container

Documentation

Index

• func IsPreDefinedNetwork(network string) bool
• type Config
• type DeviceMapping
• type HostConfig
• type IpcMode
  • func (n IpcMode) Container() string
  • func (n IpcMode) IsContainer() bool
  • func (n IpcMode) IsHost() bool
  • func (n IpcMode) IsPrivate() bool
  • func (n IpcMode) Valid() bool
• type IsolationLevel
  • func (i IsolationLevel) IsDefault() bool
  • func (i IsolationLevel) IsValid() bool
• type LogConfig
• type NetworkMode
  • func (n NetworkMode) ConnectedContainer() string
  • func (n NetworkMode) IsBridge() bool
  • func (n NetworkMode) IsContainer() bool
  • func (n NetworkMode) IsDefault() bool
  • func (n NetworkMode) IsHost() bool
  • func (n NetworkMode) IsNone() bool
  • func (n NetworkMode) IsPrivate() bool
  • func (n NetworkMode) IsUserDefined() bool
  • func (n NetworkMode) NetworkName() string
  • func (n NetworkMode) UserDefined() string
• type PidMode
  • func (n PidMode) IsHost() bool
  • func (n PidMode) IsPrivate() bool
  • func (n PidMode) Valid() bool
• type Resources
• type RestartPolicy
  • func (rp *RestartPolicy) IsAlways() bool
  • func (rp *RestartPolicy) IsNone() bool
  • func (rp *RestartPolicy) IsOnFailure() bool
  • func (rp *RestartPolicy) IsUnlessStopped() bool
• type UTSMode
  • func (n UTSMode) IsHost() bool
  • func (n UTSMode) IsPrivate() bool
  • func (n UTSMode) Valid() bool
• type UpdateConfig

Functions

func IsPreDefinedNetwork

func IsPreDefinedNetwork(network string) bool

IsPreDefinedNetwork indicates if a network is predefined by the daemon

Types

type Config

type Config struct {
	Hostname        string                // Hostname
	Domainname      string                // Domainname
	User            string                // User that will run the command(s) inside the container
	AttachStdin     bool                  // Attach the standard input, makes possible user interaction
	AttachStdout    bool                  // Attach the standard output
	AttachStderr    bool                  // Attach the standard error
	ExposedPorts    map[nat.Port]struct{} `json:",omitempty"` // List of exposed ports
	PublishService  string                `json:",omitempty"` // Name of the network service exposed by the container
	Tty             bool                  // Attach standard streams to a tty, including stdin if it is not closed.
	OpenStdin       bool                  // Open stdin
	StdinOnce       bool                  // If true, close stdin after the 1 attached client disconnects.
	Env             []string              // List of environment variable to set in the container
	Cmd             *strslice.StrSlice    // Command to run when starting the container
	ArgsEscaped     bool                  `json:",omitempty"` // True if command is already escaped (Windows specific)
	Image           string                // Name of the image as it was passed by the operator (eg. could be symbolic)
	Volumes         map[string]struct{}   // List of volumes (mounts) used for the container
	WorkingDir      string                // Current directory (PWD) in the command will be launched
	Entrypoint      *strslice.StrSlice    // Entrypoint to run when starting the container
	NetworkDisabled bool                  `json:",omitempty"` // Is network disabled
	MacAddress      string                `json:",omitempty"` // Mac Address of the container
	OnBuild         []string              // ONBUILD metadata that were defined on the image Dockerfile
	Labels          map[string]string     // List of labels set to this container
	StopSignal      string                `json:",omitempty"` // Signal to stop a container
}

Config contains the configuration data about a container. It should hold only portable information about the container. Here, "portable" means "independent from the host we are running on". Non-portable information *should* appear in HostConfig. All fields added to this struct must be marked `omitempty` to keep getting predictable hashes from the old `v1Compatibility` configuration.

type DeviceMapping

type DeviceMapping struct {
	PathOnHost        string
	PathInContainer   string
	CgroupPermissions string
}

DeviceMapping represents the device mapping between the host and the container.

type HostConfig

type HostConfig struct {
	// Applicable to all platforms
	Binds           []string      // List of volume bindings for this container
	ContainerIDFile string        // File (path) where the containerId is written
	LogConfig       LogConfig     // Configuration of the logs for this container
	NetworkMode     NetworkMode   // Network mode to use for the container
	PortBindings    nat.PortMap   // Port mapping between the exposed port (container) and the host
	RestartPolicy   RestartPolicy // Restart policy to be used for the container
	VolumeDriver    string        // Name of the volume driver used to mount volumes
	VolumesFrom     []string      // List of volumes to take from other container

	// Applicable to UNIX platforms
	CapAdd          *strslice.StrSlice // List of kernel capabilities to add to the container
	CapDrop         *strslice.StrSlice // List of kernel capabilities to remove from the container
	DNS             []string           `json:"Dns"`        // List of DNS server to lookup
	DNSOptions      []string           `json:"DnsOptions"` // List of DNSOption to look for
	DNSSearch       []string           `json:"DnsSearch"`  // List of DNSSearch to look for
	ExtraHosts      []string           // List of extra hosts
	GroupAdd        []string           // List of additional groups that the container process will run as
	IpcMode         IpcMode            // IPC namespace to use for the container
	Links           []string           // List of links (in the name:alias form)
	OomScoreAdj     int                // Container preference for OOM-killing
	PidMode         PidMode            // PID namespace to use for the container
	Privileged      bool               // Is the container in privileged mode
	PublishAllPorts bool               // Should docker publish all exposed port for the container
	ReadonlyRootfs  bool               // Is the container root filesystem in read-only
	SecurityOpt     []string           // List of string values to customize labels for MLS systems, such as SELinux.
	StorageOpt      []string           // Graph storage options per container
	Tmpfs           map[string]string  `json:",omitempty"` // List of tmpfs (mounts) used for the container
	UTSMode         UTSMode            // UTS namespace to use for the container
	ShmSize         int64              // Total shm memory usage

	// Applicable to Windows
	ConsoleSize [2]int         // Initial console size
	Isolation   IsolationLevel // Isolation level of the container (eg default, hyperv)

	// Contains container's resources (cgroups, ulimits)
	Resources
}

HostConfig the non-portable Config structure of a container. Here, "non-portable" means "dependent of the host we are running on". Portable information *should* appear in Config.

type IpcMode

type IpcMode string

IpcMode represents the container ipc stack.

func (IpcMode) Container

func (n IpcMode) Container() string

Container returns the name of the container ipc stack is going to be used.

func (IpcMode) IsContainer

func (n IpcMode) IsContainer() bool

IsContainer indicates whether the container uses a container's ipc stack.

func (IpcMode) IsHost

func (n IpcMode) IsHost() bool

IsHost indicates whether the container uses the host's ipc stack.

func (IpcMode) IsPrivate

func (n IpcMode) IsPrivate() bool

IsPrivate indicates whether the container uses it's private ipc stack.

func (IpcMode) Valid

func (n IpcMode) Valid() bool

Valid indicates whether the ipc stack is valid.

type IsolationLevel

type IsolationLevel string

IsolationLevel represents the isolation level of a container. The supported values are platform specific

func (IsolationLevel) IsDefault

func (i IsolationLevel) IsDefault() bool

IsDefault indicates the default isolation level of a container. On Linux this is the native driver. On Windows, this is a Windows Server Container.

func (IsolationLevel) IsValid

func (i IsolationLevel) IsValid() bool

IsValid indicates is an isolation level is valid

type LogConfig

type LogConfig struct {
	Type   string
	Config map[string]string
}

LogConfig represents the logging configuration of the container.

type NetworkMode

type NetworkMode string

NetworkMode represents the container network stack.

func (NetworkMode) ConnectedContainer

func (n NetworkMode) ConnectedContainer() string

ConnectedContainer is the id of the container which network this container is connected to.

func (NetworkMode) IsBridge

func (n NetworkMode) IsBridge() bool

IsBridge indicates whether container uses the bridge network stack

func (NetworkMode) IsContainer

func (n NetworkMode) IsContainer() bool

IsContainer indicates whether container uses a container network stack.

func (NetworkMode) IsDefault

func (n NetworkMode) IsDefault() bool

IsDefault indicates whether container uses the default network stack.

func (NetworkMode) IsHost

func (n NetworkMode) IsHost() bool

IsHost indicates whether container uses the host network stack.

func (NetworkMode) IsNone

func (n NetworkMode) IsNone() bool

IsNone indicates whether container isn't using a network stack.

func (NetworkMode) IsPrivate

func (n NetworkMode) IsPrivate() bool

IsPrivate indicates whether container uses it's private network stack.

func (NetworkMode) IsUserDefined

func (n NetworkMode) IsUserDefined() bool

IsUserDefined indicates user-created network

func (NetworkMode) NetworkName

func (n NetworkMode) NetworkName() string

NetworkName returns the name of the network stack.

func (NetworkMode) UserDefined

func (n NetworkMode) UserDefined() string

UserDefined indicates user-created network

type PidMode

type PidMode string

PidMode represents the pid stack of the container.

func (PidMode) IsHost

func (n PidMode) IsHost() bool

IsHost indicates whether the container uses the host's pid stack.

func (PidMode) IsPrivate

func (n PidMode) IsPrivate() bool

IsPrivate indicates whether the container uses it's private pid stack.

func (PidMode) Valid

func (n PidMode) Valid() bool

Valid indicates whether the pid stack is valid.

type Resources

type Resources struct {
	// Applicable to all platforms
	CPUShares int64 `json:"CpuShares"` // CPU shares (relative weight vs. other containers)

	// Applicable to UNIX platforms
	CgroupParent         string // Parent cgroup.
	BlkioWeight          uint16 // Block IO weight (relative weight vs. other containers)
	BlkioWeightDevice    []*blkiodev.WeightDevice
	BlkioDeviceReadBps   []*blkiodev.ThrottleDevice
	BlkioDeviceWriteBps  []*blkiodev.ThrottleDevice
	BlkioDeviceReadIOps  []*blkiodev.ThrottleDevice
	BlkioDeviceWriteIOps []*blkiodev.ThrottleDevice
	CPUPeriod            int64           `json:"CpuPeriod"` // CPU CFS (Completely Fair Scheduler) period
	CPUQuota             int64           `json:"CpuQuota"`  // CPU CFS (Completely Fair Scheduler) quota
	CpusetCpus           string          // CpusetCpus 0-2, 0,1
	CpusetMems           string          // CpusetMems 0-2, 0,1
	Devices              []DeviceMapping // List of devices to map inside the container
	KernelMemory         int64           // Kernel memory limit (in bytes)
	Memory               int64           // Memory limit (in bytes)
	MemoryReservation    int64           // Memory soft limit (in bytes)
	MemorySwap           int64           // Total memory usage (memory + swap); set `-1` to disable swap
	MemorySwappiness     *int64          // Tuning container memory swappiness behaviour
	OomKillDisable       bool            // Whether to disable OOM Killer or not
	PidsLimit            int64           // Setting pids limit for a container
	Ulimits              []*units.Ulimit // List of ulimits to be set in the container
}

Resources contains container's resources (cgroups config, ulimits...)

type RestartPolicy

type RestartPolicy struct {
	Name              string
	MaximumRetryCount int
}

RestartPolicy represents the restart policies of the container.

func (*RestartPolicy) IsAlways

func (rp *RestartPolicy) IsAlways() bool

IsAlways indicates whether the container has the "always" restart policy. This means the container will automatically restart regardless of the exit status.

func (*RestartPolicy) IsNone

func (rp *RestartPolicy) IsNone() bool

IsNone indicates whether the container has the "no" restart policy. This means the container will not automatically restart when exiting.

func (*RestartPolicy) IsOnFailure

func (rp *RestartPolicy) IsOnFailure() bool

IsOnFailure indicates whether the container has the "on-failure" restart policy. This means the contain will automatically restart of exiting with a non-zero exit status.

func (*RestartPolicy) IsUnlessStopped

func (rp *RestartPolicy) IsUnlessStopped() bool

IsUnlessStopped indicates whether the container has the "unless-stopped" restart policy. This means the container will automatically restart unless user has put it to stopped state.

type UTSMode

type UTSMode string

UTSMode represents the UTS namespace of the container.

func (UTSMode) IsHost

func (n UTSMode) IsHost() bool

IsHost indicates whether the container uses the host's UTS namespace.

func (UTSMode) IsPrivate

func (n UTSMode) IsPrivate() bool

IsPrivate indicates whether the container uses it's private UTS namespace.

func (UTSMode) Valid

func (n UTSMode) Valid() bool

Valid indicates whether the UTS namespace is valid.

type UpdateConfig

type UpdateConfig struct {
	// Contains container's resources (cgroups, ulimits)
	Resources
}

UpdateConfig holds the mutable attributes of a Container. Those attributes can be updated at runtime.