Documentation
¶
Overview ¶
Package cm (abbreviation of "container manager") and its subpackages contain all the kubelet code to manage containers. For example, they contain functions to configure containers' cgroups, ensure containers run with the desired QoS, and allocate compute resources like cpus, memory, devices...
Index ¶
- Constants
- Variables
- func GetKubeletContainer(kubeletCgroups string) (string, error)
- func GetPodCgroupNameSuffix(podUID types.UID) string
- func IsSystemdStyleName(name string) bool
- func MilliCPUToQuota(milliCPU, period int64) int64
- func MilliCPUToShares(milliCPU int64) int64
- func NewFakeInternalContainerLifecycle() *fakeInternalContainerLifecycle
- func NodeAllocatableRoot(cgroupRoot string, cgroupsPerQOS bool, cgroupDriver string) string
- func ParseQOSReserved(m map[string]string) (*map[v1.ResourceName]int64, error)
- type ActivePodsFunc
- type CgroupConfig
- type CgroupManager
- type CgroupName
- type CgroupSubsystems
- type ContainerManager
- func NewContainerManager(mountUtil mount.Interface, cadvisorInterface cadvisor.Interface, ...) (ContainerManager, error)
- func NewStubContainerManager() ContainerManager
- func NewStubContainerManagerWithDevicePluginResource(extendedPluginResources v1.ResourceList) ContainerManager
- func NewStubContainerManagerWithExtendedResource(shouldResetExtendedResourceCapacity bool) ContainerManager
- type FakeContainerManager
- func (cm *FakeContainerManager) GetAllocatableCPUs() []int64
- func (cm *FakeContainerManager) GetAllocatableDevices() []*podresourcesapi.ContainerDevices
- func (cm *FakeContainerManager) GetAllocatableMemory() []*podresourcesapi.ContainerMemory
- func (cm *FakeContainerManager) GetAllocateResourcesPodAdmitHandler() lifecycle.PodAdmitHandler
- func (cm *FakeContainerManager) GetCPUs(_, _ string) []int64
- func (cm *FakeContainerManager) GetCapacity(localStorageCapacityIsolation bool) v1.ResourceList
- func (cm *FakeContainerManager) GetDevicePluginResourceCapacity() (v1.ResourceList, v1.ResourceList, []string)
- func (cm *FakeContainerManager) GetDevices(_, _ string) []*podresourcesapi.ContainerDevices
- func (cm *FakeContainerManager) GetDynamicResources(pod *v1.Pod, container *v1.Container) []*podresourcesapi.DynamicResource
- func (cm *FakeContainerManager) GetMemory(_, _ string) []*podresourcesapi.ContainerMemory
- func (cm *FakeContainerManager) GetMountedSubsystems() *CgroupSubsystems
- func (cm *FakeContainerManager) GetNodeAllocatableAbsolute() v1.ResourceList
- func (cm *FakeContainerManager) GetNodeAllocatableReservation() v1.ResourceList
- func (cm *FakeContainerManager) GetNodeConfig() NodeConfig
- func (cm *FakeContainerManager) GetPluginRegistrationHandler() cache.PluginHandler
- func (cm *FakeContainerManager) GetPodCgroupRoot() string
- func (cm *FakeContainerManager) GetQOSContainersInfo() QOSContainersInfo
- func (cm *FakeContainerManager) GetResources(pod *v1.Pod, container *v1.Container) (*kubecontainer.RunContainerOptions, error)
- func (cm *FakeContainerManager) InternalContainerLifecycle() InternalContainerLifecycle
- func (cm *FakeContainerManager) NewPodContainerManager() PodContainerManager
- func (cm *FakeContainerManager) PodMightNeedToUnprepareResources(UID types.UID) bool
- func (cm *FakeContainerManager) PrepareDynamicResources(pod *v1.Pod) error
- func (cm *FakeContainerManager) ShouldResetExtendedResourceCapacity() bool
- func (cm *FakeContainerManager) Start(_ *v1.Node, _ ActivePodsFunc, _ config.SourcesReady, ...) error
- func (cm *FakeContainerManager) Status() Status
- func (cm *FakeContainerManager) SystemCgroupsLimit() v1.ResourceList
- func (cm *FakeContainerManager) UnprepareDynamicResources(*v1.Pod) error
- func (cm *FakeContainerManager) UpdateAllocatedDevices()
- func (cm *FakeContainerManager) UpdateAllocatedResourcesStatus(pod *v1.Pod, status *v1.PodStatus)
- func (cm *FakeContainerManager) UpdatePluginResources(*schedulerframework.NodeInfo, *lifecycle.PodAdmitAttributes) error
- func (cm *FakeContainerManager) UpdateQOSCgroups() error
- func (cm *FakeContainerManager) Updates() <-chan resourceupdates.Update
- type FakePodContainerManager
- func (m *FakePodContainerManager) AddPodFromCgroups(pod *kubecontainer.Pod)
- func (m *FakePodContainerManager) Destroy(name CgroupName) error
- func (m *FakePodContainerManager) EnsureExists(_ *v1.Pod) error
- func (m *FakePodContainerManager) Exists(_ *v1.Pod) bool
- func (m *FakePodContainerManager) GetAllPodsFromCgroups() (map[types.UID]CgroupName, error)
- func (cm *FakePodContainerManager) GetPodCgroupConfig(_ *v1.Pod, _ v1.ResourceName) (*ResourceConfig, error)
- func (cm *FakePodContainerManager) GetPodCgroupMemoryUsage(_ *v1.Pod) (uint64, error)
- func (m *FakePodContainerManager) GetPodContainerName(_ *v1.Pod) (CgroupName, string)
- func (m *FakePodContainerManager) IsPodCgroup(cgroupfs string) (bool, types.UID)
- func (m *FakePodContainerManager) ReduceCPULimits(_ CgroupName) error
- func (cm *FakePodContainerManager) SetPodCgroupConfig(_ *v1.Pod, _ v1.ResourceName, _ *ResourceConfig) error
- type InternalContainerLifecycle
- type NodeAllocatableConfig
- type NodeConfig
- type PodContainerManager
- type QOSContainersInfo
- type ResourceConfig
- type Status
Constants ¶
const ( MilliCPUToCPU = 0 QuotaPeriod = 0 MinQuotaPeriod = 0 )
const (
// Warning message for the users still using cgroup v1
CgroupV1MaintenanceModeWarning = "Cgroup v1 support is in maintenance mode, please migrate to Cgroup v2."
)
Variables ¶
var RootCgroupName = CgroupName([]string{})
Functions ¶
func GetKubeletContainer ¶ added in v1.15.0
GetKubeletContainer returns the cgroup the kubelet will use
func GetPodCgroupNameSuffix ¶ added in v1.9.0
GetPodCgroupNameSuffix returns the last element of the pod CgroupName identifier
func IsSystemdStyleName ¶ added in v1.9.0
func MilliCPUToQuota ¶ added in v1.5.0
MilliCPUToQuota converts milliCPU and period to CFS quota values.
func MilliCPUToShares ¶ added in v1.5.0
MilliCPUToShares converts the milliCPU to CFS shares.
func NewFakeInternalContainerLifecycle ¶ added in v1.8.0
func NewFakeInternalContainerLifecycle() *fakeInternalContainerLifecycle
func NodeAllocatableRoot ¶ added in v1.15.0
NodeAllocatableRoot returns the literal cgroup path for the node allocatable cgroup
func ParseQOSReserved ¶ added in v1.6.0
ParseQOSReserved parses the --qos-reserved option
Types ¶
type ActivePodsFunc ¶ added in v1.6.0
type CgroupConfig ¶ added in v1.4.0
type CgroupConfig struct { // Fully qualified name prior to any driver specific conversions. Name CgroupName // ResourceParameters contains various cgroups settings to apply. ResourceParameters *ResourceConfig }
CgroupConfig holds the cgroup configuration information. This is common object which is used to specify cgroup information to both systemd and raw cgroup fs implementation of the Cgroup Manager interface.
type CgroupManager ¶ added in v1.4.0
type CgroupManager interface { // Create creates and applies the cgroup configurations on the cgroup. // It just creates the leaf cgroups. // It expects the parent cgroup to already exist. Create(*CgroupConfig) error // Destroy the cgroup. Destroy(*CgroupConfig) error // Update cgroup configuration. Update(*CgroupConfig) error // Validate checks if the cgroup is valid Validate(name CgroupName) error // Exists checks if the cgroup already exists Exists(name CgroupName) bool // Name returns the literal cgroupfs name on the host after any driver specific conversions. // We would expect systemd implementation to make appropriate name conversion. // For example, if we pass {"foo", "bar"} // then systemd should convert the name to something like // foo.slice/foo-bar.slice Name(name CgroupName) string // CgroupName converts the literal cgroupfs name on the host to an internal identifier. CgroupName(name string) CgroupName // Pids scans through all subsystems to find pids associated with specified cgroup. Pids(name CgroupName) []int // ReduceCPULimits reduces the CPU CFS values to the minimum amount of shares. ReduceCPULimits(cgroupName CgroupName) error // MemoryUsage returns current memory usage of the specified cgroup, as read from the cgroupfs. MemoryUsage(name CgroupName) (int64, error) // Get the resource config values applied to the cgroup for specified resource type GetCgroupConfig(name CgroupName, resource v1.ResourceName) (*ResourceConfig, error) // Set resource config for the specified resource type on the cgroup SetCgroupConfig(name CgroupName, resource v1.ResourceName, resourceConfig *ResourceConfig) error // Version of the cgroup implementation on the host Version() int }
CgroupManager allows for cgroup management. Supports Cgroup Creation ,Deletion and Updates.
func NewCgroupManager ¶ added in v1.4.0
func NewCgroupManager(_ interface{}) CgroupManager
type CgroupName ¶ added in v1.5.0
type CgroupName []string
CgroupName is the abstract name of a cgroup prior to any driver specific conversion. It is specified as a list of strings from its individual components, such as: {"kubepods", "burstable", "pod1234-abcd-5678-efgh"}
func NewCgroupName ¶ added in v1.11.0
func NewCgroupName(base CgroupName, components ...string) CgroupName
func ParseCgroupfsToCgroupName ¶ added in v1.11.0
func ParseCgroupfsToCgroupName(name string) CgroupName
func ParseSystemdToCgroupName ¶ added in v1.11.0
func ParseSystemdToCgroupName(name string) CgroupName
func (CgroupName) ToCgroupfs ¶ added in v1.11.0
func (cgroupName CgroupName) ToCgroupfs() string
func (CgroupName) ToSystemd ¶ added in v1.11.0
func (cgroupName CgroupName) ToSystemd() string
type CgroupSubsystems ¶ added in v1.4.0
func GetCgroupSubsystems ¶ added in v1.5.0
func GetCgroupSubsystems() (*CgroupSubsystems, error)
GetCgroupSubsystems returns information about the mounted cgroup subsystems
type ContainerManager ¶
type ContainerManager interface { // Runs the container manager's housekeeping. // - Ensures that the Docker daemon is in a container. // - Creates the system container where all non-containerized processes run. Start(*v1.Node, ActivePodsFunc, config.SourcesReady, status.PodStatusProvider, internalapi.RuntimeService, bool) error // SystemCgroupsLimit returns resources allocated to system cgroups in the machine. // These cgroups include the system and Kubernetes services. SystemCgroupsLimit() v1.ResourceList // GetNodeConfig returns a NodeConfig that is being used by the container manager. GetNodeConfig() NodeConfig // Status returns internal Status. Status() Status // NewPodContainerManager is a factory method which returns a podContainerManager object // Returns a noop implementation if qos cgroup hierarchy is not enabled NewPodContainerManager() PodContainerManager // GetMountedSubsystems returns the mounted cgroup subsystems on the node GetMountedSubsystems() *CgroupSubsystems // GetQOSContainersInfo returns the names of top level QoS containers GetQOSContainersInfo() QOSContainersInfo // GetNodeAllocatableReservation returns the amount of compute resources that have to be reserved from scheduling. GetNodeAllocatableReservation() v1.ResourceList // GetCapacity returns the amount of compute resources tracked by container manager available on the node. GetCapacity(localStorageCapacityIsolation bool) v1.ResourceList // GetDevicePluginResourceCapacity returns the node capacity (amount of total device plugin resources), // node allocatable (amount of total healthy resources reported by device plugin), // and inactive device plugin resources previously registered on the node. GetDevicePluginResourceCapacity() (v1.ResourceList, v1.ResourceList, []string) // UpdateQOSCgroups performs housekeeping updates to ensure that the top // level QoS containers have their desired state in a thread-safe way UpdateQOSCgroups() error // GetResources returns RunContainerOptions with devices, mounts, and env fields populated for // extended resources required by container. GetResources(pod *v1.Pod, container *v1.Container) (*kubecontainer.RunContainerOptions, error) // UpdatePluginResources calls Allocate of device plugin handler for potential // requests for device plugin resources, and returns an error if fails. // Otherwise, it updates allocatableResource in nodeInfo if necessary, // to make sure it is at least equal to the pod's requested capacity for // any registered device plugin resource UpdatePluginResources(*schedulerframework.NodeInfo, *lifecycle.PodAdmitAttributes) error InternalContainerLifecycle() InternalContainerLifecycle // GetPodCgroupRoot returns the cgroup which contains all pods. GetPodCgroupRoot() string // GetPluginRegistrationHandler returns a plugin registration handler // The pluginwatcher's Handlers allow to have a single module for handling // registration. GetPluginRegistrationHandler() cache.PluginHandler // ShouldResetExtendedResourceCapacity returns whether or not the extended resources should be zeroed, // due to node recreation. ShouldResetExtendedResourceCapacity() bool // GetAllocateResourcesPodAdmitHandler returns an instance of a PodAdmitHandler responsible for allocating pod resources. GetAllocateResourcesPodAdmitHandler() lifecycle.PodAdmitHandler // GetNodeAllocatableAbsolute returns the absolute value of Node Allocatable which is primarily useful for enforcement. GetNodeAllocatableAbsolute() v1.ResourceList // PrepareDynamicResource prepares dynamic pod resources PrepareDynamicResources(*v1.Pod) error // UnprepareDynamicResources unprepares dynamic pod resources UnprepareDynamicResources(*v1.Pod) error // PodMightNeedToUnprepareResources returns true if the pod with the given UID // might need to unprepare resources. PodMightNeedToUnprepareResources(UID types.UID) bool // UpdateAllocatedResourcesStatus updates the status of allocated resources for the pod. UpdateAllocatedResourcesStatus(pod *v1.Pod, status *v1.PodStatus) // Updates returns a channel that receives an Update when the device changed its status. Updates() <-chan resourceupdates.Update // Implements the PodResources Provider API podresources.CPUsProvider podresources.DevicesProvider podresources.MemoryProvider podresources.DynamicResourcesProvider }
Manages the containers running on a machine.
func NewContainerManager ¶
func NewContainerManager(mountUtil mount.Interface, cadvisorInterface cadvisor.Interface, nodeConfig NodeConfig, failSwapOn bool, recorder record.EventRecorder, kubeClient clientset.Interface) (ContainerManager, error)
NewContainerManager creates windows container manager.
func NewStubContainerManager ¶
func NewStubContainerManager() ContainerManager
func NewStubContainerManagerWithDevicePluginResource ¶ added in v1.22.0
func NewStubContainerManagerWithDevicePluginResource(extendedPluginResources v1.ResourceList) ContainerManager
func NewStubContainerManagerWithExtendedResource ¶ added in v1.14.9
func NewStubContainerManagerWithExtendedResource(shouldResetExtendedResourceCapacity bool) ContainerManager
type FakeContainerManager ¶ added in v1.21.0
type FakeContainerManager struct { sync.Mutex CalledFunctions []string PodContainerManager *FakePodContainerManager // contains filtered or unexported fields }
func NewFakeContainerManager ¶ added in v1.21.0
func NewFakeContainerManager() *FakeContainerManager
func (*FakeContainerManager) GetAllocatableCPUs ¶ added in v1.21.0
func (cm *FakeContainerManager) GetAllocatableCPUs() []int64
func (*FakeContainerManager) GetAllocatableDevices ¶ added in v1.21.0
func (cm *FakeContainerManager) GetAllocatableDevices() []*podresourcesapi.ContainerDevices
func (*FakeContainerManager) GetAllocatableMemory ¶ added in v1.22.0
func (cm *FakeContainerManager) GetAllocatableMemory() []*podresourcesapi.ContainerMemory
func (*FakeContainerManager) GetAllocateResourcesPodAdmitHandler ¶ added in v1.21.0
func (cm *FakeContainerManager) GetAllocateResourcesPodAdmitHandler() lifecycle.PodAdmitHandler
func (*FakeContainerManager) GetCPUs ¶ added in v1.21.0
func (cm *FakeContainerManager) GetCPUs(_, _ string) []int64
func (*FakeContainerManager) GetCapacity ¶ added in v1.21.0
func (cm *FakeContainerManager) GetCapacity(localStorageCapacityIsolation bool) v1.ResourceList
func (*FakeContainerManager) GetDevicePluginResourceCapacity ¶ added in v1.21.0
func (cm *FakeContainerManager) GetDevicePluginResourceCapacity() (v1.ResourceList, v1.ResourceList, []string)
func (*FakeContainerManager) GetDevices ¶ added in v1.21.0
func (cm *FakeContainerManager) GetDevices(_, _ string) []*podresourcesapi.ContainerDevices
func (*FakeContainerManager) GetDynamicResources ¶ added in v1.27.0
func (cm *FakeContainerManager) GetDynamicResources(pod *v1.Pod, container *v1.Container) []*podresourcesapi.DynamicResource
func (*FakeContainerManager) GetMemory ¶ added in v1.22.0
func (cm *FakeContainerManager) GetMemory(_, _ string) []*podresourcesapi.ContainerMemory
func (*FakeContainerManager) GetMountedSubsystems ¶ added in v1.21.0
func (cm *FakeContainerManager) GetMountedSubsystems() *CgroupSubsystems
func (*FakeContainerManager) GetNodeAllocatableAbsolute ¶ added in v1.22.0
func (cm *FakeContainerManager) GetNodeAllocatableAbsolute() v1.ResourceList
func (*FakeContainerManager) GetNodeAllocatableReservation ¶ added in v1.21.0
func (cm *FakeContainerManager) GetNodeAllocatableReservation() v1.ResourceList
func (*FakeContainerManager) GetNodeConfig ¶ added in v1.21.0
func (cm *FakeContainerManager) GetNodeConfig() NodeConfig
func (*FakeContainerManager) GetPluginRegistrationHandler ¶ added in v1.21.0
func (cm *FakeContainerManager) GetPluginRegistrationHandler() cache.PluginHandler
func (*FakeContainerManager) GetPodCgroupRoot ¶ added in v1.21.0
func (cm *FakeContainerManager) GetPodCgroupRoot() string
func (*FakeContainerManager) GetQOSContainersInfo ¶ added in v1.21.0
func (cm *FakeContainerManager) GetQOSContainersInfo() QOSContainersInfo
func (*FakeContainerManager) GetResources ¶ added in v1.21.0
func (cm *FakeContainerManager) GetResources(pod *v1.Pod, container *v1.Container) (*kubecontainer.RunContainerOptions, error)
func (*FakeContainerManager) InternalContainerLifecycle ¶ added in v1.21.0
func (cm *FakeContainerManager) InternalContainerLifecycle() InternalContainerLifecycle
func (*FakeContainerManager) NewPodContainerManager ¶ added in v1.21.0
func (cm *FakeContainerManager) NewPodContainerManager() PodContainerManager
func (*FakeContainerManager) PodMightNeedToUnprepareResources ¶ added in v1.26.0
func (cm *FakeContainerManager) PodMightNeedToUnprepareResources(UID types.UID) bool
func (*FakeContainerManager) PrepareDynamicResources ¶ added in v1.27.0
func (cm *FakeContainerManager) PrepareDynamicResources(pod *v1.Pod) error
func (*FakeContainerManager) ShouldResetExtendedResourceCapacity ¶ added in v1.21.0
func (cm *FakeContainerManager) ShouldResetExtendedResourceCapacity() bool
func (*FakeContainerManager) Start ¶ added in v1.21.0
func (cm *FakeContainerManager) Start(_ *v1.Node, _ ActivePodsFunc, _ config.SourcesReady, _ status.PodStatusProvider, _ internalapi.RuntimeService, _ bool) error
func (*FakeContainerManager) Status ¶ added in v1.21.0
func (cm *FakeContainerManager) Status() Status
func (*FakeContainerManager) SystemCgroupsLimit ¶ added in v1.21.0
func (cm *FakeContainerManager) SystemCgroupsLimit() v1.ResourceList
func (*FakeContainerManager) UnprepareDynamicResources ¶ added in v1.27.0
func (cm *FakeContainerManager) UnprepareDynamicResources(*v1.Pod) error
func (*FakeContainerManager) UpdateAllocatedDevices ¶ added in v1.21.0
func (cm *FakeContainerManager) UpdateAllocatedDevices()
func (*FakeContainerManager) UpdateAllocatedResourcesStatus ¶ added in v1.31.0
func (cm *FakeContainerManager) UpdateAllocatedResourcesStatus(pod *v1.Pod, status *v1.PodStatus)
func (*FakeContainerManager) UpdatePluginResources ¶ added in v1.21.0
func (cm *FakeContainerManager) UpdatePluginResources(*schedulerframework.NodeInfo, *lifecycle.PodAdmitAttributes) error
func (*FakeContainerManager) UpdateQOSCgroups ¶ added in v1.21.0
func (cm *FakeContainerManager) UpdateQOSCgroups() error
func (*FakeContainerManager) Updates ¶ added in v1.31.0
func (cm *FakeContainerManager) Updates() <-chan resourceupdates.Update
type FakePodContainerManager ¶ added in v1.21.0
type FakePodContainerManager struct { sync.Mutex CalledFunctions []string Cgroups map[types.UID]CgroupName }
func NewFakePodContainerManager ¶ added in v1.21.0
func NewFakePodContainerManager() *FakePodContainerManager
func (*FakePodContainerManager) AddPodFromCgroups ¶ added in v1.21.0
func (m *FakePodContainerManager) AddPodFromCgroups(pod *kubecontainer.Pod)
func (*FakePodContainerManager) Destroy ¶ added in v1.21.0
func (m *FakePodContainerManager) Destroy(name CgroupName) error
func (*FakePodContainerManager) EnsureExists ¶ added in v1.21.0
func (m *FakePodContainerManager) EnsureExists(_ *v1.Pod) error
func (*FakePodContainerManager) Exists ¶ added in v1.21.0
func (m *FakePodContainerManager) Exists(_ *v1.Pod) bool
func (*FakePodContainerManager) GetAllPodsFromCgroups ¶ added in v1.21.0
func (m *FakePodContainerManager) GetAllPodsFromCgroups() (map[types.UID]CgroupName, error)
func (*FakePodContainerManager) GetPodCgroupConfig ¶ added in v1.27.0
func (cm *FakePodContainerManager) GetPodCgroupConfig(_ *v1.Pod, _ v1.ResourceName) (*ResourceConfig, error)
func (*FakePodContainerManager) GetPodCgroupMemoryUsage ¶ added in v1.27.0
func (cm *FakePodContainerManager) GetPodCgroupMemoryUsage(_ *v1.Pod) (uint64, error)
func (*FakePodContainerManager) GetPodContainerName ¶ added in v1.21.0
func (m *FakePodContainerManager) GetPodContainerName(_ *v1.Pod) (CgroupName, string)
func (*FakePodContainerManager) IsPodCgroup ¶ added in v1.21.0
func (m *FakePodContainerManager) IsPodCgroup(cgroupfs string) (bool, types.UID)
func (*FakePodContainerManager) ReduceCPULimits ¶ added in v1.21.0
func (m *FakePodContainerManager) ReduceCPULimits(_ CgroupName) error
func (*FakePodContainerManager) SetPodCgroupConfig ¶ added in v1.27.0
func (cm *FakePodContainerManager) SetPodCgroupConfig(_ *v1.Pod, _ v1.ResourceName, _ *ResourceConfig) error
type InternalContainerLifecycle ¶ added in v1.8.0
type NodeAllocatableConfig ¶ added in v1.6.0
type NodeAllocatableConfig struct { KubeReservedCgroupName string SystemReservedCgroupName string ReservedSystemCPUs cpuset.CPUSet EnforceNodeAllocatable sets.Set[string] KubeReserved v1.ResourceList SystemReserved v1.ResourceList HardEvictionThresholds []evictionapi.Threshold }
type NodeConfig ¶
type NodeConfig struct { NodeName types.NodeName RuntimeCgroupsName string SystemCgroupsName string KubeletCgroupsName string KubeletOOMScoreAdj int32 ContainerRuntime string CgroupsPerQOS bool CgroupRoot string CgroupDriver string KubeletRootDir string ProtectKernelDefaults bool NodeAllocatableConfig QOSReserved map[v1.ResourceName]int64 CPUManagerPolicy string CPUManagerPolicyOptions map[string]string TopologyManagerScope string CPUManagerReconcilePeriod time.Duration ExperimentalMemoryManagerPolicy string ExperimentalMemoryManagerReservedMemory []kubeletconfig.MemoryReservation PodPidsLimit int64 EnforceCPULimits bool CPUCFSQuotaPeriod time.Duration TopologyManagerPolicy string TopologyManagerPolicyOptions map[string]string CgroupVersion int }
type PodContainerManager ¶ added in v1.4.0
type PodContainerManager interface { // GetPodContainerName returns the CgroupName identifier, and its literal cgroupfs form on the host. GetPodContainerName(*v1.Pod) (CgroupName, string) // EnsureExists takes a pod as argument and makes sure that // pod cgroup exists if qos cgroup hierarchy flag is enabled. // If the pod cgroup doesn't already exist this method creates it. EnsureExists(*v1.Pod) error // Exists returns true if the pod cgroup exists. Exists(*v1.Pod) bool // Destroy takes a pod Cgroup name as argument and destroys the pod's container. Destroy(name CgroupName) error // ReduceCPULimits reduces the CPU CFS values to the minimum amount of shares. ReduceCPULimits(name CgroupName) error // GetAllPodsFromCgroups enumerates the set of pod uids to their associated cgroup based on state of cgroupfs system. GetAllPodsFromCgroups() (map[types.UID]CgroupName, error) // IsPodCgroup returns true if the literal cgroupfs name corresponds to a pod IsPodCgroup(cgroupfs string) (bool, types.UID) // Get value of memory usage for the pod Cgroup GetPodCgroupMemoryUsage(pod *v1.Pod) (uint64, error) // Get the resource config values applied to the pod cgroup for specified resource type GetPodCgroupConfig(pod *v1.Pod, resource v1.ResourceName) (*ResourceConfig, error) // Set resource config values for the specified resource type on the pod cgroup SetPodCgroupConfig(pod *v1.Pod, resource v1.ResourceName, resourceConfig *ResourceConfig) error }
PodContainerManager stores and manages pod level containers The Pod workers interact with the PodContainerManager to create and destroy containers for the pod.
type QOSContainersInfo ¶ added in v1.4.0
type QOSContainersInfo struct { Guaranteed CgroupName BestEffort CgroupName Burstable CgroupName }
QOSContainersInfo stores the names of containers per qos
type ResourceConfig ¶ added in v1.4.0
type ResourceConfig struct { // Memory limit (in bytes). Memory *int64 CPUShares *uint64 // CPU hardcap limit (in usecs). Allowed cpu time in a given period. CPUQuota *int64 // CPU quota period. CPUPeriod *uint64 // HugePageLimit map from page size (in bytes) to limit (in bytes) HugePageLimit map[int64]int64 // Maximum number of pids PidsLimit *int64 // Unified for cgroup v2 Unified map[string]string }
ResourceConfig holds information about all the supported cgroup resource parameters.
func ResourceConfigForPod ¶ added in v1.5.0
func ResourceConfigForPod(pod *v1.Pod, enforceCPULimit bool, cpuPeriod uint64, enforceMemoryQoS bool) *ResourceConfig
ResourceConfigForPod takes the input pod and outputs the cgroup resource config.
Source Files
¶
- cgroup_manager_unsupported.go
- container_manager.go
- container_manager_stub.go
- container_manager_windows.go
- doc.go
- fake_container_manager.go
- fake_internal_container_lifecycle.go
- fake_pod_container_manager.go
- helpers.go
- helpers_unsupported.go
- internal_container_lifecycle.go
- internal_container_lifecycle_windows.go
- pod_container_manager_stub.go
- pod_container_manager_unsupported.go
- types.go