cgroups

Documentation

Index

• Constants
• func DeviceToCgroupDevice(device string) (*configs.Device, error)
• func DeviceToLinuxDevice(device string) (specs.LinuxDeviceCgroup, error)
• func IsSystemdCgroup(cgroupPath string) bool
• func RenameCgroupPath(path string) (string, error)
• func SetLogger(logger *logrus.Entry)
• func ValidCgroupPath(path string, systemdCgroup bool) (string, error)
• type Config
• type Manager
  • func New(config *Config) (*Manager, error)
  • func (m *Manager) Add(pid int) error
  • func (m *Manager) AddDevice(device string) error
  • func (m *Manager) Apply() error
  • func (m *Manager) Destroy() error
  • func (m *Manager) GetCgroups() (*configs.Cgroup, error)
  • func (m *Manager) GetPaths() map[string]string
  • func (m *Manager) RemoveDevice(device string) error
  • func (m *Manager) SetCPUSet(cpuset, memset string) error

Constants

const CgroupKataPrefix = "kata"

prepend a kata specific string to oci cgroup path to form a different cgroup path, thus cAdvisor couldn't find kata containers cgroup path on host to prevent it from grabbing the stats data.

const DefaultCgroupPath = "/vc"

DefaultCgroupPath runtime-determined location in the cgroups hierarchy.

Functions

func DeviceToCgroupDevice

func DeviceToCgroupDevice(device string) (*configs.Device, error)

func DeviceToLinuxDevice

func DeviceToLinuxDevice(device string) (specs.LinuxDeviceCgroup, error)

func IsSystemdCgroup

func IsSystemdCgroup(cgroupPath string) bool

func RenameCgroupPath

func RenameCgroupPath(path string) (string, error)

func SetLogger

func SetLogger(logger *logrus.Entry)

SetLogger sets up a logger for this pkg

func ValidCgroupPath

func ValidCgroupPath(path string, systemdCgroup bool) (string, error)

validCgroupPath returns a valid cgroup path. see https://github.com/opencontainers/runtime-spec/blob/master/config-linux.md#cgroups-path

Types

type Config

type Config struct {
	// Cgroups specifies specific cgroup settings for the various subsystems that the container is
	// placed into to limit the resources the container has available
	// If nil, New() will create one.
	Cgroups *configs.Cgroup

	// CgroupPaths contains paths to all the cgroups setup for a container. Key is cgroup subsystem name
	// with the value as the path.
	CgroupPaths map[string]string

	// Resources represents the runtime resource constraints
	Resources specs.LinuxResources

	// CgroupPath is the OCI spec cgroup path
	CgroupPath string
}

type Manager

type Manager struct {
	sync.Mutex
	// contains filtered or unexported fields
}

func New

func New(config *Config) (*Manager, error)

New creates a new CgroupManager

func (*Manager) Add

func (m *Manager) Add(pid int) error

Add pid to cgroups

func (*Manager) AddDevice

func (m *Manager) AddDevice(device string) error

AddDevice adds a device to the device cgroup

func (*Manager) Apply

func (m *Manager) Apply() error

Apply constraints

func (*Manager) Destroy

func (m *Manager) Destroy() error

func (*Manager) GetCgroups

func (m *Manager) GetCgroups() (*configs.Cgroup, error)

func (*Manager) GetPaths

func (m *Manager) GetPaths() map[string]string

func (*Manager) RemoveDevice

func (m *Manager) RemoveDevice(device string) error

RemoceDevice removed a device from the device cgroup

func (*Manager) SetCPUSet

func (m *Manager) SetCPUSet(cpuset, memset string) error