diff --git a/pkg/api/types.go b/pkg/api/types.go
index f060c2f89b5..abd6578996b 100644
--- a/pkg/api/types.go
+++ b/pkg/api/types.go
@@ -658,6 +658,54 @@ type NodeSpec struct {
 type NodeStatus struct {
 	// Queried from cloud provider, if available.
 	HostIP string `json:"hostIP,omitempty"`
+	// NodePhase is the current lifecycle phase of the node.
+	Phase NodePhase `json:"phase,omitempty"`
+	// Conditions is an array of current node conditions.
+	Conditions []NodeCondition `json:"conditions,omitempty"`
+}
+
+type NodePhase string
+
+// These are the valid phases of node.
+const (
+	// NodePending means the node has been created/added by the system, but not configured.
+	NodePending NodePhase = "Pending"
+	// NodeRunning means the node has been configured and has Kubernetes components running.
+	NodeRunning NodePhase = "Running"
+	// NodeTerminated means the node has been removed from the cluster.
+	NodeTerminated NodePhase = "Terminated"
+)
+
+type NodeConditionKind string
+
+// These are valid conditions of node. Currently, we don't have enough information to decide
+// node condition. In the future, we will add more. The proposed set of conditions are:
+// NodeReachable, NodeLive, NodeReady, NodeSchedulable, NodeRunnable.
+const (
+	// NodeReachable means the node can be reached (in the sense of HTTP connection) from node controller.
+	NodeReachable NodeConditionKind = "Reachable"
+	// NodeReady means the node returns StatusOK for HTTP health check.
+	NodeReady NodeConditionKind = "Ready"
+)
+
+type NodeConditionStatus string
+
+// These are valid condition status. "ConditionFull" means node is in the condition;
+// "ConditionNone" means node is not in the condition; "ConditionUnknown" means kubernetes
+// can't decide if node is in the condition or not. In the future, we could add other
+// intermediate conditions, e.g. ConditionDegraded.
+const (
+	ConditionFull    NodeConditionStatus = "Full"
+	ConditionNone    NodeConditionStatus = "None"
+	ConditionUnknown NodeConditionStatus = "Unknown"
+)
+
+type NodeCondition struct {
+	Kind               NodeConditionKind   `json:"kind"`
+	Status             NodeConditionStatus `json:"status"`
+	LastTransitionTime util.Time           `json:"lastTransitionTime,omitempty"`
+	Reason             string              `json:"reason,omitempty"`
+	Message            string              `json:"message,omitempty"`
 }
 
 // NodeResources is an object for conveying resource information about a node.
diff --git a/pkg/api/v1beta1/conversion.go b/pkg/api/v1beta1/conversion.go
index 56a13ae20cb..e96de46487b 100644
--- a/pkg/api/v1beta1/conversion.go
+++ b/pkg/api/v1beta1/conversion.go
@@ -454,6 +454,12 @@ func init() {
 			if err := s.Convert(&in.ObjectMeta.Labels, &out.Labels, 0); err != nil {
 				return err
 			}
+			if err := s.Convert(&in.Status.Phase, &out.Status.Phase, 0); err != nil {
+				return err
+			}
+			if err := s.Convert(&in.Status.Conditions, &out.Status.Conditions, 0); err != nil {
+				return err
+			}
 
 			out.HostIP = in.Status.HostIP
 			return s.Convert(&in.Spec.Capacity, &out.NodeResources.Capacity, 0)
@@ -468,6 +474,12 @@ func init() {
 			if err := s.Convert(&in.Labels, &out.ObjectMeta.Labels, 0); err != nil {
 				return err
 			}
+			if err := s.Convert(&in.Status.Phase, &out.Status.Phase, 0); err != nil {
+				return err
+			}
+			if err := s.Convert(&in.Status.Conditions, &out.Status.Conditions, 0); err != nil {
+				return err
+			}
 
 			out.Status.HostIP = in.HostIP
 			return s.Convert(&in.NodeResources.Capacity, &out.Spec.Capacity, 0)
diff --git a/pkg/api/v1beta1/types.go b/pkg/api/v1beta1/types.go
index cbc0e8439bc..e96823ae66d 100644
--- a/pkg/api/v1beta1/types.go
+++ b/pkg/api/v1beta1/types.go
@@ -496,6 +496,58 @@ type EndpointsList struct {
 	Items    []Endpoints `json:"items" description:"list of service endpoint lists"`
 }
 
+// NodeStatus is information about the current status of a node.
+type NodeStatus struct {
+	// NodePhase is the current lifecycle phase of the node.
+	Phase NodePhase `json:"phase,omitempty" description:"node phase is the current lifecycle phase of the node"`
+	// Conditions is an array of current node conditions.
+	Conditions []NodeCondition `json:"conditions,omitempty" description:"conditions is an array of current node conditions"`
+}
+
+type NodePhase string
+
+// These are the valid phases of node.
+const (
+	// NodePending means the node has been created/added by the system, but not configured.
+	NodePending NodePhase = "Pending"
+	// NodeRunning means the node has been configured and has Kubernetes components running.
+	NodeRunning NodePhase = "Running"
+	// NodeTerminated means the node has been removed from the cluster.
+	NodeTerminated NodePhase = "Terminated"
+)
+
+type NodeConditionKind string
+
+// These are valid conditions of node. Currently, we don't have enough information to decide
+// node condition. In the future, we will add more. The proposed set of conditions are:
+// NodeReachable, NodeLive, NodeReady, NodeSchedulable, NodeRunnable.
+const (
+	// NodeReachable means the node can be reached (in the sense of HTTP connection) from node controller.
+	NodeReachable NodeConditionKind = "Reachable"
+	// NodeReady means the node returns StatusOK for HTTP health check.
+	NodeReady NodeConditionKind = "Ready"
+)
+
+type NodeConditionStatus string
+
+// These are valid condition status. "ConditionFull" means node is in the condition;
+// "ConditionNone" means node is not in the condition; "ConditionUnknown" means kubernetes
+// can't decide if node is in the condition or not. In the future, we could add other
+// intermediate conditions, e.g. ConditionDegraded.
+const (
+	ConditionFull    NodeConditionStatus = "Full"
+	ConditionNone    NodeConditionStatus = "None"
+	ConditionUnknown NodeConditionStatus = "Unknown"
+)
+
+type NodeCondition struct {
+	Kind               NodeConditionKind   `json:"kind" description:"kind of the condition, one of reachable, ready"`
+	Status             NodeConditionStatus `json:"status" description:"status of the condition, one of full, none, unknown"`
+	LastTransitionTime util.Time           `json:"lastTransitionTime,omitempty" description:"last time the condition transit from one status to another"`
+	Reason             string              `json:"reason,omitempty" description:"(brief) reason for the condition's last transition"`
+	Message            string              `json:"message,omitempty" description:"human readable message indicating details about last transition"`
+}
+
 // NodeResources represents resources on a Kubernetes system node
 // see https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/resources.md for more details.
 type NodeResources struct {
@@ -515,6 +567,8 @@ type Minion struct {
 	HostIP string `json:"hostIP,omitempty" description:"IP address of the node"`
 	// Resources available on the node
 	NodeResources NodeResources `json:"resources,omitempty" description:"characterization of node resources"`
+	// Status describes the current status of a node
+	Status NodeStatus `json:"status,omitempty" description:"current status of node"`
 	// Labels for the node
 	Labels map[string]string `json:"labels,omitempty" description:"map of string keys and values that can be used to organize and categorize minions; labels of a minion assigned by the scheduler must match the scheduled pod's nodeSelector"`
 }
diff --git a/pkg/api/v1beta2/conversion.go b/pkg/api/v1beta2/conversion.go
index 3754b302b63..b65851e1b41 100644
--- a/pkg/api/v1beta2/conversion.go
+++ b/pkg/api/v1beta2/conversion.go
@@ -384,6 +384,12 @@ func init() {
 			if err := s.Convert(&in.ObjectMeta.Labels, &out.Labels, 0); err != nil {
 				return err
 			}
+			if err := s.Convert(&in.Status.Phase, &out.Status.Phase, 0); err != nil {
+				return err
+			}
+			if err := s.Convert(&in.Status.Conditions, &out.Status.Conditions, 0); err != nil {
+				return err
+			}
 
 			out.HostIP = in.Status.HostIP
 			return s.Convert(&in.Spec.Capacity, &out.NodeResources.Capacity, 0)
@@ -398,6 +404,12 @@ func init() {
 			if err := s.Convert(&in.Labels, &out.ObjectMeta.Labels, 0); err != nil {
 				return err
 			}
+			if err := s.Convert(&in.Status.Phase, &out.Status.Phase, 0); err != nil {
+				return err
+			}
+			if err := s.Convert(&in.Status.Conditions, &out.Status.Conditions, 0); err != nil {
+				return err
+			}
 
 			out.Status.HostIP = in.HostIP
 			return s.Convert(&in.NodeResources.Capacity, &out.Spec.Capacity, 0)
diff --git a/pkg/api/v1beta2/types.go b/pkg/api/v1beta2/types.go
index 0ab546fed00..a7fd3e18087 100644
--- a/pkg/api/v1beta2/types.go
+++ b/pkg/api/v1beta2/types.go
@@ -461,6 +461,58 @@ type EndpointsList struct {
 	Items    []Endpoints `json:"items" description:"list of service endpoint lists"`
 }
 
+// NodeStatus is information about the current status of a node.
+type NodeStatus struct {
+	// NodePhase is the current lifecycle phase of the node.
+	Phase NodePhase `json:"phase,omitempty" description:"node phase is the current lifecycle phase of the node"`
+	// Conditions is an array of current node conditions.
+	Conditions []NodeCondition `json:"conditions,omitempty" description:"conditions is an array of current node conditions"`
+}
+
+type NodePhase string
+
+// These are the valid phases of node.
+const (
+	// NodePending means the node has been created/added by the system, but not configured.
+	NodePending NodePhase = "Pending"
+	// NodeRunning means the node has been configured and has Kubernetes components running.
+	NodeRunning NodePhase = "Running"
+	// NodeTerminated means the node has been removed from the cluster.
+	NodeTerminated NodePhase = "Terminated"
+)
+
+type NodeConditionKind string
+
+// These are valid conditions of node. Currently, we don't have enough information to decide
+// node condition. In the future, we will add more. The proposed set of conditions are:
+// NodeReachable, NodeLive, NodeReady, NodeSchedulable, NodeRunnable.
+const (
+	// NodeReachable means the node can be reached (in the sense of HTTP connection) from node controller.
+	NodeReachable NodeConditionKind = "Reachable"
+	// NodeReady means the node returns StatusOK for HTTP health check.
+	NodeReady NodeConditionKind = "Ready"
+)
+
+type NodeConditionStatus string
+
+// These are valid condition status. "ConditionFull" means node is in the condition;
+// "ConditionNone" means node is not in the condition; "ConditionUnknown" means kubernetes
+// can't decide if node is in the condition or not. In the future, we could add other
+// intermediate conditions, e.g. ConditionDegraded.
+const (
+	ConditionFull    NodeConditionStatus = "Full"
+	ConditionNone    NodeConditionStatus = "None"
+	ConditionUnknown NodeConditionStatus = "Unknown"
+)
+
+type NodeCondition struct {
+	Kind               NodeConditionKind   `json:"kind" description:"kind of the condition, one of reachable, ready"`
+	Status             NodeConditionStatus `json:"status" description:"status of the condition, one of full, none, unknown"`
+	LastTransitionTime util.Time           `json:"lastTransitionTime,omitempty" description:"last time the condition transit from one status to another"`
+	Reason             string              `json:"reason,omitempty" description:"(brief) reason for the condition's last transition"`
+	Message            string              `json:"message,omitempty" description:"human readable message indicating details about last transition"`
+}
+
 // NodeResources represents resources on a Kubernetes system node
 // see https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/resources.md for more details.
 type NodeResources struct {
@@ -480,6 +532,8 @@ type Minion struct {
 	HostIP string `json:"hostIP,omitempty" description:"IP address of the node"`
 	// Resources available on the node
 	NodeResources NodeResources `json:"resources,omitempty" description:"characterization of node resources"`
+	// Status describes the current status of a node
+	Status NodeStatus `json:"status,omitempty" description:"current status of node"`
 	// Labels for the node
 	Labels map[string]string `json:"labels,omitempty" description:"map of string keys and values that can be used to organize and categorize minions; labels of a minion assigned by the scheduler must match the scheduled pod's nodeSelector"`
 }
diff --git a/pkg/api/v1beta3/types.go b/pkg/api/v1beta3/types.go
index 63f6bd72319..b5c6e3020d0 100644
--- a/pkg/api/v1beta3/types.go
+++ b/pkg/api/v1beta3/types.go
@@ -678,6 +678,54 @@ type NodeSpec struct {
 type NodeStatus struct {
 	// Queried from cloud provider, if available.
 	HostIP string `json:"hostIP,omitempty"`
+	// NodePhase is the current lifecycle phase of the node.
+	Phase NodePhase `json:"phase,omitempty"`
+	// Conditions is an array of current node conditions.
+	Conditions []NodeCondition `json:"conditions,omitempty"`
+}
+
+type NodePhase string
+
+// These are the valid phases of node.
+const (
+	// NodePending means the node has been created/added by the system, but not configured.
+	NodePending NodePhase = "Pending"
+	// NodeRunning means the node has been configured and has Kubernetes components running.
+	NodeRunning NodePhase = "Running"
+	// NodeTerminated means the node has been removed from the cluster.
+	NodeTerminated NodePhase = "Terminated"
+)
+
+type NodeConditionKind string
+
+// These are valid conditions of node. Currently, we don't have enough information to decide
+// node condition. In the future, we will add more. The proposed set of conditions are:
+// NodeReachable, NodeLive, NodeReady, NodeSchedulable, NodeRunnable.
+const (
+	// NodeReachable means the node can be reached (in the sense of HTTP connection) from node controller.
+	NodeReachable NodeConditionKind = "Reachable"
+	// NodeReady means the node returns StatusOK for HTTP health check.
+	NodeReady NodeConditionKind = "Ready"
+)
+
+type NodeConditionStatus string
+
+// These are valid condition status. "ConditionFull" means node is in the condition;
+// "ConditionNone" means node is not in the condition; "ConditionUnknown" means kubernetes
+// can't decide if node is in the condition or not. In the future, we could add other
+// intermediate conditions, e.g. ConditionDegraded.
+const (
+	ConditionFull    NodeConditionStatus = "Full"
+	ConditionNone    NodeConditionStatus = "None"
+	ConditionUnknown NodeConditionStatus = "Unknown"
+)
+
+type NodeCondition struct {
+	Kind               NodeConditionKind   `json:"kind"`
+	Status             NodeConditionStatus `json:"status"`
+	LastTransitionTime util.Time           `json:"lastTransitionTime,omitempty"`
+	Reason             string              `json:"reason,omitempty"`
+	Message            string              `json:"message,omitempty"`
 }
 
 type ResourceName string