flytek8s

package
v0.10.4 Latest Latest
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 Go to latest Published: Feb 1, 2022 License: Apache-2.0 Imports: 25 Imported by: 5

Documentation

Index

Constants

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const Interrupted = "Interrupted"
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const OOMKilled = "OOMKilled"
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const PodKind = "pod"
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const ResourceNvidiaGPU = "nvidia.com/gpu"

ResourceNvidiaGPU is the name of the Nvidia GPU resource. Copied from: k8s.io/autoscaler/cluster-autoscaler/utils/gpu/gpu.go

View Source 
const SIGKILL = 137

Variables

This section is empty.

Functions

func AddCoPilotToContainer added in v0.5.29 

func AddCoPilotToContainer(ctx context.Context, cfg config.FlyteCoPilotConfig, c *v1.Container, iFace *core.TypedInterface, pilot *core.DataLoadingConfig) error

func AddCoPilotToPod added in v0.5.29 

func AddCoPilotToPod(ctx context.Context, cfg config.FlyteCoPilotConfig, coPilotPod *v1.PodSpec, iFace *core.TypedInterface, taskExecMetadata core2.TaskExecutionMetadata, inputPaths io.InputFilePaths, outputPaths io.OutputFilePaths, pilot *core.DataLoadingConfig) error

func AddFlyteCustomizationsToContainer added in v0.5.65 

func AddFlyteCustomizationsToContainer(ctx context.Context, parameters template.Parameters,
	mode ResourceCustomizationMode, container *v1.Container) error

AddFlyteCustomizationsToContainer takes a container definition which specifies how to run a Flyte task and fills in templated command and argument values, updates resources and decorates environment variables with platform and task-specific customizations.

func ApplyInterruptibleNodeAffinity added in v0.5.67 

func ApplyInterruptibleNodeAffinity(interruptible bool, podSpec *v1.PodSpec)

ApplyInterruptibleNodeAffinity configures the node-affinity for the pod using the configuration specified.

func ApplyResourceOverrides 

func ApplyResourceOverrides(resources, platformResources v1.ResourceRequirements, assignIfUnset bool) v1.ResourceRequirements

ApplyResourceOverrides handles resource resolution, allocation and validation. Primarily, it ensures that container resources do not exceed defined platformResource limits and in the case of assignIfUnset, ensures that limits and requests are sensibly set for resources of all types. Furthermore, this function handles some clean-up such as converting GPU resources to the recognized Nvidia gpu resource name and deleting unsupported Storage-type resources.

func BuildIdentityPod 

func BuildIdentityPod() *v1.Pod

func BuildPodWithSpec 

func BuildPodWithSpec(podSpec *v1.PodSpec) *v1.Pod

func CalculateStorageSize added in v0.5.29 

func CalculateStorageSize(requirements *v1.ResourceRequirements) *resource.Quantity

func CopilotCommandArgs added in v0.5.66 

func CopilotCommandArgs(storageConfig *storage.Config) []string

func DataVolume added in v0.5.29 

func DataVolume(name string, size *resource.Quantity) v1.Volume

func DecorateEnvVars 

func DecorateEnvVars(ctx context.Context, envVars []v1.EnvVar, id pluginsCore.TaskExecutionID) []v1.EnvVar

func DemystifyFailure added in v0.10.4 

func DemystifyFailure(status v1.PodStatus, info pluginsCore.TaskInfo) (pluginsCore.PhaseInfo, error)

DemystifyFailure resolves the various Kubernetes pod failure modes to determine the most appropriate course of action

func DemystifyPending 

func DemystifyPending(status v1.PodStatus) (pluginsCore.PhaseInfo, error)

DemystifyPending is one the core functions, that helps FlytePropeller determine if a pending pod is indeed pending, or it is actually stuck in a un-reparable state. In such a case the pod should be marked as dead and the task should be retried. This has to be handled sadly, as K8s is still largely designed for long running services that should recover from failures, but Flyte pods are completely automated and should either run or fail Important considerations. Pending Status in Pod could be for various reasons and sometimes could signal a problem Case I: Pending because the Image pull is failing and it is backing off 

This could be transient. So we can actually rely on the failure reason.
The failure transitions from ErrImagePull -> ImagePullBackoff

Case II: Not enough resources are available. This is tricky. It could be that the total number of 

resources requested is beyond the capability of the system. for this we will rely on configuration
and hence input gates. We should not allow bad requests that Request for large number of resource through.
In the case it makes through, we will fail after timeout

func DemystifySuccess added in v0.5.29 

func DemystifySuccess(status v1.PodStatus, info pluginsCore.TaskInfo) (pluginsCore.PhaseInfo, error)

func DeterminePrimaryContainerPhase added in v0.5.54 

func DeterminePrimaryContainerPhase(primaryContainerName string, statuses []v1.ContainerStatus, info *pluginsCore.TaskInfo) pluginsCore.PhaseInfo

DeterminePrimaryContainerPhase as the name suggests, given all the containers, will return a pluginsCore.PhaseInfo object corresponding to the phase of the primaryContainer which is identified using the provided name. This is useful in case of sidecars or pod jobs, where Flyte will monitor successful exit of a single container.

func DownloadCommandArgs added in v0.5.29 

func DownloadCommandArgs(fromInputsPath, outputPrefix storage.DataReference, toLocalPath string, format core.DataLoadingConfig_LiteralMapFormat, inputInterface *core.VariableMap) ([]string, error)

func FlyteCoPilotContainer added in v0.5.29 

func FlyteCoPilotContainer(name string, cfg config.FlyteCoPilotConfig, args []string, volumeMounts ...v1.VolumeMount) (v1.Container, error)

func GetContextEnvVars 

func GetContextEnvVars(ownerCtx context.Context) []v1.EnvVar

func GetExecutionEnvVars 

func GetExecutionEnvVars(id pluginsCore.TaskExecutionID) []v1.EnvVar

func GetLastTransitionOccurredAt 

func GetLastTransitionOccurredAt(pod *v1.Pod) v12.Time

func GetPodTolerations added in v0.5.29 

func GetPodTolerations(interruptible bool, resourceRequirements ...v1.ResourceRequirements) []v1.Toleration

func GetServiceAccountNameFromTaskExecutionMetadata added in v0.5.35 

func GetServiceAccountNameFromTaskExecutionMetadata(taskExecutionMetadata pluginmachinery_core.TaskExecutionMetadata) string

func MergeResources added in v0.5.65 

func MergeResources(in v1.ResourceRequirements, out *v1.ResourceRequirements)

func SidecarCommandArgs added in v0.5.29 

func SidecarCommandArgs(fromLocalPath string, outputPrefix, rawOutputPath storage.DataReference, startTimeout time.Duration, iface *core.TypedInterface) ([]string, error)

func ToK8sContainer 

func ToK8sContainer(ctx context.Context, taskContainer *core.Container, iFace *core.TypedInterface, parameters template.Parameters) (*v1.Container, error)

ToK8sContainer transforms a task template target of type core.Container into a bare-bones kubernetes container, which can be further modified with flyte-specific customizations specified by various static and run-time attributes.

func ToK8sEnvVar 

func ToK8sEnvVar(env []*core.KeyValuePair) []v1.EnvVar

func ToK8sPodSpec 

func ToK8sPodSpec(ctx context.Context, tCtx pluginsCore.TaskExecutionContext) (*v1.PodSpec, error)

ToK8sPodSpec constructs a pod spec from the given TaskTemplate

func ToK8sPodSpecWithInterruptible added in v0.6.4 

func ToK8sPodSpecWithInterruptible(ctx context.Context, tCtx pluginsCore.TaskExecutionContext, omitInterruptible bool) (*v1.PodSpec, error)

ToK8sPodSpecWithInterruptible constructs a pod spec from the gien TaskTemplate and optionally add (interruptible instance) support.

func UpdatePod added in v0.5.29 

func UpdatePod(taskExecutionMetadata pluginsCore.TaskExecutionMetadata,
	resourceRequirements []v1.ResourceRequirements, podSpec *v1.PodSpec)

UpdatePod updates the base pod spec used to execute tasks. This is configured with plugins and task metadata-specific options

func UpdatePodWithInterruptibleFlag added in v0.6.4 

func UpdatePodWithInterruptibleFlag(taskExecutionMetadata pluginsCore.TaskExecutionMetadata,
	resourceRequirements []v1.ResourceRequirements, podSpec *v1.PodSpec, omitInterruptible bool)

UpdatePodWithInterruptibleFlag updates the base pod spec used to execute tasks. This is configured with plugins and task metadata-specific options

Types

type ResourceCustomizationMode added in v0.5.65 

type ResourceCustomizationMode int
const (
	// ResourceCustomizationModeAssignResources is used for container tasks where resources are validated and assigned if necessary.
	ResourceCustomizationModeAssignResources ResourceCustomizationMode = iota
	// ResourceCustomizationModeMergeExistingResources is used for primary containers in pod tasks where container requests and limits are
	// merged, validated and assigned if necessary.
	ResourceCustomizationModeMergeExistingResources
	// ResourceCustomizationModeEnsureExistingResourcesInRange is used for secondary containers in pod tasks where requests and limits are only
	// adjusted if needed (downwards).
	ResourceCustomizationModeEnsureExistingResourcesInRange
)

func ResourceCustomizationModeString added in v0.7.0 

func ResourceCustomizationModeString(s string) (ResourceCustomizationMode, error)

ResourceCustomizationModeString retrieves an enum value from the enum constants string name. Throws an error if the param is not part of the enum.

func ResourceCustomizationModeValues added in v0.7.0 

func ResourceCustomizationModeValues() []ResourceCustomizationMode

ResourceCustomizationModeValues returns all values of the enum

func (ResourceCustomizationMode) IsAResourceCustomizationMode added in v0.7.0 

func (i ResourceCustomizationMode) IsAResourceCustomizationMode() bool

IsAResourceCustomizationMode returns "true" if the value is listed in the enum definition. "false" otherwise

func (ResourceCustomizationMode) String added in v0.7.0 

func (i ResourceCustomizationMode) String() string

type ResourceRequirement added in v0.7.0 

type ResourceRequirement struct {
	Request resource.Quantity
	Limit   resource.Quantity
}

func AdjustOrDefaultResource added in v0.7.0 

func AdjustOrDefaultResource(request, limit, platformDefault, platformLimit resource.Quantity) ResourceRequirement

AdjustOrDefaultResource validates resources conform to platform limits and assigns defaults for Request and Limit values by using the Request when the Limit is unset, and vice versa.

Source Files

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Directories

Path Synopsis
Package config contains configuration for the flytek8s module - which is global configuration for all Flyte K8s interactions.
 Package config contains configuration for the flytek8s module - which is global configuration for all Flyte K8s interactions.

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