cluster

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Published: May 15, 2024 License: Apache-2.0 Imports: 50 Imported by: 0

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Variables

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Functions

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Types

type Cluster

type Cluster struct {
	// contains filtered or unexported fields
}

Cluster provides capabilities to participate in a cluster as a worker or a manager.

func New

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

New creates a new Cluster instance using provided config.

func (*Cluster) AttachNetwork

func (c *Cluster) AttachNetwork(target string, containerID string, addresses []string) (*network.NetworkingConfig, error)

AttachNetwork generates an attachment request towards the manager.

func (*Cluster) Cleanup

func (c *Cluster) Cleanup()

Cleanup stops active swarm node. This is run before daemon shutdown.

func (*Cluster) CreateConfig

func (c *Cluster) CreateConfig(s types.ConfigSpec) (string, error)

CreateConfig creates a new config in a managed swarm cluster.

func (*Cluster) CreateNetwork

func (c *Cluster) CreateNetwork(s apitypes.NetworkCreateRequest) (string, error)

CreateNetwork creates a new cluster managed network.

func (*Cluster) CreateSecret

func (c *Cluster) CreateSecret(s types.SecretSpec) (string, error)

CreateSecret creates a new secret in a managed swarm cluster.

func (*Cluster) CreateService

func (c *Cluster) CreateService(s swarm.ServiceSpec, encodedAuth string, queryRegistry bool) (*swarm.ServiceCreateResponse, error)

CreateService creates a new service in a managed swarm cluster.

func (*Cluster) CreateVolume

func (c *Cluster) CreateVolume(v volumetypes.CreateOptions) (*volumetypes.Volume, error)

CreateVolume creates a new cluster volume in the swarm cluster.

Returns the volume ID if creation is successful, or an error if not.

func (*Cluster) DetachNetwork

func (c *Cluster) DetachNetwork(target string, containerID string) error

DetachNetwork unblocks the waiters waiting on WaitForDetachment so that a request to detach can be generated towards the manager.

func (*Cluster) GetAdvertiseAddress

func (c *Cluster) GetAdvertiseAddress() string

GetAdvertiseAddress returns the remotely reachable address of this node.

func (*Cluster) GetConfig

func (c *Cluster) GetConfig(input string) (types.Config, error)

GetConfig returns a config from a managed swarm cluster

func (*Cluster) GetConfigs

func (c *Cluster) GetConfigs(options apitypes.ConfigListOptions) ([]types.Config, error)

GetConfigs returns all configs of a managed swarm cluster.

func (*Cluster) GetDataPathAddress

func (c *Cluster) GetDataPathAddress() string

GetDataPathAddress returns the address to be used for the data path traffic, if specified.

func (*Cluster) GetListenAddress

func (c *Cluster) GetListenAddress() string

GetListenAddress returns the listen address.

func (*Cluster) GetLocalAddress

func (c *Cluster) GetLocalAddress() string

GetLocalAddress returns the local address.

func (*Cluster) GetNetwork

func (c *Cluster) GetNetwork(input string) (apitypes.NetworkResource, error)

GetNetwork returns a cluster network by an ID.

func (*Cluster) GetNetworks

func (c *Cluster) GetNetworks(filter filters.Args) ([]apitypes.NetworkResource, error)

GetNetworks returns all current cluster managed networks.

func (*Cluster) GetNetworksByName

func (c *Cluster) GetNetworksByName(name string) ([]apitypes.NetworkResource, error)

GetNetworksByName returns cluster managed networks by name. It is ok to have multiple networks here. #18864

func (*Cluster) GetNode

func (c *Cluster) GetNode(input string) (types.Node, error)

GetNode returns a node based on an ID.

func (*Cluster) GetNodes

func (c *Cluster) GetNodes(options apitypes.NodeListOptions) ([]types.Node, error)

GetNodes returns a list of all nodes known to a cluster.

func (*Cluster) GetRemoteAddressList

func (c *Cluster) GetRemoteAddressList() []string

GetRemoteAddressList returns the advertise address for each of the remote managers if available.

func (*Cluster) GetSecret

func (c *Cluster) GetSecret(input string) (types.Secret, error)

GetSecret returns a secret from a managed swarm cluster

func (*Cluster) GetSecrets

func (c *Cluster) GetSecrets(options apitypes.SecretListOptions) ([]types.Secret, error)

GetSecrets returns all secrets of a managed swarm cluster.

func (*Cluster) GetService

func (c *Cluster) GetService(input string, insertDefaults bool) (swarm.Service, error)

GetService returns a service based on an ID or name.

func (*Cluster) GetServices

func (c *Cluster) GetServices(options types.ServiceListOptions) ([]swarm.Service, error)

GetServices returns all services of a managed swarm cluster.

func (*Cluster) GetTask

func (c *Cluster) GetTask(input string) (types.Task, error)

GetTask returns a task by an ID.

func (*Cluster) GetTasks

func (c *Cluster) GetTasks(options apitypes.TaskListOptions) ([]types.Task, error)

GetTasks returns a list of tasks matching the filter options.

func (*Cluster) GetUnlockKey

func (c *Cluster) GetUnlockKey() (string, error)

GetUnlockKey returns the unlock key for the swarm.

func (*Cluster) GetVolume

func (c *Cluster) GetVolume(nameOrID string) (volumetypes.Volume, error)

GetVolume returns a volume from the swarm cluster.

func (*Cluster) GetVolumes

func (c *Cluster) GetVolumes(options volumetypes.ListOptions) ([]*volumetypes.Volume, error)

GetVolumes returns all of the volumes matching the given options from a swarm cluster.

func (*Cluster) GetWatchStream

func (c *Cluster) GetWatchStream() chan *swarmapi.WatchMessage

GetWatchStream returns the channel to pass changes from store watch API

func (*Cluster) Info

func (c *Cluster) Info(ctx context.Context) types.Info

Info returns information about the current cluster state.

func (*Cluster) Init

func (c *Cluster) Init(req types.InitRequest) (string, error)

Init initializes new cluster from user provided request.

func (*Cluster) Inspect

func (c *Cluster) Inspect() (types.Swarm, error)

Inspect retrieves the configuration properties of a managed swarm cluster.

func (*Cluster) IsAgent

func (c *Cluster) IsAgent() bool

IsAgent returns true if Cluster is participating as a worker/agent.

func (*Cluster) IsManager

func (c *Cluster) IsManager() bool

IsManager returns true if Cluster is participating as a manager.

func (*Cluster) Join

func (c *Cluster) Join(req types.JoinRequest) error

Join makes current Cluster part of an existing swarm cluster.

func (*Cluster) Leave

func (c *Cluster) Leave(ctx context.Context, force bool) error

Leave shuts down Cluster and removes current state.

func (*Cluster) ListenClusterEvents

func (c *Cluster) ListenClusterEvents() <-chan lncluster.ConfigEventType

ListenClusterEvents returns a channel that receives messages on cluster participation changes. todo: make cancelable and accessible to multiple callers

func (*Cluster) RemoveConfig

func (c *Cluster) RemoveConfig(input string) error

RemoveConfig removes a config from a managed swarm cluster.

func (*Cluster) RemoveNetwork

func (c *Cluster) RemoveNetwork(input string) error

RemoveNetwork removes a cluster network.

func (*Cluster) RemoveNode

func (c *Cluster) RemoveNode(input string, force bool) error

RemoveNode removes a node from a cluster

func (*Cluster) RemoveSecret

func (c *Cluster) RemoveSecret(input string) error

RemoveSecret removes a secret from a managed swarm cluster.

func (*Cluster) RemoveService

func (c *Cluster) RemoveService(input string) error

RemoveService removes a service from a managed swarm cluster.

func (*Cluster) RemoveVolume

func (c *Cluster) RemoveVolume(nameOrID string, force bool) error

RemoveVolume removes a volume from the swarm cluster.

func (*Cluster) SendClusterEvent

func (c *Cluster) SendClusterEvent(event lncluster.ConfigEventType)

SendClusterEvent allows to send cluster events on the configEvent channel TODO This method should not be exposed. Currently it is used to notify the network controller that the keys are available

func (*Cluster) ServiceLogs

func (c *Cluster) ServiceLogs(ctx context.Context, selector *backend.LogSelector, config *container.LogsOptions) (<-chan *backend.LogMessage, error)

ServiceLogs collects service logs and writes them back to `config.OutStream`

func (*Cluster) Start

func (c *Cluster) Start() error

Start the Cluster instance TODO The split between New and Start can be join again when the SendClusterEvent method is no longer required

func (*Cluster) Status

func (c *Cluster) Status() string

Status returns a textual representation of the node's swarm status and role (manager/worker)

func (*Cluster) UnlockSwarm

func (c *Cluster) UnlockSwarm(req types.UnlockRequest) error

UnlockSwarm provides a key to decrypt data that is encrypted at rest.

func (*Cluster) Update

func (c *Cluster) Update(version uint64, spec types.Spec, flags types.UpdateFlags) error

Update updates configuration of a managed swarm cluster.

func (*Cluster) UpdateAttachment

func (c *Cluster) UpdateAttachment(target, containerID string, config *network.NetworkingConfig) error

UpdateAttachment signals the attachment config to the attachment waiter who is trying to start or attach the container to the network.

func (*Cluster) UpdateConfig

func (c *Cluster) UpdateConfig(input string, version uint64, spec types.ConfigSpec) error

UpdateConfig updates a config in a managed swarm cluster. Note: this is not exposed to the CLI but is available from the API only

func (*Cluster) UpdateNode

func (c *Cluster) UpdateNode(input string, version uint64, spec types.NodeSpec) error

UpdateNode updates existing nodes properties.

func (*Cluster) UpdateSecret

func (c *Cluster) UpdateSecret(input string, version uint64, spec types.SecretSpec) error

UpdateSecret updates a secret in a managed swarm cluster. Note: this is not exposed to the CLI but is available from the API only

func (*Cluster) UpdateService

func (c *Cluster) UpdateService(serviceIDOrName string, version uint64, spec swarm.ServiceSpec, flags types.ServiceUpdateOptions, queryRegistry bool) (*swarm.ServiceUpdateResponse, error)

UpdateService updates existing service to match new properties.

func (*Cluster) UpdateVolume

func (c *Cluster) UpdateVolume(nameOrID string, version uint64, volume volumetypes.UpdateOptions) error

UpdateVolume updates a volume in the swarm cluster.

func (*Cluster) WaitForDetachment

func (c *Cluster) WaitForDetachment(ctx context.Context, networkName, networkID, taskID, containerID string) error

WaitForDetachment waits for the container to stop or detach from the network.

type Config

type Config struct {
	Root                   string
	Name                   string
	Backend                executorpkg.Backend
	ImageBackend           executorpkg.ImageBackend
	PluginBackend          plugin.Backend
	VolumeBackend          executorpkg.VolumeBackend
	NetworkSubnetsProvider NetworkSubnetsProvider

	// DefaultAdvertiseAddr is the default host/IP or network interface to use
	// if no AdvertiseAddr value is specified.
	DefaultAdvertiseAddr string

	// path to store runtime state, such as the swarm control socket
	RuntimeRoot string

	// WatchStream is a channel to pass watch API notifications to daemon
	WatchStream chan *swarmapi.WatchMessage

	// RaftHeartbeatTick is the number of ticks for heartbeat of quorum members
	RaftHeartbeatTick uint32

	// RaftElectionTick is the number of ticks to elapse before followers propose a new round of leader election
	// This value should be 10x that of RaftHeartbeatTick
	RaftElectionTick uint32
}

Config provides values for Cluster.

type NetworkSubnetsProvider

type NetworkSubnetsProvider interface {
	Subnets() ([]net.IPNet, []net.IPNet)
}

NetworkSubnetsProvider exposes functions for retrieving the subnets of networks managed by Docker, so they can be filtered.

Directories

Path Synopsis
controllers

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