Documentation
¶
Overview ¶
Common types in the Kubelet.
Index ¶
- Constants
- func GetContainerName(labels map[string]string) string
- func GetPodName(labels map[string]string) string
- func GetPodNamespace(labels map[string]string) string
- func GetPodSource(pod *api.Pod) (string, error)
- func GetPodUID(labels map[string]string) string
- func GetValidatedSources(sources []string) ([]string, error)
- func IsCriticalPod(pod *api.Pod) bool
- func SortInitContainerStatuses(p *api.Pod, statuses []api.ContainerStatus)
- type HttpGetter
- type PodOperation
- type PodUpdate
- type Reservation
- type SortedContainerStatuses
- type SyncPodType
- type Timestamp
Constants ¶
const (
KubernetesPodNameLabel = "io.kubernetes.pod.name"
KubernetesPodNamespaceLabel = "io.kubernetes.pod.namespace"
KubernetesPodUIDLabel = "io.kubernetes.pod.uid"
KubernetesContainerNameLabel = "io.kubernetes.container.name"
)
const (
// This is the current pod configuration
SET PodOperation = iota
// Pods with the given ids are new to this source
ADD
// Pods with the given ids are gracefully deleted from this source
DELETE
// Pods with the given ids have been removed from this source
REMOVE
// Pods with the given ids have been updated in this source
UPDATE
// Pods with the given ids have unexpected status in this source,
// kubelet should reconcile status with this source
RECONCILE
// These constants identify the sources of pods
// Updates from a file
FileSource = "file"
// Updates from querying a web page
HTTPSource = "http"
// Updates from Kubernetes API Server
ApiserverSource = "api"
// Updates from all sources
AllSource = "*"
NamespaceDefault = api.NamespaceDefault
)
const ConfigFirstSeenAnnotationKey = "kubernetes.io/config.seen"
const ConfigHashAnnotationKey = "kubernetes.io/config.hash"
const ConfigMirrorAnnotationKey = "kubernetes.io/config.mirror"
const ConfigSourceAnnotationKey = "kubernetes.io/config.source"
const CriticalPodAnnotationKey = "scheduler.alpha.kubernetes.io/critical-pod"
This key needs to sync with the key used by the rescheduler, which currently lives in contrib. Its presence indicates 2 things, as far as the kubelet is concerned:
- Resource related admission checks will prioritize the admission of pods bearing the key, over pods without the key, regardless of QoS.
- The OOM score of pods bearing the key will be <= pods without the key (where the <= part is determied by QoS).
const (
// system default DNS resolver configuration
ResolvConfDefault = "/etc/resolv.conf"
)
Variables ¶
This section is empty.
Functions ¶
func GetContainerName ¶ added in v1.3.0
func GetContainerName(labels map[string]string) string
func GetPodName ¶ added in v1.3.0
func GetPodName(labels map[string]string) string
func GetPodNamespace ¶ added in v1.3.0
func GetPodNamespace(labels map[string]string) string
func GetPodSource ¶ added in v1.2.0
func GetPodSource(pod *api.Pod) (string, error)
GetPodSource returns the source of the pod based on the annotation.
func GetValidatedSources ¶ added in v1.2.0
func GetValidatedSources(sources []string) ([]string, error)
Gets all validated sources from the specified sources.
func IsCriticalPod ¶ added in v1.4.8
func IsCriticalPod(pod *api.Pod) bool
IsCriticalPod returns true if the pod bears the critical pod annotation key. Both the rescheduler and the kubelet use this key to make admission and scheduling decisions.
func SortInitContainerStatuses ¶ added in v1.3.0
func SortInitContainerStatuses(p *api.Pod, statuses []api.ContainerStatus)
SortInitContainerStatuses ensures that statuses are in the order that their init container appears in the pod spec
Types ¶
type HttpGetter ¶
type HttpGetter interface {
Get(url string) (*http.Response, error)
}
type PodOperation ¶ added in v1.2.0
type PodOperation int
PodOperation defines what changes will be made on a pod configuration.
type PodUpdate ¶ added in v1.2.0
type PodUpdate struct {
Pods []*api.Pod
Op PodOperation
Source string
}
PodUpdate defines an operation sent on the channel. You can add or remove single services by sending an array of size one and Op == ADD|REMOVE (with REMOVE, only the ID is required). For setting the state of the system to a given state for this source configuration, set Pods as desired and Op to SET, which will reset the system state to that specified in this operation for this source channel. To remove all pods, set Pods to empty object and Op to SET.
Additionally, Pods should never be nil - it should always point to an empty slice. While functionally similar, this helps our unit tests properly check that the correct PodUpdates are generated.
type Reservation ¶ added in v1.2.0
type Reservation struct {
// System represents resources reserved for non-kubernetes components.
System api.ResourceList
// Kubernetes represents resources reserved for kubernetes system components.
Kubernetes api.ResourceList
}
Reservation represents reserved resources for non-pod components.
type SortedContainerStatuses ¶ added in v0.20.0
type SortedContainerStatuses []api.ContainerStatus
A type to help sort container statuses based on container names.
type SyncPodType ¶ added in v1.2.0
type SyncPodType int
SyncPodType classifies pod updates, eg: create, update.
const (
// SyncPodSync is when the pod is synced to ensure desired state
SyncPodSync SyncPodType = iota
// SyncPodUpdate is when the pod is updated from source
SyncPodUpdate
// SyncPodCreate is when the pod is created from source
SyncPodCreate
// SyncPodKill is when the pod is killed based on a trigger internal to the kubelet for eviction.
// If a SyncPodKill request is made to pod workers, the request is never dropped, and will always be processed.
SyncPodKill
)
type Timestamp ¶ added in v0.20.0
type Timestamp struct {
// contains filtered or unexported fields
}
Timestamp wraps around time.Time and offers utilities to format and parse the time using RFC3339Nano
func ConvertToTimestamp ¶ added in v0.20.0
func ConvertToTimestamp(timeString string) *Timestamp
ConvertToTimestamp takes a string, parses it using the RFC3339Nano layout, and converts it to a Timestamp object.
func NewTimestamp ¶ added in v0.20.0
func NewTimestamp() *Timestamp
NewTimestamp returns a Timestamp object using the current time.
Source Files