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types.go
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/*
Copyright 2014 Google Inc. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package v1beta3
import (
"github.com/GoogleCloudPlatform/kubernetes/pkg/api/resource"
"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
"github.com/GoogleCloudPlatform/kubernetes/pkg/types"
"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
)
// Common string formats
// ---------------------
// Many fields in this API have formatting requirements. The commonly used
// formats are defined here.
//
// C_IDENTIFIER: This is a string that conforms to the definition of an "identifier"
// in the C language. This is captured by the following regex:
// [A-Za-z_][A-Za-z0-9_]*
// This defines the format, but not the length restriction, which should be
// specified at the definition of any field of this type.
//
// DNS_LABEL: This is a string, no more than 63 characters long, that conforms
// to the definition of a "label" in RFCs 1035 and 1123. This is captured
// by the following regex:
// [a-z0-9]([-a-z0-9]*[a-z0-9])?
//
// DNS_SUBDOMAIN: This is a string, no more than 253 characters long, that conforms
// to the definition of a "subdomain" in RFCs 1035 and 1123. This is captured
// by the following regex:
// [a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*
// or more simply:
// DNS_LABEL(\.DNS_LABEL)*
// TypeMeta describes an individual object in an API response or request
// with strings representing the type of the object and its API schema version.
// Structures that are versioned or persisted should inline TypeMeta.
type TypeMeta struct {
// Kind is a string value representing the REST resource this object represents.
// Servers may infer this from the endpoint the client submits requests to.
Kind string `json:"kind,omitempty" description:"kind of object, in CamelCase; cannot be updated"`
// APIVersion defines the versioned schema of this representation of an object.
// Servers should convert recognized schemas to the latest internal value, and
// may reject unrecognized values.
APIVersion string `json:"apiVersion,omitempty" description:"version of the schema the object should have"`
}
// ListMeta describes metadata that synthetic resources must have, including lists and
// various status objects.
type ListMeta struct {
// SelfLink is a URL representing this object.
SelfLink string `json:"selfLink,omitempty" description:"URL for the object; populated by the system, read-only"`
// An opaque value that represents the version of this response for use with optimistic
// concurrency and change monitoring endpoints. Clients must treat these values as opaque
// and values may only be valid for a particular resource or set of resources. Only servers
// will generate resource versions.
ResourceVersion string `json:"resourceVersion,omitempty" description:"string that identifies the internal version of this object that can be used by clients to determine when objects have changed; populated by the system, read-only; value must be treated as opaque by clients and passed unmodified back to the server: https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#concurrency-control-and-consistency"`
}
// ObjectMeta is metadata that all persisted resources must have, which includes all objects
// users must create.
type ObjectMeta struct {
// Name is unique within a namespace. Name is required when creating resources, although
// some resources may allow a client to request the generation of an appropriate name
// automatically. Name is primarily intended for creation idempotence and configuration
// definition.
Name string `json:"name,omitempty" description:"string that identifies an object. Must be unique within a namespace; cannot be updated"`
// GenerateName indicates that the name should be made unique by the server prior to persisting
// it. A non-empty value for the field indicates the name will be made unique (and the name
// returned to the client will be different than the name passed). The value of this field will
// be combined with a unique suffix on the server if the Name field has not been provided.
// The provided value must be valid within the rules for Name, and may be truncated by the length
// of the suffix required to make the value unique on the server.
//
// If this field is specified, and Name is not present, the server will NOT return a 409 if the
// generated name exists - instead, it will either return 201 Created or 500 with Reason
// ServerTimeout indicating a unique name could not be found in the time allotted, and the client
// should retry (optionally after the time indicated in the Retry-After header).
GenerateName string `json:"generateName,omitempty" description:"an optional prefix to use to generate a unique name; has the same validation rules as name; optional, and is applied only name if is not specified"`
// Namespace defines the space within which name must be unique. An empty namespace is
// equivalent to the "default" namespace, but "default" is the canonical representation.
// Not all objects are required to be scoped to a namespace - the value of this field for
// those objects will be empty.
Namespace string `json:"namespace,omitempty" description:"namespace of the object; cannot be updated"`
// SelfLink is a URL representing this object.
SelfLink string `json:"selfLink,omitempty" description:"URL for the object; populated by the system, read-only"`
// UID is the unique in time and space value for this object. It is typically generated by
// the server on successful creation of a resource and is not allowed to change on PUT
// operations.
UID types.UID `json:"uid,omitempty" description:"unique UUID across space and time; populated by the system; read-only"`
// An opaque value that represents the version of this resource. May be used for optimistic
// concurrency, change detection, and the watch operation on a resource or set of resources.
// Clients must treat these values as opaque and values may only be valid for a particular
// resource or set of resources. Only servers will generate resource versions.
ResourceVersion string `json:"resourceVersion,omitempty" description:"string that identifies the internal version of this object that can be used by clients to determine when objects have changed; populated by the system, read-only; value must be treated as opaque by clients and passed unmodified back to the server: https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#concurrency-control-and-consistency"`
// CreationTimestamp is a timestamp representing the server time when this object was
// created. It is not guaranteed to be set in happens-before order across separate operations.
// Clients may not set this value. It is represented in RFC3339 form and is in UTC.
CreationTimestamp util.Time `json:"creationTimestamp,omitempty" description:"RFC 3339 date and time at which the object was created; populated by the system, read-only; null for lists"`
// DeletionTimestamp is the time after which this resource will be deleted. This
// field is set by the server when a graceful deletion is requested by the user, and is not
// directly settable by a client. The resource will be deleted (no longer visible from
// resource lists, and not reachable by name) after the time in this field. Once set, this
// value may not be unset or be set further into the future, although it may be shortened
// or the resource may be deleted prior to this time. For example, a user may request that
// a pod is deleted in 30 seconds. The Kubelet will react by sending a graceful termination
// signal to the containers in the pod. Once the resource is deleted in the API, the Kubelet
// will send a hard termination signal to the container.
DeletionTimestamp *util.Time `json:"deletionTimestamp,omitempty" description:"RFC 3339 date and time at which the object will be deleted; populated by the system when a graceful deletion is requested, read-only; if not set, graceful deletion of the object has not been requested"`
// Labels are key value pairs that may be used to scope and select individual resources.
// TODO: replace map[string]string with labels.LabelSet type
Labels map[string]string `json:"labels,omitempty" description:"map of string keys and values that can be used to organize and categorize objects; may match selectors of replication controllers and services"`
// Annotations are unstructured key value data stored with a resource that may be set by
// external tooling. They are not queryable and should be preserved when modifying
// objects.
Annotations map[string]string `json:"annotations,omitempty" description:"map of string keys and values that can be used by external tooling to store and retrieve arbitrary metadata about objects"`
}
const (
// NamespaceDefault means the object is in the default namespace which is applied when not specified by clients
NamespaceDefault string = "default"
// NamespaceAll is the default argument to specify on a context when you want to list or filter resources across all namespaces
NamespaceAll string = ""
)
//
//// ContainerManifest corresponds to the Container Manifest format, documented at:
//// https://developers.google.com/compute/docs/containers/container_vms#container_manifest
//// This is used as the representation of Kubernetes workloads.
//// DEPRECATED: Exists to allow backwards compatible storage for clients accessing etcd
//// directly.
//type ContainerManifest struct {
// // Required: This must be a supported version string, such as "v1beta1".
// Version string `json:"version"`
// // Required: This must be a DNS_SUBDOMAIN.
// // TODO: ID on Manifest is deprecated and will be removed in the future.
// ID string `json:"id"`
// // TODO: UUID on Manifest is deprecated in the future once we are done
// // with the API refactoring. It is required for now to determine the instance
// // of a Pod.
// UUID types.UID `json:"uuid,omitempty"`
// Volumes []Volume `json:"volumes"`
// Containers []Container `json:"containers"`
// RestartPolicy RestartPolicy `json:"restartPolicy,omitempty"`
//}
//
//// ContainerManifestList is used to communicate container manifests to kubelet.
//// DEPRECATED: Exists to allow backwards compatible storage for clients accessing etcd
//// directly.
//type ContainerManifestList struct {
// TypeMeta `json:",inline"`
// // ID is the legacy field representing Name
// ID string `json:"id,omitempty"`
//
// Items []ContainerManifest `json:"items,omitempty"`
//}
// Volume represents a named volume in a pod that may be accessed by any containers in the pod.
type Volume struct {
// Required: This must be a DNS_LABEL. Each volume in a pod must have
// a unique name.
Name string `json:"name" description:"volume name; must be a DNS_LABEL and unique within the pod"`
// Source represents the location and type of a volume to mount.
// This is optional for now. If not specified, the Volume is implied to be an EmptyDir.
// This implied behavior is deprecated and will be removed in a future version.
VolumeSource `json:",inline,omitempty"`
}
// VolumeSource represents the source location of a volume to mount.
// Only one of its members may be specified.
type VolumeSource struct {
// HostPath represents a pre-existing file or directory on the host
// machine that is directly exposed to the container. This is generally
// used for system agents or other privileged things that are allowed
// to see the host machine. Most containers will NOT need this.
// TODO(jonesdl) We need to restrict who can use host directory mounts and who can/can not
// mount host directories as read/write.
HostPath *HostPathVolumeSource `json:"hostPath" description:"pre-existing host file or directory; generally for privileged system daemons or other agents tied to the host"`
// EmptyDir represents a temporary directory that shares a pod's lifetime.
EmptyDir *EmptyDirVolumeSource `json:"emptyDir" description:"temporary directory that shares a pod's lifetime"`
// GCEPersistentDisk represents a GCE Disk resource that is attached to a
// kubelet's host machine and then exposed to the pod.
GCEPersistentDisk *GCEPersistentDiskVolumeSource `json:"gcePersistentDisk" description:"GCE disk resource attached to the host machine on demand"`
// GitRepo represents a git repository at a particular revision.
GitRepo *GitRepoVolumeSource `json:"gitRepo" description:"git repository at a particular revision"`
// Secret represents a secret that should populate this volume.
Secret *SecretVolumeSource `json:"secret" description:"secret to populate volume"`
// NFS represents an NFS mount on the host that shares a pod's lifetime
NFS *NFSVolumeSource `json:"nfs" description:"NFS volume that will be mounted in the host machine"`
}
// Similar to VolumeSource but meant for the administrator who creates PVs.
// Exactly one of its members must be set.
type PersistentVolumeSource struct {
// GCEPersistentDisk represents a GCE Disk resource that is attached to a
// kubelet's host machine and then exposed to the pod.
GCEPersistentDisk *GCEPersistentDiskVolumeSource `json:"gcePersistentDisk" description:"GCE disk resource provisioned by an admin"`
// HostPath represents a directory on the host.
// This is useful for development and testing only.
// on-host storage is not supported in any way.
HostPath *HostPathVolumeSource `json:"hostPath" description:"a HostPath provisioned by a developer or tester; for develment use only"`
}
type PersistentVolume struct {
TypeMeta `json:",inline"`
ObjectMeta `json:"metadata,omitempty"`
//Spec defines a persistent volume owned by the cluster
Spec PersistentVolumeSpec `json:"spec,omitempty" description:"specification of a persistent volume as provisioned by an administrator"`
// Status represents the current information about persistent volume.
Status PersistentVolumeStatus `json:"status,omitempty" description:"current status of a persistent volume; populated by the system, read-only"`
}
type PersistentVolumeSpec struct {
// Resources represents the actual resources of the volume
Capacity ResourceList `json:"capacity,omitempty" description:"a description of the persistent volume's resources and capacity"`
// Source represents the location and type of a volume to mount.
// AccessModeTypes are inferred from the Source.
PersistentVolumeSource `json:",inline" description:"the actual volume backing the persistent volume"`
// holds the binding reference to a PersistentVolumeClaim
ClaimRef *ObjectReference `json:"claimRef,omitempty" description:"the binding reference to a persistent volume claim"`
}
type PersistentVolumeStatus struct {
// Phase indicates if a volume is available, bound to a claim, or released by a claim
Phase PersistentVolumePhase `json:"phase,omitempty" description:"the current phase of a persistent volume"`
}
type PersistentVolumeList struct {
TypeMeta `json:",inline"`
ListMeta `json:"metadata,omitempty"`
Items []PersistentVolume `json:"items,omitempty" description:"list of persistent volumes"`
}
// PersistentVolumeClaim is a user's request for and claim to a persistent volume
type PersistentVolumeClaim struct {
TypeMeta `json:",inline"`
ObjectMeta `json:"metadata,omitempty"`
// Spec defines the volume requested by a pod author
Spec PersistentVolumeClaimSpec `json:"spec,omitempty" description: "the desired characteristics of a volume"`
// Status represents the current information about a claim
Status PersistentVolumeClaimStatus `json:"status,omitempty" description:"the current status of a persistent volume claim; read-only"`
}
type PersistentVolumeClaimList struct {
TypeMeta `json:",inline"`
ListMeta `json:"metadata,omitempty"`
Items []PersistentVolumeClaim `json:"items,omitempty" description: "a list of persistent volume claims"`
}
// PersistentVolumeClaimSpec describes the common attributes of storage devices
// and allows a Source for provider-specific attributes
type PersistentVolumeClaimSpec struct {
// Contains the types of access modes required
AccessModes []AccessModeType `json:"accessModes,omitempty" description:"the desired access modes the volume should have"`
// Resources represents the minimum resources required
Resources ResourceRequirements `json:"resources,omitempty" description:"the desired resources the volume should have"`
}
type PersistentVolumeClaimStatus struct {
// Phase represents the current phase of PersistentVolumeClaim
Phase PersistentVolumeClaimPhase `json:"phase,omitempty" description:"the current phase of the claim"`
// AccessModes contains all ways the volume backing the PVC can be mounted
AccessModes []AccessModeType `json:"accessModes,omitempty" description:"the actual access modes the volume has"`
// Represents the actual resources of the underlying volume
Capacity ResourceList `json:"capacity,omitempty" description:"the actual resources the volume has"`
// VolumeRef is a reference to the PersistentVolume bound to the PersistentVolumeClaim
VolumeRef *ObjectReference `json:"volumeRef,omitempty" description:"a reference to the backing persistent volume, when bound"`
}
type AccessModeType string
const (
// can be mounted read/write mode to exactly 1 host
ReadWriteOnce AccessModeType = "ReadWriteOnce"
// can be mounted in read-only mode to many hosts
ReadOnlyMany AccessModeType = "ReadOnlyMany"
// can be mounted in read/write mode to many hosts
ReadWriteMany AccessModeType = "ReadWriteMany"
)
type PersistentVolumePhase string
const (
// used for PersistentVolumes that are not yet bound
VolumeAvailable PersistentVolumePhase = "Available"
// used for PersistentVolumes that are bound
VolumeBound PersistentVolumePhase = "Bound"
// used for PersistentVolumes where the bound PersistentVolumeClaim was deleted
// released volumes must be recycled before becoming available again
VolumeReleased PersistentVolumePhase = "Released"
)
type PersistentVolumeClaimPhase string
const (
// used for PersistentVolumeClaims that are not yet bound
ClaimPending PersistentVolumeClaimPhase = "Pending"
// used for PersistentVolumeClaims that are bound
ClaimBound PersistentVolumeClaimPhase = "Bound"
)
// HostPathVolumeSource represents bare host directory volume.
type HostPathVolumeSource struct {
Path string `json:"path" description:"path of the directory on the host"`
}
type EmptyDirVolumeSource struct {
// Optional: what type of storage medium should back this directory.
// The default is "" which means to use the node's default medium.
Medium StorageType `json:"medium" description:"type of storage used to back the volume; must be an empty string (default) or Memory"`
}
// StorageType defines ways that storage can be allocated to a volume.
type StorageType string
const (
StorageTypeDefault StorageType = "" // use whatever the default is for the node
StorageTypeMemory StorageType = "Memory" // use memory (tmpfs)
)
// Protocol defines network protocols supported for things like conatiner ports.
type Protocol string
const (
// ProtocolTCP is the TCP protocol.
ProtocolTCP Protocol = "TCP"
// ProtocolUDP is the UDP protocol.
ProtocolUDP Protocol = "UDP"
)
// GCEPersistentDiskVolumeSource represents a Persistent Disk resource in Google Compute Engine.
//
// A GCE PD must exist and be formatted before mounting to a container.
// The disk must also be in the same GCE project and zone as the kubelet.
// A GCE PD can only be mounted as read/write once.
type GCEPersistentDiskVolumeSource struct {
// Unique name of the PD resource. Used to identify the disk in GCE
PDName string `json:"pdName" description:"unique name of the PD resource in GCE"`
// Required: Filesystem type to mount.
// Must be a filesystem type supported by the host operating system.
// Ex. "ext4", "xfs", "ntfs"
// TODO: how do we prevent errors in the filesystem from compromising the machine
FSType string `json:"fsType,omitempty" description:"file system type to mount, such as ext4, xfs, ntfs"`
// Optional: Partition on the disk to mount.
// If omitted, kubelet will attempt to mount the device name.
// Ex. For /dev/sda1, this field is "1", for /dev/sda, this field is 0 or empty.
Partition int `json:"partition,omitempty" description:"partition on the disk to mount (e.g., '1' for /dev/sda1); if omitted the plain device name (e.g., /dev/sda) will be mounted"`
// Optional: Defaults to false (read/write). ReadOnly here will force
// the ReadOnly setting in VolumeMounts.
ReadOnly bool `json:"readOnly,omitempty" description:"read-only if true, read-write otherwise (false or unspecified)"`
}
// GitRepoVolumeSource represents a volume that is pulled from git when the pod is created.
type GitRepoVolumeSource struct {
// Repository URL
Repository string `json:"repository" description:"repository URL"`
// Commit hash, this is optional
Revision string `json:"revision" description:"commit hash for the specified revision"`
}
// SecretVolumeSource adapts a Secret into a VolumeSource
//
// https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/design/secrets.md
type SecretVolumeSource struct {
// Name of the secret in the pod's namespace to use
SecretName string `json:"secretName" description:"secretName is the name of a secret in the pod's namespace"`
}
// NFSVolumeSource represents an NFS mount that lasts the lifetime of a pod
type NFSVolumeSource struct {
// Server is the hostname or IP address of the NFS server
Server string `json:"server" description:"the hostname or IP address of the NFS server"`
// Path is the exported NFS share
Path string `json:"path" description:"the path that is exported by the NFS server"`
// Optional: Defaults to false (read/write). ReadOnly here will force
// the NFS export to be mounted with read-only permissions
ReadOnly bool `json:"readOnly,omitempty" description:"forces the NFS export to be mounted with read-only permissions"`
}
// ContainerPort represents a network port in a single container.
type ContainerPort struct {
// Optional: If specified, this must be a DNS_LABEL. Each named port
// in a pod must have a unique name.
Name string `json:"name,omitempty" description:"name for the port that can be referred to by services; must be a DNS_LABEL and unique without the pod"`
// Optional: If specified, this must be a valid port number, 0 < x < 65536.
// If HostNetwork is specified, this must match ContainerPort.
HostPort int `json:"hostPort,omitempty" description:"number of port to expose on the host; most containers do not need this"`
// Required: This must be a valid port number, 0 < x < 65536.
ContainerPort int `json:"containerPort" description:"number of port to expose on the pod's IP address"`
// Optional: Defaults to "TCP".
Protocol Protocol `json:"protocol,omitempty" description:"protocol for port; must be UDP or TCP; TCP if unspecified"`
// Optional: What host IP to bind the external port to.
HostIP string `json:"hostIP,omitempty" description:"host IP to bind the port to"`
}
// VolumeMount describes a mounting of a Volume within a container.
type VolumeMount struct {
// Required: This must match the Name of a Volume [above].
Name string `json:"name" description:"name of the volume to mount"`
// Optional: Defaults to false (read-write).
ReadOnly bool `json:"readOnly,omitempty" description:"mounted read-only if true, read-write otherwise (false or unspecified)"`
// Required.
MountPath string `json:"mountPath" description:"path within the container at which the volume should be mounted"`
}
// EnvVar represents an environment variable present in a Container.
type EnvVar struct {
// Required: This must be a C_IDENTIFIER.
Name string `json:"name" description:"name of the environment variable; must be a C_IDENTIFIER"`
// Optional: defaults to "".
Value string `json:"value,omitempty" description:"value of the environment variable; defaults to empty string"`
}
// HTTPGetAction describes an action based on HTTP Get requests.
type HTTPGetAction struct {
// Optional: Path to access on the HTTP server.
Path string `json:"path,omitempty" description:"path to access on the HTTP server"`
// Required: Name or number of the port to access on the container.
Port util.IntOrString `json:"port,omitempty" description:"number or name of the port to access on the container"`
// Optional: Host name to connect to, defaults to the pod IP.
Host string `json:"host,omitempty" description:"hostname to connect to; defaults to pod IP"`
}
// TCPSocketAction describes an action based on opening a socket
type TCPSocketAction struct {
// Required: Port to connect to.
Port util.IntOrString `json:"port,omitempty" description:"number of name of the port to access on the container"`
}
// ExecAction describes a "run in container" action.
type ExecAction struct {
// Command is the command line to execute inside the container, the working directory for the
// command is root ('/') in the container's filesystem. The command is simply exec'd, it is
// not run inside a shell, so traditional shell instructions ('|', etc) won't work. To use
// a shell, you need to explicitly call out to that shell.
Command []string `json:"command,omitempty" description:"command line to execute inside the container; working directory for the command is root ('/') in the container's file system; the command is exec'd, not run inside a shell; exit status of 0 is treated as live/healthy and non-zero is unhealthy"`
}
// Probe describes a liveness probe to be examined to the container.
type Probe struct {
// The action taken to determine the health of a container
Handler `json:",inline"`
// Length of time before health checking is activated. In seconds.
InitialDelaySeconds int64 `json:"initialDelaySeconds,omitempty" description:"number of seconds after the container has started before liveness probes are initiated"`
// Length of time before health checking times out. In seconds.
TimeoutSeconds int64 `json:"timeoutSeconds,omitempty" description:"number of seconds after which liveness probes timeout; defaults to 1 second"`
}
// PullPolicy describes a policy for if/when to pull a container image
type PullPolicy string
const (
// PullAlways means that kubelet always attempts to pull the latest image. Container will fail If the pull fails.
PullAlways PullPolicy = "Always"
// PullNever means that kubelet never pulls an image, but only uses a local image. Container will fail if the image isn't present
PullNever PullPolicy = "Never"
// PullIfNotPresent means that kubelet pulls if the image isn't present on disk. Container will fail if the image isn't present and the pull fails.
PullIfNotPresent PullPolicy = "IfNotPresent"
)
// CapabilityType represent POSIX capabilities type
type CapabilityType string
// Capabilities represent POSIX capabilities that can be added or removed to a running container.
type Capabilities struct {
// Added capabilities
Add []CapabilityType `json:"add,omitempty" description:"added capabilities"`
// Removed capabilities
Drop []CapabilityType `json:"drop,omitempty" description:"droped capabilities"`
}
// ResourceRequirements describes the compute resource requirements.
type ResourceRequirements struct {
// Limits describes the maximum amount of compute resources required.
Limits ResourceList `json:"limits,omitempty" description:"Maximum amount of compute resources allowed"`
// Requests describes the minimum amount of compute resources required.
Requests ResourceList `json:"requests,omitempty" description:"Minimum amount of resources requested"`
}
const (
// TerminationMessagePathDefault means the default path to capture the application termination message running in a container
TerminationMessagePathDefault string = "/dev/termination-log"
)
// Container represents a single container that is expected to be run on the host.
type Container struct {
// Required: This must be a DNS_LABEL. Each container in a pod must
// have a unique name.
Name string `json:"name" description:"name of the container; must be a DNS_LABEL and unique within the pod; cannot be updated"`
// Required.
Image string `json:"image" description:"Docker image name"`
// Optional: Defaults to whatever is defined in the image.
Command []string `json:"command,omitempty" description:"command argv array; not executed within a shell; defaults to entrypoint or command in the image; cannot be updated"`
// Optional: Defaults to Docker's default.
WorkingDir string `json:"workingDir,omitempty" description:"container's working directory; defaults to image's default; cannot be updated"`
Ports []ContainerPort `json:"ports,omitempty" description:"list of ports to expose from the container; cannot be updated"`
Env []EnvVar `json:"env,omitempty" description:"list of environment variables to set in the container; cannot be updated"`
Resources ResourceRequirements `json:"resources,omitempty" description:"Compute Resources required by this container; cannot be updated"`
VolumeMounts []VolumeMount `json:"volumeMounts,omitempty" description:"pod volumes to mount into the container's filesyste; cannot be updated"`
LivenessProbe *Probe `json:"livenessProbe,omitempty" description:"periodic probe of container liveness; container will be restarted if the probe fails; cannot be updated"`
ReadinessProbe *Probe `json:"readinessProbe,omitempty" description:"periodic probe of container service readiness; container will be removed from service endpoints if the probe fails; cannot be updated"`
Lifecycle *Lifecycle `json:"lifecycle,omitempty" description:"actions that the management system should take in response to container lifecycle events; cannot be updated"`
// Optional: Defaults to /dev/termination-log
TerminationMessagePath string `json:"terminationMessagePath,omitempty" description:"path at which the file to which the container's termination message will be written is mounted into the container's filesystem; message written is intended to be brief final status, such as an assertion failure message; defaults to /dev/termination-log; cannot be updated"`
// Optional: Default to false.
Privileged bool `json:"privileged,omitempty" description:"whether or not the container is granted privileged status; defaults to false; cannot be updated"`
// Optional: Policy for pulling images for this container
ImagePullPolicy PullPolicy `json:"imagePullPolicy" description:"image pull policy; one of PullAlways, PullNever, PullIfNotPresent; defaults to PullAlways if :latest tag is specified, or PullIfNotPresent otherwise; cannot be updated"`
// Optional: Capabilities for container.
Capabilities Capabilities `json:"capabilities,omitempty" description:"capabilities for container; cannot be updated"`
}
// Handler defines a specific action that should be taken
// TODO: pass structured data to these actions, and document that data here.
type Handler struct {
// One and only one of the following should be specified.
// Exec specifies the action to take.
Exec *ExecAction `json:"exec,omitempty" description:"exec-based handler"`
// HTTPGet specifies the http request to perform.
HTTPGet *HTTPGetAction `json:"httpGet,omitempty" description:"HTTP-based handler"`
// TCPSocket specifies an action involving a TCP port.
// TODO: implement a realistic TCP lifecycle hook
TCPSocket *TCPSocketAction `json:"tcpSocket,omitempty" description:"TCP-based handler; TCP hooks not yet supported"`
}
// Lifecycle describes actions that the management system should take in response to container lifecycle
// events. For the PostStart and PreStop lifecycle handlers, management of the container blocks
// until the action is complete, unless the container process fails, in which case the handler is aborted.
type Lifecycle struct {
// PostStart is called immediately after a container is created. If the handler fails, the container
// is terminated and restarted.
PostStart *Handler `json:"postStart,omitempty" description:"called immediately after a container is started; if the handler fails, the container is terminated and restarted according to its restart policy; other management of the container blocks until the hook completes"`
// PreStop is called immediately before a container is terminated. The reason for termination is
// passed to the handler. Regardless of the outcome of the handler, the container is eventually terminated.
PreStop *Handler `json:"preStop,omitempty" description:"called before a container is terminated; the container is terminated after the handler completes; other management of the container blocks until the hook completes"`
}
type ConditionStatus string
// These are valid condition statuses. "ConditionTrue" means a resource is in the condition;
// "ConditionFalse" means a resource is not in the condition; "ConditionUnknown" means kubernetes
// can't decide if a resource is in the condition or not. In the future, we could add other
// intermediate conditions, e.g. ConditionDegraded.
const (
ConditionTrue ConditionStatus = "True"
ConditionFalse ConditionStatus = "False"
ConditionUnknown ConditionStatus = "Unknown"
)
type ContainerStateWaiting struct {
// Reason could be pulling image,
Reason string `json:"reason,omitempty" description:"(brief) reason the container is not yet running, such as pulling its image"`
}
type ContainerStateRunning struct {
StartedAt util.Time `json:"startedAt,omitempty" description:"time at which the container was last (re-)started"`
}
type ContainerStateTerminated struct {
ExitCode int `json:"exitCode" description:"exit status from the last termination of the container"`
Signal int `json:"signal,omitempty" description:"signal from the last termination of the container"`
Reason string `json:"reason,omitempty" description:"(brief) reason from the last termination of the container"`
Message string `json:"message,omitempty" description:"message regarding the last termination of the container"`
StartedAt util.Time `json:"startedAt,omitempty" description:"time at which previous execution of the container started"`
FinishedAt util.Time `json:"finishedAt,omitempty" description:"time at which the container last terminated"`
ContainerID string `json:"containerID,omitempty" description:"container's ID in the format 'docker://<container_id>'"`
}
// ContainerState holds a possible state of container.
// Only one of its members may be specified.
// If none of them is specified, the default one is ContainerStateWaiting.
type ContainerState struct {
Waiting *ContainerStateWaiting `json:"waiting,omitempty" description:"details about a waiting container"`
Running *ContainerStateRunning `json:"running,omitempty" description:"details about a running container"`
Termination *ContainerStateTerminated `json:"termination,omitempty" description:"details about a terminated container"`
}
type ContainerStatus struct {
// Required: This must be a DNS_LABEL. Each container in a pod must have a unique name.
Name string `json:"name" description:"name of the container; must be a DNS_LABEL and unique within the pod; cannot be updated"`
// TODO(dchen1107): Should we rename PodStatus to a more generic name or have a separate states
// defined for container?
State ContainerState `json:"state,omitempty" description:"details about the container's current condition"`
LastTerminationState ContainerState `json:"lastState,omitempty" description:"details about the container's last termination condition"`
Ready bool `json:"ready" description:"specifies whether the container has passed its readiness probe"`
// Note that this is calculated from dead containers. But those containers are subject to
// garbage collection. This value will get capped at 5 by GC.
RestartCount int `json:"restartCount" description:"the number of times the container has been restarted, currently based on the number of dead containers that have not yet been removed"`
// TODO(dchen1107): Which image the container is running with?
// The image the container is running
Image string `json:"image" description:"image of the container"`
ImageID string `json:"imageID" description:"ID of the container's image"`
ContainerID string `json:"containerID,omitempty" description:"container's ID in the format 'docker://<container_id>'"`
}
// PodPhase is a label for the condition of a pod at the current time.
type PodPhase string
// These are the valid statuses of pods.
const (
// PodPending means the pod has been accepted by the system, but one or more of the containers
// has not been started. This includes time before being bound to a node, as well as time spent
// pulling images onto the host.
PodPending PodPhase = "Pending"
// PodRunning means the pod has been bound to a node and all of the containers have been started.
// At least one container is still running or is in the process of being restarted.
PodRunning PodPhase = "Running"
// PodSucceeded means that all containers in the pod have voluntarily terminated
// with a container exit code of 0, and the system is not going to restart any of these containers.
PodSucceeded PodPhase = "Succeeded"
// PodFailed means that all containers in the pod have terminated, and at least one container has
// terminated in a failure (exited with a non-zero exit code or was stopped by the system).
PodFailed PodPhase = "Failed"
// PodUnknown means that for some reason the state of the pod could not be obtained, typically due
// to an error in communicating with the host of the pod.
PodUnknown PodPhase = "Unknown"
)
// PodConditionType is a valid value for PodCondition.Type
type PodConditionType string
// These are valid conditions of pod.
const (
// PodReady means the pod is able to service requests and should be added to the
// load balancing pools of all matching services.
PodReady PodConditionType = "Ready"
)
// TODO: add LastTransitionTime, Reason, Message to match NodeCondition api.
type PodCondition struct {
// Type is the type of the condition
Type PodConditionType `json:"type" description:"kind of the condition"`
// Status is the status of the condition
Status ConditionStatus `json:"status" description:"status of the condition, one of Full, None, Unknown"`
}
// RestartPolicy describes how the container should be restarted.
// Only one of the following restart policies may be specified.
// If none of the following policies is specified, the default one
// is RestartPolicyAlways.
type RestartPolicy string
const (
RestartPolicyAlways RestartPolicy = "Always"
RestartPolicyOnFailure RestartPolicy = "OnFailure"
RestartPolicyNever RestartPolicy = "Never"
)
// DNSPolicy defines how a pod's DNS will be configured.
type DNSPolicy string
const (
// DNSClusterFirst indicates that the pod should use cluster DNS
// first, if it is available, then fall back on the default (as
// determined by kubelet) DNS settings.
DNSClusterFirst DNSPolicy = "ClusterFirst"
// DNSDefault indicates that the pod should use the default (as
// determined by kubelet) DNS settings.
DNSDefault DNSPolicy = "Default"
)
// PodSpec is a description of a pod
type PodSpec struct {
Volumes []Volume `json:"volumes" description:"list of volumes that can be mounted by containers belonging to the pod"`
// Required: there must be at least one container in a pod.
Containers []Container `json:"containers" description:"list of containers belonging to the pod; cannot be updated; containers cannot currently be added or removed; there must be at least one container in a Pod"`
RestartPolicy RestartPolicy `json:"restartPolicy,omitempty" description:"restart policy for all containers within the pod; one of RestartPolicyAlways, RestartPolicyOnFailure, RestartPolicyNever"`
// Optional: Set DNS policy. Defaults to "ClusterFirst"
DNSPolicy DNSPolicy `json:"dnsPolicy,omitempty" description:"DNS policy for containers within the pod; one of 'ClusterFirst' or 'Default'"`
// NodeSelector is a selector which must be true for the pod to fit on a node
NodeSelector map[string]string `json:"nodeSelector,omitempty" description:"selector which must match a node's labels for the pod to be scheduled on that node"`
// Host is a request to schedule this pod onto a specific host. If it is non-empty,
// the the scheduler simply schedules this pod onto that host, assuming that it fits
// resource requirements.
Host string `json:"host,omitempty" description:"host requested for this pod"`
// Uses the host's network namespace. If this option is set, the ports that will be
// used must be specified.
// Optional: Default to false.
HostNetwork bool `json:"hostNetwork,omitempty" description:"host networking requested for this pod"`
}
// PodStatus represents information about the status of a pod. Status may trail the actual
// state of a system.
type PodStatus struct {
Phase PodPhase `json:"phase,omitempty" description:"current condition of the pod."`
Conditions []PodCondition `json:"Condition,omitempty" description:"current service state of pod"`
// A human readable message indicating details about why the pod is in this state.
Message string `json:"message,omitempty" description:"human readable message indicating details about why the pod is in this condition"`
// Host is the name of the node that this Pod is currently bound to, or empty if no
// assignment has been done.
Host string `json:"host,omitempty" description:"host to which the pod is assigned; empty if not yet scheduled; cannot be updated"`
HostIP string `json:"hostIP,omitempty" description:"IP address of the host to which the pod is assigned; empty if not yet scheduled"`
PodIP string `json:"podIP,omitempty" description:"IP address allocated to the pod; routable at least within the cluster; empty if not yet allocated"`
// The list has one entry per container in the manifest. Each entry is currently the output
// of `docker inspect`. This output format is *not* final and should not be relied
// upon.
// TODO: Make real decisions about what our info should look like. Re-enable fuzz test
// when we have done this.
ContainerStatuses []ContainerStatus `json:"containerStatuses,omitempty" description:"list of container statuses"`
}
// PodStatusResult is a wrapper for PodStatus returned by kubelet that can be encode/decoded
type PodStatusResult struct {
TypeMeta `json:",inline"`
ObjectMeta `json:"metadata,omitempty" description:"standard object metadata; see https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#metadata"`
// Status represents the current information about a pod. This data may not be up
// to date.
Status PodStatus `json:"status,omitempty" description:"most recently observed status of the pod; populated by the system, read-only; https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#spec-and-status"`
}
// Pod is a collection of containers that can run on a host. This resource is created
// by clients and scheduled onto hosts.
type Pod struct {
TypeMeta `json:",inline"`
ObjectMeta `json:"metadata,omitempty" description:"standard object metadata; see https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#metadata"`
// Spec defines the behavior of a pod.
Spec PodSpec `json:"spec,omitempty" description:"specification of the desired behavior of the pod; https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#spec-and-status"`
// Status represents the current information about a pod. This data may not be up
// to date.
Status PodStatus `json:"status,omitempty" description:"most recently observed status of the pod; populated by the system, read-only; https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#spec-and-status"`
}
// PodList is a list of Pods.
type PodList struct {
TypeMeta `json:",inline"`
ListMeta `json:"metadata,omitempty" description:"standard list metadata; see https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#types-kinds`
Items []Pod `json:"items" description:"list of pods"`
}
// PodTemplateSpec describes the data a pod should have when created from a template
type PodTemplateSpec struct {
// Metadata of the pods created from this template.
ObjectMeta `json:"metadata,omitempty" description:"standard object metadata; see https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#metadata"`
// Spec defines the behavior of a pod.
Spec PodSpec `json:"spec,omitempty" description:"specification of the desired behavior of the pod; https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#spec-and-status"`
}
// PodTemplate describes a template for creating copies of a predefined pod.
type PodTemplate struct {
TypeMeta `json:",inline"`
ObjectMeta `json:"metadata,omitempty" description:"standard object metadata; see https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#metadata"`
// Spec defines the behavior of a pod.
Spec PodTemplateSpec `json:"spec,omitempty" description:"specification of the desired behavior of the pod; https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#spec-and-status"`
}
// PodTemplateList is a list of PodTemplates.
type PodTemplateList struct {
TypeMeta `json:",inline"`
ListMeta `json:"metadata,omitempty" description:"standard list metadata; see https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#metadata"`
Items []PodTemplate `json:"items" description:"list of pod templates"`
}
// ReplicationControllerSpec is the specification of a replication controller.
type ReplicationControllerSpec struct {
// Replicas is the number of desired replicas.
Replicas int `json:"replicas" description:"number of replicas desired"`
// Selector is a label query over pods that should match the Replicas count.
Selector map[string]string `json:"selector,omitempty" description:"label keys and values that must match in order to be controlled by this replication controller"`
// TemplateRef is a reference to an object that describes the pod that will be created if
// insufficient replicas are detected.
TemplateRef *ObjectReference `json:"templateRef,omitempty" description:"reference to an object that describes the pod that will be created if insufficient replicas are detected"`
// Template is the object that describes the pod that will be created if
// insufficient replicas are detected. This takes precedence over a
// TemplateRef.
Template *PodTemplateSpec `json:"template,omitempty" description:"object that describes the pod that will be created if insufficient replicas are detected; takes precendence over templateRef"`
}
// ReplicationControllerStatus represents the current status of a replication
// controller.
type ReplicationControllerStatus struct {
// Replicas is the number of actual replicas.
Replicas int `json:"replicas" description:"most recently oberved number of replicas"`
}
// ReplicationController represents the configuration of a replication controller.
type ReplicationController struct {
TypeMeta `json:",inline"`
ObjectMeta `json:"metadata,omitempty" description:"standard object metadata; see https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#metadata"`
// Spec defines the desired behavior of this replication controller.
Spec ReplicationControllerSpec `json:"spec,omitempty" description:"specification of the desired behavior of the replication controller; https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#spec-and-status"`
// Status is the current status of this replication controller. This data may be
// out of date by some window of time.
Status ReplicationControllerStatus `json:"status,omitempty" description:"most recently observed status of the replication controller; populated by the system, read-only; https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#spec-and-status"`
}
// ReplicationControllerList is a collection of replication controllers.
type ReplicationControllerList struct {
TypeMeta `json:",inline"`
ListMeta `json:"metadata,omitempty" description:"standard list metadata; see https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#metadata"`
Items []ReplicationController `json:"items" description:"list of replication controllers"`
}
// Session Affinity Type string
type AffinityType string
const (
// AffinityTypeClientIP is the Client IP based.
AffinityTypeClientIP AffinityType = "ClientIP"
// AffinityTypeNone - no session affinity.
AffinityTypeNone AffinityType = "None"
)
// ServiceStatus represents the current status of a service
type ServiceStatus struct{}
// ServiceSpec describes the attributes that a user creates on a service
type ServiceSpec struct {
// Port is the TCP or UDP port that will be made available to each pod for connecting to the pods
// proxied by this service.
Port int `json:"port" description:"port exposed by the service"`
// Optional: Supports "TCP" and "UDP". Defaults to "TCP".
Protocol Protocol `json:"protocol,omitempty" description:"protocol for port; must be UDP or TCP; TCP if unspecified"`
// This service will route traffic to pods having labels matching this selector. If null, no endpoints will be automatically created. If empty, all pods will be selected.
Selector map[string]string `json:"selector" description:"label keys and values that must match in order to receive traffic for this service; if empty, all pods are selected, if not specified, endpoints must be manually specified"`
// PortalIP is usually assigned by the master. If specified by the user
// we will try to respect it or else fail the request. This field can
// not be changed by updates.
// Valid values are None, empty string (""), or a valid IP address
// None can be specified for headless services when proxying is not required
PortalIP string `json:"portalIP,omitempty description: IP address of the service; usually assigned by the system; if specified, it will be allocated to the service if unused, and creation of the service will fail otherwise; cannot be updated; 'None' can be specified for a headless service when proxying is not required"`
// CreateExternalLoadBalancer indicates whether a load balancer should be created for this service.
CreateExternalLoadBalancer bool `json:"createExternalLoadBalancer,omitempty" description:"set up a cloud-provider-specific load balancer on an external IP"`
// PublicIPs are used by external load balancers, or can be set by
// users to handle external traffic that arrives at a node.
PublicIPs []string `json:"publicIPs,omitempty" description:"externally visible IPs (e.g. load balancers) that should be proxied to this service"`
// TargetPort is the name or number of the port on the container to direct traffic to.
// This is useful if the containers the service points to have multiple open ports.
// Optional: If unspecified, the service port is used (an identity map).
TargetPort util.IntOrString `json:"targetPort,omitempty" description:"number or name of the port to access on the containers belonging to pods targeted by the service; defaults to the container's first open port"`
// Optional: Supports "ClientIP" and "None". Used to maintain session affinity.
SessionAffinity AffinityType `json:"sessionAffinity,omitempty" description:"enable client IP based session affinity; must be ClientIP or None; defaults to None"`
}
// Service is a named abstraction of software service (for example, mysql) consisting of local port
// (for example 3306) that the proxy listens on, and the selector that determines which pods
// will answer requests sent through the proxy.
type Service struct {
TypeMeta `json:",inline"`
ObjectMeta `json:"metadata,omitempty" description:"standard object metadata; see https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#metadata"`
// Spec defines the behavior of a service.
Spec ServiceSpec `json:"spec,omitempty" description:"specification of the desired behavior of the service; https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#spec-and-status"`
// Status represents the current status of a service.
Status ServiceStatus `json:"status,omitempty" description:"most recently observed status of the service; populated by the system, read-only; https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#spec-and-status"`
}
const (
// PortalIPNone - do not assign a portal IP
// no proxying required and no environment variables should be created for pods
PortalIPNone = "None"
)
// ServiceList holds a list of services.
type ServiceList struct {
TypeMeta `json:",inline"`
ListMeta `json:"metadata,omitempty" description:"standard list metadata; see https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#metadata"`
Items []Service `json:"items" description:"list of services"`
}
// Endpoints is a collection of endpoints that implement the actual service, for example:
// Name: "mysql", Endpoints: [{"ip": "10.10.1.1", "port": 1909}, {"ip": "10.10.2.2", "port": 8834}]
type Endpoints struct {
TypeMeta `json:",inline"`
ObjectMeta `json:"metadata,omitempty" description:"standard object metadata; see https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#metadata"`
// Optional: The IP protocol for these endpoints. Supports "TCP" and
// "UDP". Defaults to "TCP".
Protocol Protocol `json:"protocol,omitempty" description:"IP protocol for endpoint ports; must be UDP or TCP; TCP if unspecified"`
Endpoints []Endpoint `json:"endpoints,omitempty" description:"list of endpoints corresponding to a service"`
}
// Endpoint is a single IP endpoint of a service.
type Endpoint struct {
// Required: The IP of this endpoint.
// TODO: This should allow hostname or IP, see #4447.
IP string `json:"ip" description:"IP of this endpoint"`
// Required: The destination port to access.
Port int `json:"port" description:"destination port of this endpoint"`
// Optional: The kubernetes object related to the entry point.
TargetRef *ObjectReference `json:"targetRef,omitempty" description:"reference to object providing the endpoint"`
}
// EndpointsList is a list of endpoints.
type EndpointsList struct {
TypeMeta `json:",inline"`
ListMeta `json:"metadata,omitempty" description:"standard list metadata; see https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api-conventions.md#metadata"`
Items []Endpoints `json:"items" description:"list of endpoints"`
}
// NodeSpec describes the attributes that a node is created with.
type NodeSpec struct {
// PodCIDR represents the pod IP range assigned to the node
PodCIDR string `json:"podCIDR,omitempty" description:"pod IP range assigned to the node"`
// External ID of the node assigned by some machine database (e.g. a cloud provider)
ExternalID string `json:"externalID,omitempty" description:"external ID assigned to the node by some machine database (e.g. a cloud provider)"`
// Unschedulable controls node schedulability of new pods. By default node is schedulable.
Unschedulable bool `json:"unschedulable,omitempty" description:"disable pod scheduling on the node"`
}
// NodeSystemInfo is a set of ids/uuids to uniquely identify the node.
type NodeSystemInfo struct {
// MachineID is the machine-id reported by the node
MachineID string `json:"machineID"`
// SystemUUID is the system-uuid reported by the node
SystemUUID string `json:"systemUUID"`
// BootID is the boot-id reported by the node
BootID string `json:"bootID" description:"boot id is the boot-id reported by the node"`
}
// NodeStatus is information about the current status of a node.
type NodeStatus struct {
// Capacity represents the available resources of a node.
// see https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/resources.md for more details.
Capacity ResourceList `json:"capacity,omitempty" description:"compute resource capacity of the node; https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/resources.md"`
// NodePhase is the current lifecycle phase of the node.
Phase NodePhase `json:"phase,omitempty" description:"most recently observed lifecycle phase of the node"`
// Conditions is an array of current node conditions.
Conditions []NodeCondition `json:"conditions,omitempty" description:"list of node conditions observed"`
// Queried from cloud provider, if available.
Addresses []NodeAddress `json:"addresses,omitempty" description:"list of addresses reachable to the node"`
// NodeSystemInfo is a set of ids/uuids to uniquely identify the node
NodeInfo NodeSystemInfo `json:"nodeInfo,omitempty"`
}
// NodeInfo is the information collected on the node.
type NodeInfo struct {
TypeMeta `json:",inline"`
// Capacity represents the available resources of a node
Capacity ResourceList `json:"capacity,omitempty"`
// NodeSystemInfo is a set of ids/uuids to uniquely identify the node
NodeSystemInfo `json:",inline,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"