daemon

package
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 Go to latest Published: Jul 19, 2024 License: Apache-2.0 Imports: 138 Imported by: 0

Documentation

Overview

Package daemon exposes the functions that occur on the host server that the Docker daemon is running.

In implementing the various functions of the daemon, there is often a method-specific struct for configuring the runtime behavior.

Index

Constants

This section is empty.

Variables

View Source 
var (
	// DefaultRuntimeBinary is the default runtime to be used by
	// containerd if none is specified
	DefaultRuntimeBinary = "docker-runc"
)
View Source 
var ErrExtractPointNotDirectory = errors.New("extraction point is not a directory")

ErrExtractPointNotDirectory is used to convey that the operation to extract a tar archive to a directory in a container has failed because the specified path does not refer to a directory.

View Source 
var (
	// ErrRootFSReadOnly is returned when a container
	// rootfs is marked readonly.
	ErrRootFSReadOnly = errors.New("container rootfs is marked read-only")
)
View Source 
var (
	// ErrVolumeReadonly is used to signal an error when trying to copy data into
	// a volume mount that is not writable.
	ErrVolumeReadonly = errors.New("mounted volume is marked read-only")
)

Functions

func ModifyRootKeyLimit 

func ModifyRootKeyLimit() error

ModifyRootKeyLimit checks to see if the root key limit is set to at least 1000000 and changes it to that limit along with the maxbytes allocated to the keys at a 25 to 1 multiplier.

func ReloadConfiguration 

func ReloadConfiguration(configFile string, flags *flag.FlagSet, reload func(*Config)) error

ReloadConfiguration reads the configuration in the host and reloads the daemon and server.

func UsingSystemd 

func UsingSystemd(config *Config) bool

UsingSystemd returns true if cli option includes native.cgroupdriver=systemd

func ValidateConfiguration 

func ValidateConfiguration(config *Config) error

ValidateConfiguration validates some specific configs. such as config.DNS, config.Labels, config.DNSSearch, as well as config.MaxConcurrentDownloads, config.MaxConcurrentUploads.

func VerifyCgroupDriver 

func VerifyCgroupDriver(config *Config) error

VerifyCgroupDriver validates native.cgroupdriver

Types

type CommonConfig 

type CommonConfig struct {
	AuthorizationPlugins []string            `json:"authorization-plugins,omitempty"` // AuthorizationPlugins holds list of authorization plugins
	AutoRestart          bool                `json:"-"`
	Context              map[string][]string `json:"-"`
	DisableBridge        bool                `json:"-"`
	DNS                  []string            `json:"dns,omitempty"`
	DNSOptions           []string            `json:"dns-opts,omitempty"`
	DNSSearch            []string            `json:"dns-search,omitempty"`
	ExecOptions          []string            `json:"exec-opts,omitempty"`
	GraphDriver          string              `json:"storage-driver,omitempty"`
	GraphOptions         []string            `json:"storage-opts,omitempty"`
	Labels               []string            `json:"labels,omitempty"`
	Mtu                  int                 `json:"mtu,omitempty"`
	Pidfile              string              `json:"pidfile,omitempty"`
	RawLogs              bool                `json:"raw-logs,omitempty"`
	Root                 string              `json:"graph,omitempty"`
	SocketGroup          string              `json:"group,omitempty"`
	TrustKeyPath         string              `json:"-"`
	CorsHeaders          string              `json:"api-cors-header,omitempty"`
	EnableCors           bool                `json:"api-enable-cors,omitempty"`
	LiveRestore          bool                `json:"live-restore,omitempty"`

	// ClusterStore is the storage backend used for the cluster information. It is used by both
	// multihost networking (to store networks and endpoints information) and by the node discovery
	// mechanism.
	ClusterStore string `json:"cluster-store,omitempty"`

	// ClusterOpts is used to pass options to the discovery package for tuning libkv settings, such
	// as TLS configuration settings.
	ClusterOpts map[string]string `json:"cluster-store-opts,omitempty"`

	// ClusterAdvertise is the network endpoint that the Engine advertises for the purpose of node
	// discovery. This should be a 'host:port' combination on which that daemon instance is
	// reachable by other hosts.
	ClusterAdvertise string `json:"cluster-advertise,omitempty"`

	// MaxConcurrentDownloads is the maximum number of downloads that
	// may take place at a time for each pull.
	MaxConcurrentDownloads *int `json:"max-concurrent-downloads,omitempty"`

	// MaxConcurrentUploads is the maximum number of uploads that
	// may take place at a time for each push.
	MaxConcurrentUploads *int `json:"max-concurrent-uploads,omitempty"`

	Debug     bool     `json:"debug,omitempty"`
	Hosts     []string `json:"hosts,omitempty"`
	LogLevel  string   `json:"log-level,omitempty"`
	TLS       bool     `json:"tls,omitempty"`
	TLSVerify bool     `json:"tlsverify,omitempty"`

	// Embedded structs that allow config
	// deserialization without the full struct.
	CommonTLSOptions

	// SwarmDefaultAdvertiseAddr is the default host/IP or network interface
	// to use if a wildcard address is specified in the ListenAddr value
	// given to the /swarm/init endpoint and no advertise address is
	// specified.
	SwarmDefaultAdvertiseAddr string `json:"swarm-default-advertise-addr"`

	LogConfig

	registry.ServiceOptions
	// contains filtered or unexported fields
}

CommonConfig defines the configuration of a docker daemon which is common across platforms. It includes json tags to deserialize configuration from a file using the same names that the flags in the command line use.

type CommonTLSOptions 

type CommonTLSOptions struct {
	CAFile   string `json:"tlscacert,omitempty"`
	CertFile string `json:"tlscert,omitempty"`
	KeyFile  string `json:"tlskey,omitempty"`
}

CommonTLSOptions defines TLS configuration for the daemon server. It includes json tags to deserialize configuration from a file using the same names that the flags in the command line use.

type Config 

type Config struct {
	CommonConfig

	// Fields below here are platform specific.
	CgroupParent         string                   `json:"cgroup-parent,omitempty"`
	ContainerdAddr       string                   `json:"containerd,omitempty"`
	EnableSelinuxSupport bool                     `json:"selinux-enabled,omitempty"`
	ExecRoot             string                   `json:"exec-root,omitempty"`
	RemappedRoot         string                   `json:"userns-remap,omitempty"`
	Ulimits              map[string]*units.Ulimit `json:"default-ulimits,omitempty"`
	Runtimes             map[string]types.Runtime `json:"runtimes,omitempty"`
	DefaultRuntime       string                   `json:"default-runtime,omitempty"`
	OOMScoreAdjust       int                      `json:"oom-score-adjust,omitempty"`
}

Config defines the configuration of a docker daemon. It includes json tags to deserialize configuration from a file using the same names that the flags in the command line uses.

func MergeDaemonConfigurations 

func MergeDaemonConfigurations(flagsConfig *Config, flags *flag.FlagSet, configFile string) (*Config, error)

MergeDaemonConfigurations reads a configuration file, loads the file configuration in an isolated structure, and merges the configuration provided from flags on top if there are no conflicts.

func (*Config) GetAllRuntimes 

func (config *Config) GetAllRuntimes() map[string]types.Runtime

GetAllRuntimes returns a copy of the runtimes map

func (*Config) GetDefaultRuntimeName 

func (config *Config) GetDefaultRuntimeName() string

GetDefaultRuntimeName returns the current default runtime

func (*Config) GetExecRoot 

func (config *Config) GetExecRoot() string

GetExecRoot returns the user configured Exec-root

func (*Config) GetRuntime 

func (config *Config) GetRuntime(name string) *types.Runtime

GetRuntime returns the runtime path and arguments for a given runtime name

func (*Config) InstallCommonFlags 

func (config *Config) InstallCommonFlags(cmd *flag.FlagSet, usageFn func(string) string)

InstallCommonFlags adds command-line options to the top-level flag parser for the current process. Subsequent calls to `flag.Parse` will populate config with values parsed from the command-line.

func (*Config) InstallFlags 

func (config *Config) InstallFlags(cmd *flag.FlagSet, usageFn func(string) string)

InstallFlags adds command-line options to the top-level flag parser for the current process. Subsequent calls to `flag.Parse` will populate config with values parsed from the command-line.

func (*Config) IsValueSet 

func (config *Config) IsValueSet(name string) bool

IsValueSet returns true if a configuration value was explicitly set in the configuration file.

type Daemon 

type Daemon struct {
	ID string

	RegistryService registry.Service
	EventsService   *events.Events
	// contains filtered or unexported fields
}

Daemon holds information about the Docker daemon.

func NewDaemon 

func NewDaemon(config *Config, registryService registry.Service, containerdRemote libcontainerd.Remote) (daemon *Daemon, err error)

NewDaemon sets up everything for the daemon to be able to service requests from the webserver.

func (*Daemon) AttachStreams 

func (daemon *Daemon) AttachStreams(id string, iop libcontainerd.IOPipe) error

AttachStreams is called by libcontainerd to connect the stdio.

func (*Daemon) AuthenticateToRegistry 

func (daemon *Daemon) AuthenticateToRegistry(ctx context.Context, authConfig *types.AuthConfig) (string, string, error)

AuthenticateToRegistry checks the validity of credentials in authConfig

func (*Daemon) Cleanup 

func (daemon *Daemon) Cleanup(container *container.Container)

Cleanup releases any network resources allocated to the container along with any rules around how containers are linked together. It also unmounts the container's root filesystem.

func (*Daemon) Commit 

func (daemon *Daemon) Commit(name string, c *backend.ContainerCommitConfig) (string, error)

Commit creates a new filesystem image from the current state of a container. The image can optionally be tagged into a repository.

func (*Daemon) ConnectContainerToNetwork 

func (daemon *Daemon) ConnectContainerToNetwork(containerName, networkName string, endpointConfig *network.EndpointSettings) error

ConnectContainerToNetwork connects the given container to the given network. If either cannot be found, an err is returned. If the network cannot be set up, an err is returned.

func (*Daemon) ConnectToNetwork 

func (daemon *Daemon) ConnectToNetwork(container *container.Container, idOrName string, endpointConfig *networktypes.EndpointSettings) error

ConnectToNetwork connects a container to a network

func (*Daemon) ContainerArchivePath 

func (daemon *Daemon) ContainerArchivePath(name string, path string) (content io.ReadCloser, stat *types.ContainerPathStat, err error)

ContainerArchivePath creates an archive of the filesystem resource at the specified path in the container identified by the given name. Returns a tar archive of the resource and whether it was a directory or a single file.

func (*Daemon) ContainerAttach 

func (daemon *Daemon) ContainerAttach(prefixOrName string, c *backend.ContainerAttachConfig) error

ContainerAttach attaches to logs according to the config passed in. See ContainerAttachConfig.

func (*Daemon) ContainerAttachRaw 

func (daemon *Daemon) ContainerAttachRaw(prefixOrName string, stdin io.ReadCloser, stdout, stderr io.Writer, stream bool) error

ContainerAttachRaw attaches the provided streams to the container's stdio

func (*Daemon) ContainerChanges 

func (daemon *Daemon) ContainerChanges(name string) ([]archive.Change, error)

ContainerChanges returns a list of container fs changes

func (*Daemon) ContainerCopy 

func (daemon *Daemon) ContainerCopy(name string, res string) (io.ReadCloser, error)

ContainerCopy performs a deprecated operation of archiving the resource at the specified path in the container identified by the given name.

func (*Daemon) ContainerCreate 

func (daemon *Daemon) ContainerCreate(params types.ContainerCreateConfig, validateHostname bool) (types.ContainerCreateResponse, error)

ContainerCreate creates a regular container

func (*Daemon) ContainerExecCreate 

func (d *Daemon) ContainerExecCreate(name string, config *types.ExecConfig) (string, error)

ContainerExecCreate sets up an exec in a running container.

func (*Daemon) ContainerExecInspect 

func (daemon *Daemon) ContainerExecInspect(id string) (*backend.ExecInspect, error)

ContainerExecInspect returns low-level information about the exec command. An error is returned if the exec cannot be found.

func (*Daemon) ContainerExecResize 

func (daemon *Daemon) ContainerExecResize(name string, height, width int) error

ContainerExecResize changes the size of the TTY of the process running in the exec with the given name to the given height and width.

func (*Daemon) ContainerExecStart 

func (d *Daemon) ContainerExecStart(ctx context.Context, name string, stdin io.ReadCloser, stdout io.Writer, stderr io.Writer) (err error)

ContainerExecStart starts a previously set up exec instance. The std streams are set up. If ctx is cancelled, the process is terminated.

func (*Daemon) ContainerExport 

func (daemon *Daemon) ContainerExport(name string, out io.Writer) error

ContainerExport writes the contents of the container to the given writer. An error is returned if the container cannot be found.

func (*Daemon) ContainerExtractToDir 

func (daemon *Daemon) ContainerExtractToDir(name, path string, noOverwriteDirNonDir bool, content io.Reader) error

ContainerExtractToDir extracts the given archive to the specified location in the filesystem of the container identified by the given name. The given path must be of a directory in the container. If it is not, the error will be ErrExtractPointNotDirectory. If noOverwriteDirNonDir is true then it will be an error if unpacking the given content would cause an existing directory to be replaced with a non-directory and vice versa.

func (*Daemon) ContainerInspect 

func (daemon *Daemon) ContainerInspect(name string, size bool, version string) (interface{}, error)

ContainerInspect returns low-level information about a container. Returns an error if the container cannot be found, or if there is an error getting the data.

func (*Daemon) ContainerInspectCurrent 

func (daemon *Daemon) ContainerInspectCurrent(name string, size bool) (*types.ContainerJSON, error)

ContainerInspectCurrent returns low-level information about a container in a most recent api version.

func (*Daemon) ContainerKill 

func (daemon *Daemon) ContainerKill(name string, sig uint64) error

ContainerKill sends signal to the container If no signal is given (sig 0), then Kill with SIGKILL and wait for the container to exit. If a signal is given, then just send it to the container and return.

func (*Daemon) ContainerLogs 

func (daemon *Daemon) ContainerLogs(ctx context.Context, containerName string, config *backend.ContainerLogsConfig, started chan struct{}) error

ContainerLogs hooks up a container's stdout and stderr streams configured with the given struct.

func (*Daemon) ContainerPause 

func (daemon *Daemon) ContainerPause(name string) error

ContainerPause pauses a container

func (*Daemon) ContainerRename 

func (daemon *Daemon) ContainerRename(oldName, newName string) error

ContainerRename changes the name of a container, using the oldName to find the container. An error is returned if newName is already reserved.

func (*Daemon) ContainerResize 

func (daemon *Daemon) ContainerResize(name string, height, width int) error

ContainerResize changes the size of the TTY of the process running in the container with the given name to the given height and width.

func (*Daemon) ContainerRestart 

func (daemon *Daemon) ContainerRestart(name string, seconds int) error

ContainerRestart stops and starts a container. It attempts to gracefully stop the container within the given timeout, forcefully stopping it if the timeout is exceeded. If given a negative timeout, ContainerRestart will wait forever until a graceful stop. Returns an error if the container cannot be found, or if there is an underlying error at any stage of the restart.

func (*Daemon) ContainerRm 

func (daemon *Daemon) ContainerRm(name string, config *types.ContainerRmConfig) error

ContainerRm removes the container id from the filesystem. An error is returned if the container is not found, or if the remove fails. If the remove succeeds, the container name is released, and network links are removed.

func (*Daemon) ContainerStart 

func (daemon *Daemon) ContainerStart(name string, hostConfig *containertypes.HostConfig, validateHostname bool) error

ContainerStart starts a container.

func (*Daemon) ContainerStatPath 

func (daemon *Daemon) ContainerStatPath(name string, path string) (stat *types.ContainerPathStat, err error)

ContainerStatPath stats the filesystem resource at the specified path in the container identified by the given name.

func (*Daemon) ContainerStats 

func (daemon *Daemon) ContainerStats(ctx context.Context, prefixOrName string, config *backend.ContainerStatsConfig) error

ContainerStats writes information about the container to the stream given in the config object.

func (*Daemon) ContainerStop 

func (daemon *Daemon) ContainerStop(name string, seconds int) error

ContainerStop looks for the given container and terminates it, waiting the given number of seconds before forcefully killing the container. If a negative number of seconds is given, ContainerStop will wait for a graceful termination. An error is returned if the container is not found, is already stopped, or if there is a problem stopping the container.

func (*Daemon) ContainerTop 

func (daemon *Daemon) ContainerTop(name string, psArgs string) (*types.ContainerProcessList, error)

ContainerTop lists the processes running inside of the given container by calling ps with the given args, or with the flags "-ef" if no args are given. An error is returned if the container is not found, or is not running, or if there are any problems running ps, or parsing the output.

func (*Daemon) ContainerUnpause 

func (daemon *Daemon) ContainerUnpause(name string) error

ContainerUnpause unpauses a container

func (*Daemon) ContainerUpdate 

func (daemon *Daemon) ContainerUpdate(name string, hostConfig *container.HostConfig, validateHostname bool) ([]string, error)

ContainerUpdate updates configuration of the container

func (*Daemon) ContainerUpdateCmdOnBuild 

func (daemon *Daemon) ContainerUpdateCmdOnBuild(cID string, cmd []string) error

ContainerUpdateCmdOnBuild updates Path and Args for the container with ID cID.

func (*Daemon) ContainerWait 

func (daemon *Daemon) ContainerWait(name string, timeout time.Duration) (int, error)

ContainerWait stops processing until the given container is stopped. If the container is not found, an error is returned. On a successful stop, the exit code of the container is returned. On a timeout, an error is returned. If you want to wait forever, supply a negative duration for the timeout.

func (*Daemon) ContainerWaitWithContext 

func (daemon *Daemon) ContainerWaitWithContext(ctx context.Context, name string) error

ContainerWaitWithContext returns a channel where exit code is sent when container stops. Channel can be cancelled with a context.

func (*Daemon) Containers 

func (daemon *Daemon) Containers(config *types.ContainerListOptions) ([]*types.Container, error)

Containers returns the list of containers to show given the user's filtering.

func (*Daemon) CopyOnBuild 

func (daemon *Daemon) CopyOnBuild(cID string, destPath string, src builder.FileInfo, decompress bool) error

CopyOnBuild copies/extracts a source FileInfo to a destination path inside a container specified by a container object. TODO: make sure callers don't unnecessarily convert destPath with filepath.FromSlash (Copy does it already). CopyOnBuild should take in abstract paths (with slashes) and the implementation should convert it to OS-specific paths.

func (*Daemon) CreateManagedContainer 

func (daemon *Daemon) CreateManagedContainer(params types.ContainerCreateConfig, validateHostname bool) (types.ContainerCreateResponse, error)

CreateManagedContainer creates a container that is managed by a Service

func (*Daemon) CreateManagedNetwork 

func (daemon *Daemon) CreateManagedNetwork(create clustertypes.NetworkCreateRequest) error

CreateManagedNetwork creates an agent network.

func (*Daemon) CreateNetwork 

func (daemon *Daemon) CreateNetwork(create types.NetworkCreateRequest) (*types.NetworkCreateResponse, error)

CreateNetwork creates a network with the given name, driver and other optional parameters

func (*Daemon) DeleteManagedNetwork 

func (daemon *Daemon) DeleteManagedNetwork(networkID string) error

DeleteManagedNetwork deletes an agent network.

func (*Daemon) DeleteNetwork 

func (daemon *Daemon) DeleteNetwork(networkID string) error

DeleteNetwork destroys a network unless it's one of docker's predefined networks.

func (*Daemon) DisconnectContainerFromNetwork 

func (daemon *Daemon) DisconnectContainerFromNetwork(containerName string, network libnetwork.Network, force bool) error

DisconnectContainerFromNetwork disconnects the given container from the given network. If either cannot be found, an err is returned.

func (*Daemon) DisconnectFromNetwork 

func (daemon *Daemon) DisconnectFromNetwork(container *container.Container, n libnetwork.Network, force bool) error

DisconnectFromNetwork disconnects container from network n.

func (*Daemon) ExecExists 

func (d *Daemon) ExecExists(name string) (bool, error)

ExecExists looks up the exec instance and returns a bool if it exists or not. It will also return the error produced by `getConfig`

func (*Daemon) Exists 

func (daemon *Daemon) Exists(id string) bool

Exists returns a true if a container of the specified ID or name exists, false otherwise.

func (*Daemon) ExportImage 

func (daemon *Daemon) ExportImage(names []string, outStream io.Writer) error

ExportImage exports a list of images to the given output stream. The exported images are archived into a tar when written to the output stream. All images with the given tag and all versions containing the same tag are exported. names is the set of tags to export, and outStream is the writer which the images are written to.

func (*Daemon) FindNetwork 

func (daemon *Daemon) FindNetwork(idName string) (libnetwork.Network, error)

FindNetwork function finds a network for a given string that can represent network name or id

func (*Daemon) ForceEndpointDelete 

func (daemon *Daemon) ForceEndpointDelete(name string, n libnetwork.Network) error

ForceEndpointDelete deletes an endpoing from a network forcefully

func (*Daemon) GetByName 

func (daemon *Daemon) GetByName(name string) (*container.Container, error)

GetByName returns a container given a name.

func (*Daemon) GetCachedImage 

func (daemon *Daemon) GetCachedImage(imgID image.ID, config *containertypes.Config) (*image.Image, error)

GetCachedImage returns the most recent created image that is a child of the image with imgID, that had the same config when it was created. nil is returned if a child cannot be found. An error is returned if the parent image cannot be found.

func (*Daemon) GetCachedImageOnBuild 

func (daemon *Daemon) GetCachedImageOnBuild(imgID string, cfg *containertypes.Config) (string, error)

GetCachedImageOnBuild returns a reference to a cached image whose parent equals `parent` and runconfig equals `cfg`. A cache miss is expected to return an empty ID and a nil error.

func (*Daemon) GetContainer 

func (daemon *Daemon) GetContainer(prefixOrName string) (*container.Container, error)

GetContainer looks for a container using the provided information, which could be one of the following inputs from the caller:

  • A full container ID, which will exact match a container in daemon's list
  • A container name, which will only exact match via the GetByName() function
  • A partial container ID prefix (e.g. short ID) of any length that is unique enough to only return a single container object If none of these searches succeed, an error is returned

func (*Daemon) GetContainerStats 

func (daemon *Daemon) GetContainerStats(container *container.Container) (*types.StatsJSON, error)

GetContainerStats collects all the stats published by a container

func (*Daemon) GetImage 

func (daemon *Daemon) GetImage(refOrID string) (*image.Image, error)

GetImage returns an image corresponding to the image referred to by refOrID.

func (*Daemon) GetImageID 

func (daemon *Daemon) GetImageID(refOrID string) (image.ID, error)

GetImageID returns an image ID corresponding to the image referred to by refOrID.

func (*Daemon) GetImageOnBuild 

func (daemon *Daemon) GetImageOnBuild(name string) (builder.Image, error)

GetImageOnBuild looks up a Docker image referenced by `name`.

func (*Daemon) GetNetworkByID 

func (daemon *Daemon) GetNetworkByID(partialID string) (libnetwork.Network, error)

GetNetworkByID function returns a network whose ID begins with the given prefix. It fails with an error if no matching, or more than one matching, networks are found.

func (*Daemon) GetNetworkByName 

func (daemon *Daemon) GetNetworkByName(name string) (libnetwork.Network, error)

GetNetworkByName function returns a network for a given network name.

func (*Daemon) GetNetworkDriverList 

func (daemon *Daemon) GetNetworkDriverList() map[string]bool

GetNetworkDriverList returns the list of plugins drivers registered for network.

func (*Daemon) GetNetworks 

func (daemon *Daemon) GetNetworks() []libnetwork.Network

GetNetworks returns a list of all networks

func (*Daemon) GetNetworksByID 

func (daemon *Daemon) GetNetworksByID(partialID string) []libnetwork.Network

GetNetworksByID returns a list of networks whose ID partially matches zero or more networks

func (*Daemon) GetRemappedUIDGID 

func (daemon *Daemon) GetRemappedUIDGID() (int, int)

GetRemappedUIDGID returns the current daemon's uid and gid values if user namespaces are in use for this daemon instance. If not this function will return "real" root values of 0, 0.

func (*Daemon) GetUIDGIDMaps 

func (daemon *Daemon) GetUIDGIDMaps() ([]idtools.IDMap, []idtools.IDMap)

GetUIDGIDMaps returns the current daemon's user namespace settings for the full uid and gid maps which will be applied to containers started in this instance.

func (*Daemon) GraphDriverName 

func (daemon *Daemon) GraphDriverName() string

GraphDriverName returns the name of the graph driver used by the layer.Store

func (*Daemon) ImageDelete 

func (daemon *Daemon) ImageDelete(imageRef string, force, prune bool) ([]types.ImageDelete, error)

ImageDelete deletes the image referenced by the given imageRef from this daemon. The given imageRef can be an image ID, ID prefix, or a repository reference (with an optional tag or digest, defaulting to the tag name "latest"). There is differing behavior depending on whether the given imageRef is a repository reference or not.

If the given imageRef is a repository reference then that repository reference will be removed. However, if there exists any containers which were created using the same image reference then the repository reference cannot be removed unless either there are other repository references to the same image or force is true. Following removal of the repository reference, the referenced image itself will attempt to be deleted as described below but quietly, meaning any image delete conflicts will cause the image to not be deleted and the conflict will not be reported.

There may be conflicts preventing deletion of an image and these conflicts are divided into two categories grouped by their severity:

Hard Conflict:

  • a pull or build using the image.
  • any descendant image.
  • any running container using the image.

Soft Conflict:

  • any stopped container using the image.
  • any repository tag or digest references to the image.

The image cannot be removed if there are any hard conflicts and can be removed if there are soft conflicts only if force is true.

If prune is true, ancestor images will each attempt to be deleted quietly, meaning any delete conflicts will cause the image to not be deleted and the conflict will not be reported.

FIXME: remove ImageDelete's dependency on Daemon, then move to the graph package. This would require that we no longer need the daemon to determine whether images are being used by a stopped or running container.

func (*Daemon) ImageHistory 

func (daemon *Daemon) ImageHistory(name string) ([]*types.ImageHistory, error)

ImageHistory returns a slice of ImageHistory structures for the specified image name by walking the image lineage.

func (*Daemon) Images 

func (daemon *Daemon) Images(filterArgs, filter string, all bool) ([]*types.Image, error)

Images returns a filtered list of images. filterArgs is a JSON-encoded set of filter arguments which will be interpreted by api/types/filters. filter is a shell glob string applied to repository names. The argument named all controls whether all images in the graph are filtered, or just the heads.

func (*Daemon) ImportImage 

func (daemon *Daemon) ImportImage(src string, repository, tag string, msg string, inConfig io.ReadCloser, outStream io.Writer, changes []string) error

ImportImage imports an image, getting the archived layer data either from inConfig (if src is "-"), or from a URI specified in src. Progress output is written to outStream. Repository and tag names can optionally be given in the repo and tag arguments, respectively.

func (*Daemon) IsPaused 

func (daemon *Daemon) IsPaused(id string) bool

IsPaused returns a bool indicating if the specified container is paused.

func (*Daemon) IsShuttingDown 

func (daemon *Daemon) IsShuttingDown() bool

IsShuttingDown tells whether the daemon is shutting down or not

func (*Daemon) IsSwarmCompatible 

func (daemon *Daemon) IsSwarmCompatible() error

IsSwarmCompatible verifies if the current daemon configuration is compatible with the swarm mode

func (*Daemon) Kill 

func (daemon *Daemon) Kill(container *container.Container) error

Kill forcefully terminates a container.

func (*Daemon) List 

func (daemon *Daemon) List() []*container.Container

List returns an array of all containers registered in the daemon.

func (*Daemon) ListContainersForNode 

func (daemon *Daemon) ListContainersForNode(nodeID string) []string

ListContainersForNode returns all containerID that match the specified nodeID

func (*Daemon) LoadImage 

func (daemon *Daemon) LoadImage(inTar io.ReadCloser, outStream io.Writer, quiet bool) error

LoadImage uploads a set of images into the repository. This is the complement of ImageExport. The input stream is an uncompressed tar ball containing images and metadata.

func (*Daemon) LogContainerEvent 

func (daemon *Daemon) LogContainerEvent(container *container.Container, action string)

LogContainerEvent generates an event related to a container with only the default attributes.

func (*Daemon) LogContainerEventWithAttributes 

func (daemon *Daemon) LogContainerEventWithAttributes(container *container.Container, action string, attributes map[string]string)

LogContainerEventWithAttributes generates an event related to a container with specific given attributes.

func (*Daemon) LogDaemonEventWithAttributes 

func (daemon *Daemon) LogDaemonEventWithAttributes(action string, attributes map[string]string)

LogDaemonEventWithAttributes generates an event related to the daemon itself with specific given attributes.

func (*Daemon) LogImageEvent 

func (daemon *Daemon) LogImageEvent(imageID, refName, action string)

LogImageEvent generates an event related to an image with only the default attributes.

func (*Daemon) LogImageEventWithAttributes 

func (daemon *Daemon) LogImageEventWithAttributes(imageID, refName, action string, attributes map[string]string)

LogImageEventWithAttributes generates an event related to an image with specific given attributes.

func (*Daemon) LogNetworkEvent 

func (daemon *Daemon) LogNetworkEvent(nw libnetwork.Network, action string)

LogNetworkEvent generates an event related to a network with only the default attributes.

func (*Daemon) LogNetworkEventWithAttributes 

func (daemon *Daemon) LogNetworkEventWithAttributes(nw libnetwork.Network, action string, attributes map[string]string)

LogNetworkEventWithAttributes generates an event related to a network with specific given attributes.

func (*Daemon) LogVolumeEvent 

func (daemon *Daemon) LogVolumeEvent(volumeID, action string, attributes map[string]string)

LogVolumeEvent generates an event related to a volume.

func (*Daemon) LookupImage 

func (daemon *Daemon) LookupImage(name string) (*types.ImageInspect, error)

LookupImage looks up an image by name and returns it as an ImageInspect structure.

func (*Daemon) Map 

func (daemon *Daemon) Map() map[image.ID]*image.Image

Map returns a map of all images in the ImageStore

func (*Daemon) Mount 

func (daemon *Daemon) Mount(container *container.Container) error

Mount sets container.BaseFS (is it not set coming in? why is it unset?)

func (*Daemon) NetworkControllerEnabled 

func (daemon *Daemon) NetworkControllerEnabled() bool

NetworkControllerEnabled checks if the networking stack is enabled. This feature depends on OS primitives and it's disabled in systems like Windows.

func (*Daemon) PullImage 

func (daemon *Daemon) PullImage(ctx context.Context, image, tag string, metaHeaders map[string][]string, authConfig *types.AuthConfig, outStream io.Writer) error

PullImage initiates a pull operation. image is the repository name to pull, and tag may be either empty, or indicate a specific tag to pull.

func (*Daemon) PullOnBuild 

func (daemon *Daemon) PullOnBuild(ctx context.Context, name string, authConfigs map[string]types.AuthConfig, output io.Writer) (builder.Image, error)

PullOnBuild tells Docker to pull image referenced by `name`.

func (*Daemon) PushImage 

func (daemon *Daemon) PushImage(ctx context.Context, image, tag string, metaHeaders map[string][]string, authConfig *types.AuthConfig, outStream io.Writer) error

PushImage initiates a push operation on the repository named localName.

func (*Daemon) Register 

func (daemon *Daemon) Register(c *container.Container) error

Register makes a container object usable by the daemon as <container.ID>

func (*Daemon) Reload 

func (daemon *Daemon) Reload(config *Config) error

Reload reads configuration changes and modifies the daemon according to those changes. These are the settings that Reload changes: - Daemon labels. - Daemon debug log level. - Daemon max concurrent downloads - Daemon max concurrent uploads - Cluster discovery (reconfigure and restart). - Daemon live restore

func (*Daemon) SearchRegistryForImages 

func (daemon *Daemon) SearchRegistryForImages(ctx context.Context, filtersArgs string, term string, limit int,
	authConfig *types.AuthConfig,
	headers map[string][]string) (*registrytypes.SearchResults, error)

SearchRegistryForImages queries the registry for images matching term. authConfig is used to login.

func (*Daemon) SetClusterProvider 

func (daemon *Daemon) SetClusterProvider(clusterProvider cluster.Provider)

SetClusterProvider sets a component for querying the current cluster state.

func (*Daemon) SetNetworkBootstrapKeys 

func (daemon *Daemon) SetNetworkBootstrapKeys(keys []*networktypes.EncryptionKey) error

SetNetworkBootstrapKeys sets the bootstrap keys.

func (*Daemon) SetupIngress 

func (daemon *Daemon) SetupIngress(create clustertypes.NetworkCreateRequest, nodeIP string) error

SetupIngress setups ingress networking.

func (*Daemon) Shutdown 

func (daemon *Daemon) Shutdown() error

Shutdown stops the daemon.

func (*Daemon) Start 

func (daemon *Daemon) Start(container *container.Container) error

Start starts a container

func (*Daemon) StartLogging 

func (daemon *Daemon) StartLogging(container *container.Container) error

StartLogging initializes and starts the container logging stream.

func (*Daemon) StateChanged 

func (daemon *Daemon) StateChanged(id string, e libcontainerd.StateInfo) error

StateChanged updates daemon state changes from containerd

func (*Daemon) SubscribeToEvents 

func (daemon *Daemon) SubscribeToEvents(since, until time.Time, filter filters.Args) ([]events.Message, chan interface{})

SubscribeToEvents returns the currently record of events, a channel to stream new events from, and a function to cancel the stream of events.

func (*Daemon) SystemInfo 

func (daemon *Daemon) SystemInfo() (*types.Info, error)

SystemInfo returns information about the host server the daemon is running on.

func (*Daemon) SystemVersion 

func (daemon *Daemon) SystemVersion() types.Version

SystemVersion returns version information about the daemon.

func (*Daemon) TagImage 

func (daemon *Daemon) TagImage(imageName, repository, tag string) error

TagImage creates the tag specified by newTag, pointing to the image named imageName (alternatively, imageName can also be an image ID).

func (*Daemon) TagImageWithReference 

func (daemon *Daemon) TagImageWithReference(imageID image.ID, newTag reference.Named) error

TagImageWithReference adds the given reference to the image ID provided.

func (*Daemon) Unmount 

func (daemon *Daemon) Unmount(container *container.Container) error

Unmount unsets the container base filesystem

func (*Daemon) UnsubscribeFromEvents 

func (daemon *Daemon) UnsubscribeFromEvents(listener chan interface{})

UnsubscribeFromEvents stops the event subscription for a client by closing the channel where the daemon sends events to.

func (*Daemon) UpdateContainerServiceConfig 

func (daemon *Daemon) UpdateContainerServiceConfig(containerName string, serviceConfig *clustertypes.ServiceConfig) error

UpdateContainerServiceConfig updates a service configuration.

func (*Daemon) V4Subnets 

func (daemon *Daemon) V4Subnets() []net.IPNet

V4Subnets returns the IPv4 subnets of networks that are managed by Docker.

func (*Daemon) V6Subnets 

func (daemon *Daemon) V6Subnets() []net.IPNet

V6Subnets returns the IPv6 subnets of networks that are managed by Docker.

func (*Daemon) VolumeCreate 

func (daemon *Daemon) VolumeCreate(name, driverName string, opts, labels map[string]string) (*types.Volume, error)

VolumeCreate creates a volume with the specified name, driver, and opts This is called directly from the remote API

func (*Daemon) VolumeInspect 

func (daemon *Daemon) VolumeInspect(name string) (*types.Volume, error)

VolumeInspect looks up a volume by name. An error is returned if the volume cannot be found.

func (*Daemon) VolumeRm 

func (daemon *Daemon) VolumeRm(name string) error

VolumeRm removes the volume with the given name. If the volume is referenced by a container it is not removed This is called directly from the remote API

func (*Daemon) Volumes 

func (daemon *Daemon) Volumes(filter string) ([]*types.Volume, []string, error)

Volumes lists known volumes, using the filter to restrict the range of volumes returned.

type ErrImageDoesNotExist 

type ErrImageDoesNotExist struct {
	RefOrID string
}

ErrImageDoesNotExist is error returned when no image can be found for a reference.

func (ErrImageDoesNotExist) Error 

func (e ErrImageDoesNotExist) Error() string

type LogConfig 

type LogConfig struct {
	Type   string            `json:"log-driver,omitempty"`
	Config map[string]string `json:"log-opts,omitempty"`
}

LogConfig represents the default log configuration. It includes json tags to deserialize configuration from a file using the same names that the flags in the command line use.

Source Files

View all Source files

Directories

Path Synopsis
convert
executor
executor/container
provider
testutils
aufs
btrfs
devmapper
graphtest
overlay
overlay2
register
vfs
windows
zfs
Package logger defines interfaces that logger drivers implement to log messages.
 Package logger defines interfaces that logger drivers implement to log messages.
awslogs
Package awslogs provides the logdriver for forwarding container logs to Amazon CloudWatch Logs
 Package awslogs provides the logdriver for forwarding container logs to Amazon CloudWatch Logs
etwlogs
Package etwlogs provides a log driver for forwarding container logs as ETW events.(ETW stands for Event Tracing for Windows) A client can then create an ETW listener to listen for events that are sent by the ETW provider that we register, using the provider's GUID "a3693192-9ed6-46d2-a981-f8226c8363bd".
 Package etwlogs provides a log driver for forwarding container logs as ETW events.(ETW stands for Event Tracing for Windows) A client can then create an ETW listener to listen for events that are sent by the ETW provider that we register, using the provider's GUID "a3693192-9ed6-46d2-a981-f8226c8363bd".
fluentd
Package fluentd provides the log driver for forwarding server logs to fluentd endpoints.
 Package fluentd provides the log driver for forwarding server logs to fluentd endpoints.
gcplogs
gelf
Package gelf provides the log driver for forwarding server logs to endpoints that support the Graylog Extended Log Format.
 Package gelf provides the log driver for forwarding server logs to endpoints that support the Graylog Extended Log Format.
journald
Package journald provides the log driver for forwarding server logs to endpoints that receive the systemd format.
 Package journald provides the log driver for forwarding server logs to endpoints that receive the systemd format.
jsonfilelog
Package jsonfilelog provides the default Logger implementation for Docker logging.
 Package jsonfilelog provides the default Logger implementation for Docker logging.
loggerutils
splunk
Package splunk provides the log driver for forwarding server logs to Splunk HTTP Event Collector endpoint.
 Package splunk provides the log driver for forwarding server logs to Splunk HTTP Event Collector endpoint.
syslog
Package syslog provides the logdriver for forwarding server logs to syslog endpoints.
 Package syslog provides the logdriver for forwarding server logs to syslog endpoints.

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