docker

package

v0.99.32 Latest Latest Go to latest Published: Jul 6, 2017 License: BSD-3-Clause Imports: 13 Imported by: 0

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Valid go.mod file
Redistributable license
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Stable version
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Repository

github.com/stackvista/stackstate-process-agent

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Documentation ¶

Index ¶

Variables
func CgroupsForPids(pids []int32) (map[string]*ContainerCgroup, error)
func ContainersByPID(pids []int32) (map[int32]*Container, error)
type CgroupMemStat
type CgroupTimesStat
type Container
- func GetDockerContainers() ([]*Container, error)
type ContainerCgroup
- func CGroupForPid(pid int32) (*ContainerCgroup, error)

Constants ¶

This section is empty.

Variables ¶

View Source

var (
	ErrDockerNotAvailable = errors.New("docker not available")
)

View Source

var (
	ErrMissingTarget = errors.New("Missing cgroup target")
)

Functions ¶

func CgroupsForPids ¶

func CgroupsForPids(pids []int32) (map[string]*ContainerCgroup, error)

CgroupsForPids returns ContainerCgroup for every container that's in a Cgroup. We return as a map[containerID]Cgroup for easy look-up.

func ContainersByPID ¶

func ContainersByPID(pids []int32) (map[int32]*Container, error)

Generates a mapping of PIDs to container metadata. Optimized to limit the number of syscalls for each PID for just enough to get the data we need.

Types ¶

type CgroupMemStat ¶

type CgroupMemStat struct {
	ContainerID             string
	Cache                   uint64
	RSS                     uint64
	RSSHuge                 uint64
	MappedFile              uint64
	Pgpgin                  uint64
	Pgpgout                 uint64
	Pgfault                 uint64
	Pgmajfault              uint64
	InactiveAnon            uint64
	ActiveAnon              uint64
	InactiveFile            uint64
	ActiveFile              uint64
	Unevictable             uint64
	HierarchicalMemoryLimit uint64
	TotalCache              uint64
	TotalRSS                uint64
	TotalRSSHuge            uint64
	TotalMappedFile         uint64
	TotalPgpgIn             uint64
	TotalPgpgOut            uint64
	TotalPgFault            uint64
	TotalPgMajFault         uint64
	TotalInactiveAnon       uint64
	TotalActiveAnon         uint64
	TotalInactiveFile       uint64
	TotalActiveFile         uint64
	TotalUnevictable        uint64
	MemUsageInBytes         uint64
	MemMaxUsageInBytes      uint64
	MemLimitInBytes         uint64
	MemFailCnt              uint64
}

type CgroupTimesStat ¶

type CgroupTimesStat struct {
	ContainerID string
	System      float64
	User        float64
}

type Container ¶

type Container struct {
	Type     string
	ID       string
	Name     string
	Image    string
	ImageID  string
	Status   string
	CPULimit float64
	MemLimit uint64
}

func GetDockerContainers ¶

func GetDockerContainers() ([]*Container, error)

GetDockerContainers returns a list of Docker info for active containers using the Docker API. This requires certain permission.

type ContainerCgroup ¶

type ContainerCgroup struct {
	ContainerID string
	Pids        []int32
	Paths       map[string]string
	Mounts      map[string]string
}

func CGroupForPid ¶

func CGroupForPid(pid int32) (*ContainerCgroup, error)

CGroup for pid returns a ContainerCgroup for a single pid

func (ContainerCgroup) CPU ¶

func (c ContainerCgroup) CPU() (*CgroupTimesStat, error)

CPU returns the CPU status for this cgroup instance

func (ContainerCgroup) CPULimit ¶

func (c ContainerCgroup) CPULimit() (float64, error)

CPULimit would show CPU limit for this cgroup. It does so by checking the cpu period and cpu quota config if a user does this:

docker run --cpus='0.5' ubuntu:latest

we should return 50% for that container

func (ContainerCgroup) Mem ¶

func (c ContainerCgroup) Mem() (*CgroupMemStat, error)

Source Files ¶

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