diff --git a/apis/v1alpha1/cluster.go b/apis/v1alpha1/cluster.go
new file mode 100644
index 00000000..c72f7408
--- /dev/null
+++ b/apis/v1alpha1/cluster.go
@@ -0,0 +1,58 @@
+package v1alpha1
+
+type ClusterCfg struct {
+	Hosts           []HostCfg          `yaml:"hosts" json:"hosts,omitempty"`
+	LBKubeApiserver LBKubeApiserverCfg `yaml:"lb_kubeapiserver" json:"lb_kubeapiserver,omitempty"`
+	KubeVersion     string             `yaml:"kube_version" json:"kube_version,omitempty"`
+	KubeImageRepo   string             `yaml:"kube_image_repo" json:"kube_image_repo,omitempty"`
+	KubeClusterName string             `yaml:"kube_cluster_name" json:"kube_cluster_name,omitempty"`
+	Network         NetworkConfig      `yaml:"network" json:"network,omitempty"`
+}
+
+type HostCfg struct {
+	HostName        string   `yaml:"hostName,omitempty" json:"hostName,omitempty"`
+	Address         string   `yaml:"address" json:"address,omitempty"`
+	Port            string   `yaml:"port" json:"port,omitempty"`
+	InternalAddress string   `yaml:"internal_address" json:"internalAddress,omitempty"`
+	Role            []string `yaml:"role" json:"role,omitempty" norman:"type=array[enum],options=etcd|worker|worker"`
+	//HostnameOverride string   `yaml:"hostname_override" json:"hostnameOverride,omitempty"`
+	User     string `yaml:"user" json:"user,omitempty"`
+	Password string `yaml:"password" json:"password,omitempty"`
+	//SSHAgentAuth     bool              `yaml:"ssh_agent_auth,omitempty" json:"sshAgentAuth,omitempty"`
+	//SSHKey           string            `yaml:"ssh_key" json:"sshKey,omitempty" norman:"type=password"`
+	SSHKeyPath string `yaml:"ssh_key_path" json:"sshKeyPath,omitempty"`
+	//SSHCert          string            `yaml:"ssh_cert" json:"sshCert,omitempty"`
+	//SSHCertPath      string            `yaml:"ssh_cert_path" json:"sshCertPath,omitempty"`
+	//Labels map[string]string `yaml:"labels" json:"labels,omitempty"`
+	//Taints []Taint           `yaml:"taints" json:"taints,omitempty"`
+}
+
+type Taint struct {
+	Key    string      `json:"key,omitempty" yaml:"key"`
+	Value  string      `json:"value,omitempty" yaml:"value"`
+	Effect TaintEffect `json:"effect,omitempty" yaml:"effect"`
+}
+
+type TaintEffect string
+
+const (
+	TaintEffectNoSchedule       TaintEffect = "NoSchedule"
+	TaintEffectPreferNoSchedule TaintEffect = "PreferNoSchedule"
+	TaintEffectNoExecute        TaintEffect = "NoExecute"
+)
+
+type NodeInfo struct {
+	HostName string
+}
+
+type NetworkConfig struct {
+	Plugin          string `yaml:"plugin" json:"plugin,omitempty"`
+	KubePodsCIDR    string `yaml:"kube_pods_cidr" json:"kube_pods_cidr,omitempty"`
+	KubeServiceCIDR string `yaml:"kube_service_cidr" json:"kube_service_cidr,omitempty"`
+}
+
+type LBKubeApiserverCfg struct {
+	Domain  string `yaml:"domain" json:"domain,omitempty"`
+	Address string `yaml:"address" json:"address,omitempty"`
+	Port    string `yaml:"port" json:"port,omitempty"`
+}
diff --git a/apis/v1alpha1/config.go b/apis/v1alpha1/config.go
new file mode 100644
index 00000000..e949e559
--- /dev/null
+++ b/apis/v1alpha1/config.go
@@ -0,0 +1,65 @@
+package v1alpha1
+
+import (
+	"fmt"
+	"gopkg.in/yaml.v2"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+)
+
+func GetClusterCfg(clusterCfgFile string) *ClusterCfg {
+	if clusterCfgFile != "" {
+		clusterInfo, err := ResolveClusterInfoFile(clusterCfgFile)
+		if err != nil {
+			log.Fatal("Failed to parse the configuration file: ", err)
+		}
+		return clusterInfo
+	} else {
+		clusterInfo := &ClusterCfg{
+			Hosts: []HostCfg{{
+				Role: []string{"etcd", "master", "worker"},
+				User: "root",
+			}},
+			Network: NetworkConfig{
+				Plugin:          DefaultNetworkPlugin,
+				KubePodsCIDR:    DefaultPodsCIDR,
+				KubeServiceCIDR: DefaultServiceCIDR,
+			},
+		}
+		return clusterInfo
+	}
+}
+
+func ResolveClusterInfoFile(configFile string) (*ClusterCfg, error) {
+	fp, err := filepath.Abs(configFile)
+	if err != nil {
+		return nil, fmt.Errorf("failed to lookup current directory name: %v", err)
+	}
+	file, err := os.Open(fp)
+	if err != nil {
+		return nil, fmt.Errorf("can not find cluster info file: %v", err)
+	}
+	defer file.Close()
+
+	clusterInfo, err := GetYamlFile(configFile)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read file: %v", err)
+	}
+
+	return clusterInfo, nil
+}
+
+func GetYamlFile(filePath string) (*ClusterCfg, error) {
+	result := ClusterCfg{}
+	b, err := ioutil.ReadFile(filePath)
+	if err != nil {
+		return nil, err
+	}
+	//var m HostJson
+	err = yaml.Unmarshal(b, &result)
+	if err != nil {
+		return nil, err
+	}
+	return &result, nil
+}
diff --git a/apis/v1alpha1/default.go b/apis/v1alpha1/default.go
new file mode 100644
index 00000000..fb90e439
--- /dev/null
+++ b/apis/v1alpha1/default.go
@@ -0,0 +1,44 @@
+package v1alpha1
+
+const (
+	DefaultPreDir         = "/tmp/kubekey"
+	DefaultSSHPort        = "22"
+	DefaultDockerSockPath = "/var/run/docker.sock"
+	DefaultLBPort         = "6443"
+	DefaultLBDomain       = "lb.kubesphere.local"
+	DefaultNetworkPlugin  = "calico"
+	DefaultPodsCIDR       = "10.233.64.0/18"
+	DefaultServiceCIDR    = "10.233.0.0/18"
+	DefaultKubeImageRepo  = "kubekey"
+	DefaultClusterName    = "cluster.local"
+	DefaultArch           = "amd64"
+	DefaultHostName       = "allinone"
+	DefaultEtcdRepo       = "kubekey/etcd"
+	DefaultEtcdVersion    = "v3.3.12"
+	DefaultEtcdPort       = "2379"
+	DefaultKubeVersion    = "v1.17.4"
+	DefaultCniVersion     = "v0.8.2"
+	DefaultHelmVersion    = "v3.1.2"
+	ETCDRole              = "etcd"
+	MasterRole            = "master"
+	WorkerRole            = "worker"
+)
+
+type HostConfig struct {
+	ID                int    `json:"-"`
+	PublicAddress     string `json:"publicAddress"`
+	PrivateAddress    string `json:"privateAddress"`
+	SSHPort           int    `json:"sshPort"`
+	SSHUsername       string `json:"sshUsername"`
+	SSHPrivateKeyFile string `json:"sshPrivateKeyFile"`
+	SSHAgentSocket    string `json:"sshAgentSocket"`
+	Bastion           string `json:"bastion"`
+	BastionPort       int    `json:"bastionPort"`
+	BastionUser       string `json:"bastionUser"`
+	Hostname          string `json:"hostname"`
+	IsLeader          bool   `json:"isLeader"`
+	Untaint           bool   `json:"untaint"`
+
+	// Information populated at the runtime
+	OperatingSystem string `json:"-"`
+}
diff --git a/apis/v1alpha1/type.go b/apis/v1alpha1/type.go
deleted file mode 100644
index 2f8f53a6..00000000
--- a/apis/v1alpha1/type.go
+++ /dev/null
@@ -1,20 +0,0 @@
-package v1alpha1
-
-type HostConfig struct {
-	ID                int    `json:"-"`
-	PublicAddress     string `json:"publicAddress"`
-	PrivateAddress    string `json:"privateAddress"`
-	SSHPort           int    `json:"sshPort"`
-	SSHUsername       string `json:"sshUsername"`
-	SSHPrivateKeyFile string `json:"sshPrivateKeyFile"`
-	SSHAgentSocket    string `json:"sshAgentSocket"`
-	Bastion           string `json:"bastion"`
-	BastionPort       int    `json:"bastionPort"`
-	BastionUser       string `json:"bastionUser"`
-	Hostname          string `json:"hostname"`
-	IsLeader          bool   `json:"isLeader"`
-	Untaint           bool   `json:"untaint"`
-
-	// Information populated at the runtime
-	OperatingSystem string `json:"-"`
-}
diff --git a/install/install.go b/install/install.go
new file mode 100644
index 00000000..0db63e06
--- /dev/null
+++ b/install/install.go
@@ -0,0 +1,9 @@
+package install
+
+import (
+	kubekeyapi "github.com/pixiake/kubekey/apis/v1alpha1"
+)
+
+func CreateCluster(clusterCfgFile string, addons string, pkg string) {
+	kubekeyapi.GetClusterCfg(clusterCfgFile)
+}