config

Documentation

Index

• Constants
• func GetConflictFreeLabels(labels []string) ([]string, error)
• func ModifiedDiscoverySettings(config *Config, backendType, advertise string, clusterOpts map[string]string) bool
• func ParseClusterAdvertiseSettings(clusterStore, clusterAdvertise string) (string, error)
• func ParseGenericResources(value []string) ([]swarm.GenericResource, error)
• func Reload(configFile string, flags *pflag.FlagSet, reload func(*Config)) error
• func Validate(config *Config) error
• type BridgeConfig
• type CommonConfig
• type CommonTLSOptions
• type CommonUnixConfig
• type Config
  • func MergeDaemonConfigurations(flagsConfig *Config, flags *pflag.FlagSet, configFile string) (*Config, error)
  • func New() *Config
  • func (conf *Config) GetAllRuntimes() map[string]types.Runtime
  • func (conf *Config) GetDefaultRuntimeName() string
  • func (conf *Config) GetExecRoot() string
  • func (conf *Config) GetInitPath() string
  • func (conf *Config) GetRuntime(name string) *types.Runtime
  • func (conf *Config) IsSwarmCompatible() error
  • func (conf *Config) IsValueSet(name string) bool
  • func (conf *Config) ValidatePlatformConfig() error
• type LogConfig

Constants

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
	// 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"
)

const (
	// DefaultIpcMode is default for container's IpcMode, if not set otherwise
	DefaultIpcMode = "shareable" // TODO: change to private
)

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.

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 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"`

	// 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"`
	MetricsAddress            string `json:"metrics-addr"`

	LogConfig
	BridgeConfig // bridgeConfig holds bridge network specific configuration.
	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{}

	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"`
	// 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"`

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

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) 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.