstrapParams) api.PodSpec {
 	}

 }
-func createKubeDNSServiceSpec(params *kubeadmapi.BootstrapParams) api.ServiceSpec {
-	return api.ServiceSpec{
+
+func createKubeDNSServiceSpec(s *kubeadmapi.KubeadmConfig) (*api.ServiceSpec, error) {
+	ip, err := ipallocator.GetIndexedIP(&s.InitFlags.Services.CIDR, 10)
+	if err != nil {
+		return nil, fmt.Errorf("unable to allocate IP address for kube-dns addon from the given CIDR (%q) [%s]", s.InitFlags.Services.CIDR, err)
+	}
+
+	svc := &api.ServiceSpec{
 		Selector: map[string]string{"name": "kube-dns"},
 		Ports: []api.ServicePort{
 			{Name: "dns", Port: 53, Protocol: api.ProtocolUDP},
 			{Name: "dns-tcp", Port: 53, Protocol: api.ProtocolTCP},
 		},
-		ClusterIP: "100.64.0.2",
+		ClusterIP: ip.String(),
 	}
+
+	return svc, nil
 }

-func CreateEssentialAddons(params *kubeadmapi.BootstrapParams, client *clientset.Clientset) error {
-	kubeProxyDaemonSet := NewDaemonSet("kube-proxy", createKubeProxyPodSpec(params))
+func CreateEssentialAddons(s *kubeadmapi.KubeadmConfig, client *clientset.Clientset) error {
+	kubeProxyDaemonSet := NewDaemonSet(kubeProxy, createKubeProxyPodSpec(s))
 	SetMasterTaintTolerations(&kubeProxyDaemonSet.Spec.Template.ObjectMeta)

 	if _, err := client.Extensions().DaemonSets(api.NamespaceSystem).Create(kubeProxyDaemonSet); err != nil {
@ -217,15 +232,19 @@ func CreateEssentialAddons(params *kubeadmapi.BootstrapParams, client *clientset

 	fmt.Println("<master/addons> created essential addon: kube-proxy")

-	kubeDNSDeployment := NewDeployment("kube-dns", 1, createKubeDNSPodSpec(params))
+	kubeDNSDeployment := NewDeployment("kube-dns", 1, createKubeDNSPodSpec(s))
 	SetMasterTaintTolerations(&kubeDNSDeployment.Spec.Template.ObjectMeta)

 	if _, err := client.Extensions().Deployments(api.NamespaceSystem).Create(kubeDNSDeployment); err != nil {
 		return fmt.Errorf("<master/addons> failed creating essential kube-dns addon [%s]", err)
 	}

-	kubeDNSService := NewService("kube-dns", createKubeDNSServiceSpec(params))
+	kubeDNSServiceSpec, err := createKubeDNSServiceSpec(s)
+	if err != nil {
+		return fmt.Errorf("<master/addons> failed creating essential kube-dns addon - %s", err)
+	}

+	kubeDNSService := NewService("kube-dns", *kubeDNSServiceSpec)
 	if _, err := client.Services(api.NamespaceSystem).Create(kubeDNSService); err != nil {
 		return fmt.Errorf("<master/addons> failed creating essential kube-dns addon [%s]", err)
 	}
--- a/pkg/kubeadm/master/discovery.go
+++ b/pkg/kubeadm/master/discovery.go
@ -39,7 +39,7 @@ const (
 	kubeDiscoverySecretName = "clusterinfo"
 )

-func encodeKubeDiscoverySecretData(params *kubeadmapi.BootstrapParams, caCert *x509.Certificate) map[string][]byte {
+func encodeKubeDiscoverySecretData(s *kubeadmapi.KubeadmConfig, caCert *x509.Certificate) map[string][]byte {
 	// TODO ListenIP is probably not the right now, although it's best we have right now
 	// if user provides a DNS name, or anything else, we should use that, may be it's really
 	// the list of all SANs (minus internal DNS names and service IP)?
@ -50,8 +50,11 @@ func encodeKubeDiscoverySecretData(params *kubeadmapi.BootstrapParams, caCert *x
 		tokenMap     = map[string]string{}
 	)

-	endpointList = append(endpointList, fmt.Sprintf("https://%s:443", params.Discovery.ListenIP))
-	tokenMap[params.Discovery.TokenID] = hex.EncodeToString(params.Discovery.Token)
+	for _, addr := range s.InitFlags.API.AdvertiseAddrs {
+		endpointList = append(endpointList, fmt.Sprintf("https://%s:443", addr.String()))
+	}
+
+	tokenMap[s.Secrets.TokenID] = hex.EncodeToString(s.Secrets.Token)

 	data["endpoint-list.json"], _ = json.Marshal(endpointList)
 	data["token-map.json"], _ = json.Marshal(tokenMap)
@ -60,7 +63,7 @@ func encodeKubeDiscoverySecretData(params *kubeadmapi.BootstrapParams, caCert *x
 	return data
 }

-func newKubeDiscoveryPodSpec(params *kubeadmapi.BootstrapParams) api.PodSpec {
+func newKubeDiscoveryPodSpec(s *kubeadmapi.KubeadmConfig) api.PodSpec {
 	return api.PodSpec{
 		// We have to use host network namespace, as `HostPort`/`HostIP` are Docker's
 		// buisness and CNI support isn't quite there yet (except for kubenet)
@ -69,7 +72,7 @@ func newKubeDiscoveryPodSpec(params *kubeadmapi.BootstrapParams) api.PodSpec {
 		SecurityContext: &api.PodSecurityContext{HostNetwork: true},
 		Containers: []api.Container{{
 			Name:    kubeDiscoverynName,
-			Image:   params.EnvParams["discovery_image"],
+			Image:   s.EnvParams["discovery_image"],
 			Command: []string{"/usr/bin/kube-discovery"},
 			VolumeMounts: []api.VolumeMount{{
 				Name:      kubeDiscoverySecretName,
@ -77,7 +80,8 @@ func newKubeDiscoveryPodSpec(params *kubeadmapi.BootstrapParams) api.PodSpec {
 				ReadOnly:  true,
 			}},
 			Ports: []api.ContainerPort{
-				// TODO when CNI issue (#31307) is resolved, we should add `HostIP: params.Discovery.ListenIP`
+				// TODO when CNI issue (#31307) is resolved, we should consider adding
+				// `HostIP: s.API.AdvertiseAddrs[0]`, if there is only one address`
 				{Name: "http", ContainerPort: 9898, HostPort: 9898},
 			},
 		}},
@ -90,13 +94,13 @@ func newKubeDiscoveryPodSpec(params *kubeadmapi.BootstrapParams) api.PodSpec {
 	}
 }

-func newKubeDiscovery(params *kubeadmapi.BootstrapParams, caCert *x509.Certificate) kubeDiscovery {
+func newKubeDiscovery(s *kubeadmapi.KubeadmConfig, caCert *x509.Certificate) kubeDiscovery {
 	kd := kubeDiscovery{
-		Deployment: NewDeployment(kubeDiscoverynName, 1, newKubeDiscoveryPodSpec(params)),
+		Deployment: NewDeployment(kubeDiscoverynName, 1, newKubeDiscoveryPodSpec(s)),
 		Secret: &api.Secret{
 			ObjectMeta: api.ObjectMeta{Name: kubeDiscoverySecretName},
 			Type:       api.SecretTypeOpaque,
-			Data:       encodeKubeDiscoverySecretData(params, caCert),
+			Data:       encodeKubeDiscoverySecretData(s, caCert),
 		},
 	}

@ -106,8 +110,8 @@ func newKubeDiscovery(params *kubeadmapi.BootstrapParams, caCert *x509.Certifica
 	return kd
 }

-func CreateDiscoveryDeploymentAndSecret(params *kubeadmapi.BootstrapParams, client *clientset.Clientset, caCert *x509.Certificate) error {
-	kd := newKubeDiscovery(params, caCert)
+func CreateDiscoveryDeploymentAndSecret(s *kubeadmapi.KubeadmConfig, client *clientset.Clientset, caCert *x509.Certificate) error {
+	kd := newKubeDiscovery(s, caCert)

 	if _, err := client.Extensions().Deployments(api.NamespaceSystem).Create(kd.Deployment); err != nil {
 		return fmt.Errorf("<master/discovery> failed to create %q deployment [%s]", kubeDiscoverynName, err)
--- a/pkg/kubeadm/master/kubeconfig.go
+++ b/pkg/kubeadm/master/kubeconfig.go
@ -28,11 +28,14 @@ import (
 	certutil "k8s.io/kubernetes/pkg/util/cert"
 )

-func CreateCertsAndConfigForClients(params *kubeadmapi.BootstrapParams, clientNames []string, caKey *rsa.PrivateKey, caCert *x509.Certificate) (map[string]*clientcmdapi.Config, error) {
+func CreateCertsAndConfigForClients(s *kubeadmapi.KubeadmConfig, clientNames []string, caKey *rsa.PrivateKey, caCert *x509.Certificate) (map[string]*clientcmdapi.Config, error) {

 	basicClientConfig := kubeadmutil.CreateBasicClientConfig(
 		"kubernetes",
-		fmt.Sprintf("https://%s:443", params.Discovery.ListenIP),
+		// 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
+		fmt.Sprintf("https://%s:443", s.InitFlags.API.AdvertiseAddrs[0]),
 		certutil.EncodeCertPEM(caCert),
 	)

--- a/pkg/kubeadm/master/manifests.go
+++ b/pkg/kubeadm/master/manifests.go
@ -36,85 +36,65 @@ import (
 // init master` and `kubeadm manual bootstrap master` can get going.

 const (
-	SERVICE_CLUSTER_IP_RANGE = "--service-cluster-ip-range=100.64.0.0/12"
-	CLUSTER_NAME             = "--cluster-name=kubernetes"
-	MASTER                   = "--master=127.0.0.1:8080"
+	DefaultClusterName = "--cluster-name=kubernetes"
+
+	etcd                  = "etcd"
+	apiServer             = "apiserver"
+	controllerManager     = "controller-manager"
+	scheduler             = "scheduler"
+	proxy                 = "proxy"
+	kubeAPIServer         = "kube-apiserver"
+	kubeControllerManager = "kube-controller-manager"
+	kubeScheduler         = "kube-scheduler"
+	kubeProxy             = "kube-proxy"
 )

 // TODO look into what this really means, scheduler prints it for some reason
 //
 //E0817 17:53:22.242658       1 event.go:258] Could not construct reference to: '&api.Endpoints{TypeMeta:unversioned.TypeMeta{Kind:"", APIVersion:""}, ObjectMeta:api.ObjectMeta{Name:"kube-scheduler", GenerateName:"", Namespace:"kube-system", SelfLink:"", UID:"", ResourceVersion:"", Generation:0, CreationTimestamp:unversioned.Time{Time:time.Time{sec:0, nsec:0, loc:(*time.Location)(nil)}}, DeletionTimestamp:(*unversioned.Time)(nil), DeletionGracePeriodSeconds:(*int64)(nil), Labels:map[string]string(nil), Annotations:map[string]string(nil), OwnerReferences:[]api.OwnerReference(nil), Finalizers:[]string(nil)}, Subsets:[]api.EndpointSubset(nil)}' due to: 'selfLink was empty, can't make reference'. Will not report event: 'Normal' '%v became leader' 'moby'

-func WriteStaticPodManifests(params *kubeadmapi.BootstrapParams) error {
+func WriteStaticPodManifests(s *kubeadmapi.KubeadmConfig) error {
 	staticPodSpecs := map[string]api.Pod{
 		// TODO this needs a volume
-		"etcd": componentPod(api.Container{
+		etcd: componentPod(api.Container{
 			Command: []string{
 				"/usr/local/bin/etcd",
 				"--listen-client-urls=http://127.0.0.1:2379",
 				"--advertise-client-urls=http://127.0.0.1:2379",
 				"--data-dir=/var/etcd/data",
 			},
-			Image:         images.GetCoreImage(images.KubeEtcdImage, params.EnvParams["etcd_image"], params.Discovery.UseHyperkubeImage),
+			Image:         images.GetCoreImage(images.KubeEtcdImage, s.EnvParams["etcd_image"]),
 			LivenessProbe: componentProbe(2379, "/health"),
-			Name:          "etcd-server",
+			Name:          etcd,
 			Resources:     componentResources("200m"),
 		}),
 		// TODO bind-mount certs in
-		"kube-apiserver": componentPod(api.Container{
-			Name:  "kube-apiserver",
-			Image: images.GetCoreImage(images.KubeApiServerImage, params.EnvParams["hyperkube_image"], params.Discovery.UseHyperkubeImage),
-			Command: append(getImageEntrypoint("apiserver", params.Discovery.UseHyperkubeImage), []string{
-				"--address=127.0.0.1",
-				"--etcd-servers=http://127.0.0.1:2379",
-				"--admission-control=NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,ResourceQuota",
-				SERVICE_CLUSTER_IP_RANGE,
-				"--service-account-key-file=/etc/kubernetes/pki/apiserver-key.pem",
-				"--client-ca-file=/etc/kubernetes/pki/ca.pem",
-				"--tls-cert-file=/etc/kubernetes/pki/apiserver.pem",
-				"--tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem",
-				"--secure-port=443",
-				"--allow-privileged",
-				params.EnvParams["component_loglevel"],
-				"--token-auth-file=/etc/kubernetes/pki/tokens.csv",
-			}...),
+		kubeAPIServer: componentPod(api.Container{
+			Name:          kubeAPIServer,
+			Image:         images.GetCoreImage(images.KubeApiServerImage, s.EnvParams["hyperkube_image"]),
+			Command:       getComponentCommand(apiServer, s),
 			VolumeMounts:  []api.VolumeMount{pkiVolumeMount()},
 			LivenessProbe: componentProbe(8080, "/healthz"),
 			Resources:     componentResources("250m"),
-		}, pkiVolume(params)),
-		"kube-controller-manager": componentPod(api.Container{
-			Name:  "kube-controller-manager",
-			Image: images.GetCoreImage(images.KubeControllerManagerImage, params.EnvParams["hyperkube_image"], params.Discovery.UseHyperkubeImage),
-			Command: append(getImageEntrypoint("controller-manager", params.Discovery.UseHyperkubeImage), []string{
-				"--leader-elect",
-				MASTER,
-				CLUSTER_NAME,
-				"--root-ca-file=/etc/kubernetes/pki/ca.pem",
-				"--service-account-private-key-file=/etc/kubernetes/pki/apiserver-key.pem",
-				"--cluster-signing-cert-file=/etc/kubernetes/pki/ca.pem",
-				"--cluster-signing-key-file=/etc/kubernetes/pki/ca-key.pem",
-				"--insecure-experimental-approve-all-kubelet-csrs-for-group=system:kubelet-bootstrap",
-				"--cluster-cidr=10.2.0.0/16",
-				params.EnvParams["component_loglevel"],
-			}...),
+		}, pkiVolume(s)),
+		kubeControllerManager: componentPod(api.Container{
+			Name:          kubeControllerManager,
+			Image:         images.GetCoreImage(images.KubeControllerManagerImage, s.EnvParams["hyperkube_image"]),
+			Command:       getComponentCommand(controllerManager, s),
 			VolumeMounts:  []api.VolumeMount{pkiVolumeMount()},
 			LivenessProbe: componentProbe(10252, "/healthz"),
 			Resources:     componentResources("200m"),
-		}, pkiVolume(params)),
-		"kube-scheduler": componentPod(api.Container{
-			Name:  "kube-scheduler",
-			Image: images.GetCoreImage(images.KubeSchedulerImage, params.EnvParams["hyperkube_image"], params.Discovery.UseHyperkubeImage),
-			Command: append(getImageEntrypoint("scheduler", params.Discovery.UseHyperkubeImage), []string{
-				"--leader-elect",
-				MASTER,
-				params.EnvParams["component_loglevel"],
-			}...),
+		}, pkiVolume(s)),
+		kubeScheduler: componentPod(api.Container{
+			Name:          kubeScheduler,
+			Image:         images.GetCoreImage(images.KubeSchedulerImage, s.EnvParams["hyperkube_image"]),
+			Command:       getComponentCommand(scheduler, s),
 			LivenessProbe: componentProbe(10251, "/healthz"),
 			Resources:     componentResources("100m"),
 		}),
 	}

-	manifestsPath := path.Join(params.EnvParams["prefix"], "manifests")
+	manifestsPath := path.Join(s.EnvParams["prefix"], "manifests")
 	if err := os.MkdirAll(manifestsPath, 0700); err != nil {
 		return fmt.Errorf("<master/manifests> failed to create directory %q [%s]", manifestsPath, err)
 	}
@ -131,11 +111,11 @@ func WriteStaticPodManifests(params *kubeadmapi.BootstrapParams) error {
 	return nil
 }

-func pkiVolume(params *kubeadmapi.BootstrapParams) api.Volume {
+func pkiVolume(s *kubeadmapi.KubeadmConfig) api.Volume {
 	return api.Volume{
 		Name: "pki",
 		VolumeSource: api.VolumeSource{
-			HostPath: &api.HostPathVolumeSource{Path: params.EnvParams["host_pki_path"]},
+			HostPath: &api.HostPathVolumeSource{Path: s.EnvParams["host_pki_path"]},
 		},
 	}
 }
@ -189,10 +169,51 @@ func componentPod(container api.Container, volumes ...api.Volume) api.Pod {
 	}
 }

-func getImageEntrypoint(component string, useHyperkube bool) []string {
-	if useHyperkube {
-		return []string{"/hyperkube", component}
+func getComponentCommand(component string, s *kubeadmapi.KubeadmConfig) (command []string) {
+	baseFalgs := map[string][]string{
+		apiServer: []string{
+			"--address=127.0.0.1",
+			"--etcd-servers=http://127.0.0.1:2379",
+			"--admission-control=NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,ResourceQuota",
+			"--service-cluster-ip-range=" + s.InitFlags.Services.CIDR.String(),
+			"--service-account-key-file=/etc/kubernetes/pki/apiserver-key.pem",
+			"--client-ca-file=/etc/kubernetes/pki/ca.pem",
+			"--tls-cert-file=/etc/kubernetes/pki/apiserver.pem",
+			"--tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem",
+			"--secure-port=443",
+			"--allow-privileged",
+			"--token-auth-file=/etc/kubernetes/pki/tokens.csv",
+		},
+		controllerManager: []string{
+			"--leader-elect",
+			"--master=127.0.0.1:8080",
+			DefaultClusterName,
+			"--root-ca-file=/etc/kubernetes/pki/ca.pem",
+			"--service-account-private-key-file=/etc/kubernetes/pki/apiserver-key.pem",
+			"--cluster-signing-cert-file=/etc/kubernetes/pki/ca.pem",
+			"--cluster-signing-key-file=/etc/kubernetes/pki/ca-key.pem",
+			"--insecure-experimental-approve-all-kubelet-csrs-for-group=system:kubelet-bootstrap",
+			"--cluster-cidr=" + s.InitFlags.Services.CIDR.String(),
+		},
+		scheduler: []string{
+			"--leader-elect",
+			"--master=127.0.0.1:8080",
+		},
+		proxy: []string{},
 	}

-	return []string{"/usr/local/bin/kube-" + component} 
+	if s.EnvParams["hyperkube_image"] != "" {
+		command = []string{"/hyperkube", component}
+	} else {
+		command = []string{"/usr/local/bin/kube-" + component}
+	}
+
+	command = append(command, s.EnvParams["component_loglevel"])
+	command = append(command, baseFalgs[component]...)
+
+	if component == controllerManager && s.InitFlags.CloudProvider != "" {
+		command = append(command, "--cloud-provider="+s.InitFlags.CloudProvider)
+	}
+
+	return
 }
--- a/pkg/kubeadm/master/pki.go
+++ b/pkg/kubeadm/master/pki.go
@ -20,10 +20,10 @@ import (
 	"crypto/rsa"
 	"crypto/x509"
 	"fmt"
-	"net"
 	"path"

 	kubeadmapi "k8s.io/kubernetes/pkg/kubeadm/api"
+	ipallocator "k8s.io/kubernetes/pkg/registry/service/ipallocator"
 	certutil "k8s.io/kubernetes/pkg/util/cert"
 )

@ -51,19 +51,26 @@ func newCertificateAuthority() (*rsa.PrivateKey, *x509.Certificate, error) {
 	return key, cert, nil
 }

-func newServerKeyAndCert(caCert *x509.Certificate, caKey *rsa.PrivateKey, altNames certutil.AltNames) (*rsa.PrivateKey, *x509.Certificate, error) {
+func newServerKeyAndCert(s *kubeadmapi.KubeadmConfig, caCert *x509.Certificate, caKey *rsa.PrivateKey, altNames certutil.AltNames) (*rsa.PrivateKey, *x509.Certificate, error) {
 	key, err := certutil.NewPrivateKey()
 	if err != nil {
 		return nil, nil, fmt.Errorf("unabel to create private key [%s]", err)
 	}
-	// TODO these are all hardcoded for now, but we need to figure out what shall we do here exactly
-	altNames.IPs = append(altNames.IPs, net.ParseIP("10.3.0.1"), net.ParseIP("10.16.0.1"), net.ParseIP("100.64.0.1"))
-	altNames.DNSNames = append(altNames.DNSNames,
+
+	internalAPIServerFQDN := []string{
 		"kubernetes",
 		"kubernetes.default",
 		"kubernetes.default.svc",
-		"kubernetes.default.svc.cluster.local",
-	)
+		fmt.Sprintf("kubernetes.default.svc.%s", s.InitFlags.Services.DNSDomain),
+	}
+
+	internalAPIServerVirtualIP, err := ipallocator.GetIndexedIP(&s.InitFlags.Services.CIDR, 1)
+	if err != nil {
+		return nil, nil, fmt.Errorf("unable to allocate IP address for the API server from the given CIDR (%q) [%s]")
+	}
+
+	altNames.IPs = append(altNames.IPs, internalAPIServerVirtualIP)
+	altNames.DNSNames = append(altNames.DNSNames, internalAPIServerFQDN...)

 	config := certutil.CertConfig{
 		CommonName: "kube-apiserver",
@ -131,21 +138,21 @@ func newServiceAccountKey() (*rsa.PrivateKey, error) {
 	return key, nil
 }

-func CreatePKIAssets(params *kubeadmapi.BootstrapParams) (*rsa.PrivateKey, *x509.Certificate, error) {
+func CreatePKIAssets(s *kubeadmapi.KubeadmConfig) (*rsa.PrivateKey, *x509.Certificate, error) {
 	var (
 		err      error
-		altNames certutil.AltNames // TODO actual SANs
+		altNames certutil.AltNames
 	)

-	if params.Discovery.ListenIP != nil {
-		altNames.IPs = append(altNames.IPs, params.Discovery.ListenIP)
+	if len(s.InitFlags.API.AdvertiseAddrs) > 0 {
+		altNames.IPs = append(altNames.IPs, s.InitFlags.API.AdvertiseAddrs...)
 	}

-	if params.Discovery.ApiServerDNSName != "" {
-		altNames.DNSNames = append(altNames.DNSNames, params.Discovery.ApiServerDNSName)
+	if len(s.InitFlags.API.ExternalDNSName) > 0 {
+		altNames.DNSNames = append(altNames.DNSNames, s.InitFlags.API.ExternalDNSName...)
 	}

-	pkiPath := path.Join(params.EnvParams["host_pki_path"])
+	pkiPath := path.Join(s.EnvParams["host_pki_path"])

 	caKey, caCert, err := newCertificateAuthority()
 	if err != nil {
@ -156,7 +163,7 @@ func CreatePKIAssets(params *kubeadmapi.BootstrapParams) (*rsa.PrivateKey, *x509
 		return nil, nil, fmt.Errorf("<master/pki> failure while saving CA keys and certificate - %s", err)
 	}

-	apiKey, apiCert, err := newServerKeyAndCert(caCert, caKey, altNames)
+	apiKey, apiCert, err := newServerKeyAndCert(s, caCert, caKey, altNames)
 	if err != nil {
 		return nil, nil, fmt.Errorf("<master/pki> failure while creating API server keys and certificate - %s", err)
 	}
@ -174,7 +181,7 @@ func CreatePKIAssets(params *kubeadmapi.BootstrapParams) (*rsa.PrivateKey, *x509
 		return nil, nil, fmt.Errorf("<master/pki> failure while saving service account singing keys - %s", err)
 	}

-	// TODO print a summary of SANs used and checksums (signatures) of each of the certiicates
-	fmt.Printf("<master/pki> created keys and certificates in %q\n", params.EnvParams["host_pki_path"])
+	// TODO(phase1+) print a summary of SANs used and checksums (signatures) of each of the certiicates
+	fmt.Printf("<master/pki> created keys and certificates in %q\n", pkiPath)
 	return caKey, caCert, nil
 }
--- a/pkg/kubeadm/master/tokens.go
+++ b/pkg/kubeadm/master/tokens.go
@ -28,17 +28,17 @@ import (
 	"k8s.io/kubernetes/pkg/util/uuid"
 )

-func generateTokenIfNeeded(params *kubeadmapi.BootstrapParams) error {
-	ok, err := kubeadmutil.UseGivenTokenIfValid(params)
+func generateTokenIfNeeded(s *kubeadmapi.KubeadmConfig) error {
+	ok, err := kubeadmutil.UseGivenTokenIfValid(s)
 	if !ok {
 		if err != nil {
 			return err
 		}
-		err = kubeadmutil.GenerateToken(params)
+		err = kubeadmutil.GenerateToken(s)
 		if err != nil {
 			return err
 		}
-		fmt.Printf("<master/tokens> generated token: %q\n", params.Discovery.GivenToken)
+		fmt.Printf("<master/tokens> generated token: %q\n", s.Secrets.GivenToken)
 	} else {
 		fmt.Println("<master/tokens> accepted provided token")
 	}
@ -46,15 +46,15 @@ func generateTokenIfNeeded(params *kubeadmapi.BootstrapParams) error {
 	return nil
 }

-func CreateTokenAuthFile(params *kubeadmapi.BootstrapParams) error {
-	tokenAuthFilePath := path.Join(params.EnvParams["host_pki_path"], "tokens.csv")
-	if err := generateTokenIfNeeded(params); err != nil {
+func CreateTokenAuthFile(s *kubeadmapi.KubeadmConfig) error {
+	tokenAuthFilePath := path.Join(s.EnvParams["host_pki_path"], "tokens.csv")
+	if err := generateTokenIfNeeded(s); err != nil {
 		return fmt.Errorf("<master/tokens> failed to generate token(s) [%s]", err)
 	}
-	if err := os.MkdirAll(params.EnvParams["host_pki_path"], 0700); err != nil {
-		return fmt.Errorf("<master/tokens> failed to create directory %q [%s]", params.EnvParams["host_pki_path"], err)
+	if err := os.MkdirAll(s.EnvParams["host_pki_path"], 0700); err != nil {
+		return fmt.Errorf("<master/tokens> failed to create directory %q [%s]", s.EnvParams["host_pki_path"], err)
 	}
-	serialized := []byte(fmt.Sprintf("%s,kubeadm-node-csr,%s,system:kubelet-bootstrap\n", params.Discovery.BearerToken, uuid.NewUUID()))
+	serialized := []byte(fmt.Sprintf("%s,kubeadm-node-csr,%s,system:kubelet-bootstrap\n", s.Secrets.BearerToken, uuid.NewUUID()))
 	if err := cmdutil.DumpReaderToFile(bytes.NewReader(serialized), tokenAuthFilePath); err != nil {
 		return fmt.Errorf("<master/tokens> failed to save token auth file (%q) [%s]", tokenAuthFilePath, err)
 	}
--- a/pkg/kubeadm/node/csr.go
+++ b/pkg/kubeadm/node/csr.go
@ -34,17 +34,17 @@ func getNodeName() string {
 	return "TODO"
 }

-func PerformTLSBootstrapFromParams(params *kubeadmapi.BootstrapParams) (*clientcmdapi.Config, error) {
-	caCert, err := ioutil.ReadFile(params.Discovery.CaCertFile)
+func PerformTLSBootstrapFromConfig(s *kubeadmapi.KubeadmConfig) (*clientcmdapi.Config, error) {
+	caCert, err := ioutil.ReadFile(s.ManualFlags.CaCertFile)
 	if err != nil {
 		return nil, fmt.Errorf("<node/csr> failed to load CA certificate [%s]", err)
 	}

-	return PerformTLSBootstrap(params, strings.Split(params.Discovery.ApiServerURLs, ",")[0], caCert)
+	return PerformTLSBootstrap(s, strings.Split(s.ManualFlags.ApiServerURLs, ",")[0], caCert)
 }

 // Create a restful client for doing the certificate signing request.
-func PerformTLSBootstrap(params *kubeadmapi.BootstrapParams, apiEndpoint string, caCert []byte) (*clientcmdapi.Config, error) {
+func PerformTLSBootstrap(s *kubeadmapi.KubeadmConfig, apiEndpoint string, caCert []byte) (*clientcmdapi.Config, error) {
 	// TODO try all the api servers until we find one that works
 	bareClientConfig := kubeadmutil.CreateBasicClientConfig("kubernetes", apiEndpoint, caCert)

@ -52,7 +52,7 @@ func PerformTLSBootstrap(params *kubeadmapi.BootstrapParams, apiEndpoint string,

 	bootstrapClientConfig, err := clientcmd.NewDefaultClientConfig(
 		*kubeadmutil.MakeClientConfigWithToken(
-			bareClientConfig, "kubernetes", fmt.Sprintf("kubelet-%s", nodeName), params.Discovery.BearerToken,
+			bareClientConfig, "kubernetes", fmt.Sprintf("kubelet-%s", nodeName), s.Secrets.BearerToken,
 		),
 		&clientcmd.ConfigOverrides{},
 	).ClientConfig()
--- a/pkg/kubeadm/node/discovery.go
+++ b/pkg/kubeadm/node/discovery.go
@ -22,23 +22,15 @@ import (
 	"fmt"
 	"io"
 	"net/http"
-	"net/url"
-	"strings"

 	jose "github.com/square/go-jose"
 	clientcmdapi "k8s.io/kubernetes/pkg/client/unversioned/clientcmd/api"
 	kubeadmapi "k8s.io/kubernetes/pkg/kubeadm/api"
 )

-func RetrieveTrustedClusterInfo(params *kubeadmapi.BootstrapParams) (*clientcmdapi.Config, error) {
-	firstURL := strings.Split(params.Discovery.ApiServerURLs, ",")[0] // TODO obviously we should do something better.. .
-	apiServerURL, err := url.Parse(firstURL)
-	if err != nil {
-		return nil, fmt.Errorf("<node/discovery> failed to parse given API server URL (%q) [%s]", firstURL, err)
-	}
-
-	host, port := strings.Split(apiServerURL.Host, ":")[0], 9898 // TODO this is too naive
-	requestURL := fmt.Sprintf("http://%s:%d/cluster-info/v1/?token-id=%s", host, port, params.Discovery.TokenID)
+func RetrieveTrustedClusterInfo(s *kubeadmapi.KubeadmConfig) (*clientcmdapi.Config, error) {
+	host, port := s.JoinFlags.MasterAddrs[0].String(), 9898
+	requestURL := fmt.Sprintf("http://%s:%d/cluster-info/v1/?token-id=%s", host, port, s.Secrets.TokenID)
 	req, err := http.NewRequest("GET", requestURL, nil)
 	if err != nil {
 		return nil, fmt.Errorf("<node/discovery> failed to consturct an HTTP request [%s]", err)
@ -61,7 +53,7 @@ func RetrieveTrustedClusterInfo(params *kubeadmapi.BootstrapParams) (*clientcmda

 	fmt.Println("<node/discovery> cluster info object received, verifying signature using given token")

-	output, err := object.Verify(params.Discovery.Token)
+	output, err := object.Verify(s.Secrets.Token)
 	if err != nil {
 		return nil, fmt.Errorf("<node/discovery> failed to verify JWS signature of received cluster info object [%s]", err)
 	}
@ -84,5 +76,5 @@ func RetrieveTrustedClusterInfo(params *kubeadmapi.BootstrapParams) (*clientcmda
 	apiServer := clusterInfo.Endpoints[0]
 	caCert := []byte(clusterInfo.CertificateAuthorities[0])

-	return PerformTLSBootstrap(params, apiServer, caCert)
+	return PerformTLSBootstrap(s, apiServer, caCert)
 }
--- a/pkg/kubeadm/util/kubeconfig.go
+++ b/pkg/kubeadm/util/kubeconfig.go
@ -81,12 +81,12 @@ func MakeClientConfigWithToken(config *clientcmdapi.Config, clusterName string,
 // running in that case - they'd need to stop the kubelet, remove the file, and
 // start it again in that case).

-func WriteKubeconfigIfNotExists(params *kubeadmapi.BootstrapParams, name string, kubeconfig *clientcmdapi.Config) error {
-	if err := os.MkdirAll(params.EnvParams["prefix"], 0700); err != nil {
-		return fmt.Errorf("<util/kubeconfig> failed to create directory %q [%s]", params.EnvParams["prefix"], err)
+func WriteKubeconfigIfNotExists(s *kubeadmapi.KubeadmConfig, name string, kubeconfig *clientcmdapi.Config) error {
+	if err := os.MkdirAll(s.EnvParams["prefix"], 0700); err != nil {
+		return fmt.Errorf("<util/kubeconfig> failed to create directory %q [%s]", s.EnvParams["prefix"], err)
 	}

-	filename := path.Join(params.EnvParams["prefix"], fmt.Sprintf("%s.conf", name))
+	filename := path.Join(s.EnvParams["prefix"], fmt.Sprintf("%s.conf", name))
 	// Create and open the file, only if it does not already exist.
 	f, err := os.OpenFile(
 		filename,
--- a/pkg/kubeadm/util/tokens.go
+++ b/pkg/kubeadm/util/tokens.go
@ -42,7 +42,7 @@ func randBytes(length int) ([]byte, string, error) {
 	return b, hex.EncodeToString(b), nil
 }

-func GenerateToken(params *kubeadmapi.BootstrapParams) error {
+func GenerateToken(s *kubeadmapi.KubeadmConfig) error {
 	_, tokenID, err := randBytes(TokenIDLen / 2)
 	if err != nil {
 		return err
@ -53,19 +53,19 @@ func GenerateToken(params *kubeadmapi.BootstrapParams) error {
 		return err
 	}

-	params.Discovery.TokenID = tokenID
-	params.Discovery.BearerToken = token
-	params.Discovery.Token = tokenBytes
-	params.Discovery.GivenToken = fmt.Sprintf("%s.%s", tokenID, token)
+	s.Secrets.TokenID = tokenID
+	s.Secrets.BearerToken = token
+	s.Secrets.Token = tokenBytes
+	s.Secrets.GivenToken = fmt.Sprintf("%s.%s", tokenID, token)
 	return nil
 }

-func UseGivenTokenIfValid(params *kubeadmapi.BootstrapParams) (bool, error) {
-	if params.Discovery.GivenToken == "" {
+func UseGivenTokenIfValid(s *kubeadmapi.KubeadmConfig) (bool, error) {
+	if s.Secrets.GivenToken == "" {
 		return false, nil // not given
 	}
 	fmt.Println("<util/tokens> validating provided token")
-	givenToken := strings.Split(strings.ToLower(params.Discovery.GivenToken), ".")
+	givenToken := strings.Split(strings.ToLower(s.Secrets.GivenToken), ".")
 	// TODO print desired format
 	// TODO could also print more specific messages in each case
 	invalidErr := "<util/tokens> provided token is invalid - %s"
@ -86,8 +86,8 @@ func UseGivenTokenIfValid(params *kubeadmapi.BootstrapParams) (bool, error) {
 			"length of second part is incorrect [%d (given) != %d (expected)]",
 			len(tokenBytes), TokenBytes))
 	}
-	params.Discovery.TokenID = givenToken[0]
-	params.Discovery.BearerToken = givenToken[1]
-	params.Discovery.Token = tokenBytes
+	s.Secrets.TokenID = givenToken[0]
+	s.Secrets.BearerToken = givenToken[1]
+	s.Secrets.Token = tokenBytes
 	return true, nil // given and valid
 }