config

package
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 Go to latest Published: Apr 6, 2020 License: Apache-2.0 Imports: 25 Imported by: 0

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Index

Constants

View Source 
const (
	// DefaultMaxConcurrentDownloads is the default value for
	// maximum number of downloads that
	// may take place at a time for each pull.
	DefaultMaxConcurrentDownloads = 3
	// DefaultMaxConcurrentUploads is the default value for
	// maximum number of uploads that
	// may take place at a time for each push.
	DefaultMaxConcurrentUploads = 5
	// DefaultMaxDownloadAttempts is the default value for
	// maximum number of times that
	// a download may be retried during pull.
	DefaultMaxDownloadAttempts = 5
	// DefaultMaxUploadAttempts is the default value for
	// maximum number of times that
	// an upload may be retried during push.
	DefaultMaxUploadAttempts = 5
	// StockRuntimeName is the reserved name/alias used to represent the
	// OCI runtime being shipped with the docker daemon package.
	StockRuntimeName = "runc"
	// DefaultShmSize is the default value for container's shm size
	DefaultShmSize = int64(67108864)
	// DefaultNetworkMtu is the default value for network MTU
	DefaultNetworkMtu = 1500
	// DisableNetworkBridge is the default value of the option to disable network bridge
	DisableNetworkBridge = "none"
	// DefaultInitBinary is the name of the default init binary
	DefaultInitBinary = "balena-engine-init"
)
View Source 
const (
	// DefaultIpcMode is default for container's IpcMode, if not set otherwise
	DefaultIpcMode = "shareable" // TODO: change to private
)

Variables

This section is empty.

Functions

func GetConflictFreeLabels 

func GetConflictFreeLabels(labels []string) ([]string, error)

GetConflictFreeLabels validates Labels for conflict In swarm the duplicates for labels are removed so we only take same values here, no conflict values If the key-value is the same we will only take the last label

func ModifiedDiscoverySettings 

func ModifiedDiscoverySettings(config *Config, backendType, advertise string, clusterOpts map[string]string) bool

ModifiedDiscoverySettings returns whether the discovery configuration has been modified or not.

func ParseClusterAdvertiseSettings 

func ParseClusterAdvertiseSettings(clusterStore, clusterAdvertise string) (string, error)

ParseClusterAdvertiseSettings parses the specified advertise settings

func ParseGenericResources 

func ParseGenericResources(value []string) ([]swarm.GenericResource, error)

ParseGenericResources parses and validates the specified string as a list of GenericResource

func Reload 

func Reload(configFile string, flags *pflag.FlagSet, reload func(*Config)) error

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

func Validate 

func Validate(config *Config) error

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

func ValidateReservedNamespaceLabels 

func ValidateReservedNamespaceLabels(labels []string) error

ValidateReservedNamespaceLabels errors if the reserved namespaces com.docker.*, io.docker.*, org.dockerproject.* are used in a configured engine label.

TODO: This is a separate function because we need to warn users first of the deprecation. When we return an error, this logic can be added to Validate or GetConflictFreeLabels instead of being here.

Types

type BridgeConfig 

type BridgeConfig struct {

	// Fields below here are platform specific.
	EnableIPv6          bool   `json:"ipv6,omitempty"`
	EnableIPTables      bool   `json:"iptables,omitempty"`
	EnableIPForward     bool   `json:"ip-forward,omitempty"`
	EnableIPMasq        bool   `json:"ip-masq,omitempty"`
	EnableUserlandProxy bool   `json:"userland-proxy,omitempty"`
	UserlandProxyPath   string `json:"userland-proxy-path,omitempty"`
	FixedCIDRv6         string `json:"fixed-cidr-v6,omitempty"`
	// contains filtered or unexported fields
}

BridgeConfig stores all the bridge driver specific configuration.

type BuilderConfig 

type BuilderConfig struct {
	GC BuilderGCConfig `json:",omitempty"`
}

BuilderConfig contains config for the builder

type BuilderGCConfig 

type BuilderGCConfig struct {
	Enabled            bool            `json:",omitempty"`
	Policy             []BuilderGCRule `json:",omitempty"`
	DefaultKeepStorage string          `json:",omitempty"`
}

BuilderGCConfig contains GC config for a buildkit builder

type BuilderGCRule 

type BuilderGCRule struct {
	All         bool         `json:",omitempty"`
	Filter      filters.Args `json:",omitempty"`
	KeepStorage string       `json:",omitempty"`
}

BuilderGCRule represents a GC rule for buildkit cache

type CommonConfig 

type CommonConfig struct {
	AuthzMiddleware       *authorization.Middleware `json:"-"`
	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"`
	DeltaGraphDriver      string                    `json:"delta-storage-driver,omitempty"`
	DeltaGraphOptions     []string                  `json:"delta-storage-opts,omitempty"`
	Labels                []string                  `json:"labels,omitempty"`
	Mtu                   int                       `json:"mtu,omitempty"`
	NetworkDiagnosticPort int                       `json:"network-diagnostic-port,omitempty"`
	Pidfile               string                    `json:"pidfile,omitempty"`
	RawLogs               bool                      `json:"raw-logs,omitempty"`
	RootDeprecated        string                    `json:"graph,omitempty"`
	Root                  string                    `json:"data-root,omitempty"`
	DeltaRoot             string                    `json:"delta-data-root,omitempty"`
	ExecRoot              string                    `json:"exec-root,omitempty"`
	SocketGroup           string                    `json:"group,omitempty"`
	CorsHeaders           string                    `json:"api-cors-header,omitempty"`

	// TrustKeyPath is used to generate the daemon ID and for signing schema 1 manifests
	// when pushing to a registry which does not support schema 2. This field is marked as
	// deprecated because schema 1 manifests are deprecated in favor of schema 2 and the
	// daemon ID will use a dedicated identifier not shared with exported signatures.
	TrustKeyPath string `json:"deprecated-key-path,omitempty"`

	// LiveRestoreEnabled determines whether we should keep containers
	// alive upon daemon shutdown/start
	LiveRestoreEnabled 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"`

	// MaxDownloadAttempts is the maximum number of times that failling downloads
	// will be retried for each pull.
	MaxDownloadAttempts *int `json:"max-download-attempts,omitempty"`

	// MaxUploadAttempts is the maximum number of times that failling uploads
	// will be retried for each push.
	MaxUploadAttempts *int `json:"max-upload-attempts,omitempty"`

	// ShutdownTimeout is the timeout value (in seconds) the daemon will wait for the container
	// to stop when daemon is being shutdown
	ShutdownTimeout int `json:"shutdown-timeout,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"`

	// SwarmRaftHeartbeatTick is the number of ticks in time for swarm mode raft quorum heartbeat
	// Typical value is 1
	SwarmRaftHeartbeatTick uint32 `json:"swarm-raft-heartbeat-tick"`

	// SwarmRaftElectionTick is the number of ticks to elapse before followers in the quorum can propose
	// a new round of leader election.  Default, recommended value is at least 10X that of Heartbeat tick.
	// Higher values can make the quorum less sensitive to transient faults in the environment, but this also
	// means it takes longer for the managers to detect a down leader.
	SwarmRaftElectionTick uint32 `json:"swarm-raft-election-tick"`

	MetricsAddress string `json:"metrics-addr"`

	LogConfig
	BridgeConfig // bridgeConfig holds bridge network specific configuration.
	NetworkConfig
	registry.ServiceOptions

	sync.Mutex
	// FIXME(vdemeester) This part is not that clear and is mainly dependent on cli flags
	// It should probably be handled outside this package.
	ValuesSet map[string]interface{} `json:"-"`

	Experimental bool `json:"experimental"` // Experimental indicates whether experimental features should be exposed or not

	// Exposed node Generic Resources
	// e.g: ["orange=red", "orange=green", "orange=blue", "apple=3"]
	NodeGenericResources []string `json:"node-generic-resources,omitempty"`

	// ContainerAddr is the address used to connect to containerd if we're
	// not starting it ourselves
	ContainerdAddr string `json:"containerd,omitempty"`

	// CriContainerd determines whether a supervised containerd instance
	// should be configured with the CRI plugin enabled. This allows using
	// Docker's containerd instance directly with a Kubernetes kubelet.
	CriContainerd bool `json:"cri-containerd,omitempty"`

	// Features contains a list of feature key value pairs indicating what features are enabled or disabled.
	// If a certain feature doesn't appear in this list then it's unset (i.e. neither true nor false).
	Features map[string]bool `json:"features,omitempty"`

	Builder BuilderConfig `json:"builder,omitempty"`
}

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 CommonUnixConfig 

type CommonUnixConfig struct {
	Runtimes          map[string]types.Runtime `json:"runtimes,omitempty"`
	DefaultRuntime    string                   `json:"default-runtime,omitempty"`
	DefaultInitBinary string                   `json:"default-init,omitempty"`
}

CommonUnixConfig defines configuration of a docker daemon that is common across Unix platforms.

type Config 

type Config struct {
	CommonConfig

	// These fields are common to all unix platforms.
	CommonUnixConfig
	// Fields below here are platform specific.
	CgroupParent         string                   `json:"cgroup-parent,omitempty"`
	EnableSelinuxSupport bool                     `json:"selinux-enabled,omitempty"`
	RemappedRoot         string                   `json:"userns-remap,omitempty"`
	Ulimits              map[string]*units.Ulimit `json:"default-ulimits,omitempty"`
	CPURealtimePeriod    int64                    `json:"cpu-rt-period,omitempty"`
	CPURealtimeRuntime   int64                    `json:"cpu-rt-runtime,omitempty"`
	OOMScoreAdjust       int                      `json:"oom-score-adjust,omitempty"`
	Init                 bool                     `json:"init,omitempty"`
	InitPath             string                   `json:"init-path,omitempty"`
	SeccompProfile       string                   `json:"seccomp-profile,omitempty"`
	ShmSize              opts.MemBytes            `json:"default-shm-size,omitempty"`
	NoNewPrivileges      bool                     `json:"no-new-privileges,omitempty"`
	IpcMode              string                   `json:"default-ipc-mode,omitempty"`
	// ResolvConf is the path to the configuration of the host resolver
	ResolvConf string `json:"resolv-conf,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 *pflag.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 New 

func New() *Config

New returns a new fully initialized Config struct

func (*Config) GetAllRuntimes 

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

GetAllRuntimes returns a copy of the runtimes map

func (*Config) GetDefaultRuntimeName 

func (conf *Config) GetDefaultRuntimeName() string

GetDefaultRuntimeName returns the current default runtime

func (*Config) GetExecRoot 

func (conf *Config) GetExecRoot() string

GetExecRoot returns the user configured Exec-root

func (*Config) GetInitPath 

func (conf *Config) GetInitPath() string

GetInitPath returns the configured docker-init path

func (*Config) GetResolvConf 

func (conf *Config) GetResolvConf() string

GetResolvConf returns the appropriate resolv.conf Check setupResolvConf on how this is selected

func (*Config) GetRuntime 

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

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

func (*Config) IsSwarmCompatible 

func (conf *Config) IsSwarmCompatible() error

IsSwarmCompatible defines if swarm mode can be enabled in this config

func (*Config) IsValueSet 

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

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

func (*Config) ValidatePlatformConfig 

func (conf *Config) ValidatePlatformConfig() error

ValidatePlatformConfig checks if any platform-specific configuration settings are invalid.

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.

type NetworkConfig 

type NetworkConfig struct {
	// Default address pools for docker networks
	DefaultAddressPools opts.PoolsOpt `json:"default-address-pools,omitempty"`
	// NetworkControlPlaneMTU allows to specify the control plane MTU, this will allow to optimize the network use in some components
	NetworkControlPlaneMTU int `json:"network-control-plane-mtu,omitempty"`
}

NetworkConfig stores the daemon-wide networking configurations

Source Files

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