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 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
• 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 = "docker-init"
)

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 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"`
	Labels               []string                  `json:"labels,omitempty"`
	Mtu                  int                       `json:"mtu,omitempty"`
	Pidfile              string                    `json:"pidfile,omitempty"`
	RawLogs              bool                      `json:"raw-logs,omitempty"`
	RootDeprecated       string                    `json:"graph,omitempty"`
	Root                 string                    `json:"data-root,omitempty"`
	SocketGroup          string                    `json:"group,omitempty"`
	CorsHeaders          string                    `json:"api-cors-header,omitempty"`
	EnableCors           bool                      `json:"api-enable-cors,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
}

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 {
	ExecRoot          string                   `json:"exec-root,omitempty"`
	ContainerdAddr    string                   `json:"containerd,omitempty"`
	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"`
}

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.

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.