config

package
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 Go to latest Published: Sep 5, 2024 License: Apache-2.0 Imports: 32 Imported by: 0

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Constants

View Source 
const (
	// DefaultMaxConcurrentDownloads is the default value for
	// maximum number of downloads that
	// may take place at a time.
	DefaultMaxConcurrentDownloads = 3
	// DefaultMaxConcurrentUploads is the default value for
	// maximum number of uploads that
	// may take place at a time.
	DefaultMaxConcurrentUploads = 5
	// DefaultDownloadAttempts is the default value for
	// maximum number of attempts that
	// may take place at a time for each pull when the connection is lost.
	DefaultDownloadAttempts = 5
	// DefaultShmSize is the default value for container's shm size (64 MiB)
	DefaultShmSize int64 = 64 * 1024 * 1024
	// DefaultNetworkMtu is the default value for network MTU
	DefaultNetworkMtu = 1500
	// DisableNetworkBridge is the default value of the option to disable network bridge
	DisableNetworkBridge = "none"
	// DefaultShutdownTimeout is the default shutdown timeout (in seconds) for
	// the daemon for containers to stop when it is shutting down.
	DefaultShutdownTimeout = 15
	// DefaultInitBinary is the name of the default init binary
	DefaultInitBinary = "docker-init"
	// DefaultRuntimeBinary is the default runtime to be used by
	// containerd if none is specified
	DefaultRuntimeBinary = "runc"
	// DefaultContainersNamespace is the name of the default containerd namespace used for users containers.
	DefaultContainersNamespace = "moby"
	// DefaultPluginNamespace is the name of the default containerd namespace used for plugins.
	DefaultPluginNamespace = "plugins.moby"

	// LinuxV2RuntimeName is the runtime used to specify the containerd v2 runc shim
	LinuxV2RuntimeName = "io.containerd.runc.v2"

	// SeccompProfileDefault is the built-in default seccomp profile.
	SeccompProfileDefault = "builtin"
	// SeccompProfileUnconfined is a special profile name for seccomp to use an
	// "unconfined" seccomp profile.
	SeccompProfileUnconfined = "unconfined"
)
View Source 
const (
	// DefaultIpcMode is default for container's IpcMode, if not set otherwise
	DefaultIpcMode = container.IPCModePrivate

	// DefaultCgroupNamespaceMode is the default mode for containers cgroup namespace when using cgroups v2.
	DefaultCgroupNamespaceMode = container.CgroupnsModePrivate

	// DefaultCgroupV1NamespaceMode is the default mode for containers cgroup namespace when using cgroups v1.
	DefaultCgroupV1NamespaceMode = container.CgroupnsModeHost

	// StockRuntimeName is the reserved name/alias used to represent the
	// OCI runtime being shipped with the docker daemon package.
	StockRuntimeName = "runc"
)

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 IsPermissibleC8dRuntimeName 

func IsPermissibleC8dRuntimeName(name string) bool

IsPermissibleC8dRuntimeName tests whether name is safe to pass into containerd as a runtime name, and whether the name is well-formed. It does not check if the runtime is installed.

A runtime name containing slash characters is interpreted by containerd as the path to a runtime binary. If we allowed this, anyone with Engine API access could get containerd to execute an arbitrary binary as root. Although Engine API access is already equivalent to root on the host, the runtime name has not historically been a vector to run arbitrary code as root so users are not expecting it to become one.

This restriction is not configurable. There are viable workarounds for legitimate use cases: administrators and runtime developers can make runtimes available for use with Docker by installing them onto PATH following the binary naming convention for containerd Runtime v2.

func MaskCredentials 

func MaskCredentials(rawURL string) string

MaskCredentials masks credentials that are in an URL.

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 and config.MaxDownloadAttempts.

Types

type BridgeConfig 

type BridgeConfig struct {

	// Fields below here are platform specific.
	DefaultIP                   net.IP `json:"ip,omitempty"`
	IP                          string `json:"bip,omitempty"`
	DefaultGatewayIPv4          net.IP `json:"default-gateway,omitempty"`
	DefaultGatewayIPv6          net.IP `json:"default-gateway-v6,omitempty"`
	InterContainerCommunication bool   `json:"icc,omitempty"`

	EnableIPv6          bool   `json:"ipv6,omitempty"`
	EnableIPTables      bool   `json:"iptables,omitempty"`
	EnableIP6Tables     bool   `json:"ip6tables,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"`
	Entitlements BuilderEntitlements `json:",omitempty"`
}

BuilderConfig contains config for the builder

type BuilderEntitlements 

type BuilderEntitlements struct {
	NetworkHost      *bool `json:"network-host,omitempty"`
	SecurityInsecure *bool `json:"security-insecure,omitempty"`
}

BuilderEntitlements contains settings to enable/disable entitlements

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 BuilderGCFilter 

type BuilderGCFilter filters.Args

BuilderGCFilter contains garbage-collection filter rules for a BuildKit builder

func (*BuilderGCFilter) MarshalJSON 

func (x *BuilderGCFilter) MarshalJSON() ([]byte, error)

MarshalJSON returns a JSON byte representation of the BuilderGCFilter

func (*BuilderGCFilter) UnmarshalJSON 

func (x *BuilderGCFilter) UnmarshalJSON(data []byte) error

UnmarshalJSON fills the BuilderGCFilter values structure from JSON input

type BuilderGCRule 

type BuilderGCRule struct {
	All         bool            `json:",omitempty"`
	Filter      BuilderGCFilter `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:"-"`
	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"`
	NetworkDiagnosticPort int                       `json:"network-diagnostic-port,omitempty"`
	Pidfile               string                    `json:"pidfile,omitempty"`
	RawLogs               bool                      `json:"raw-logs,omitempty"`
	RootDeprecated        string                    `json:"graph,omitempty"` // Deprecated: use Root instead. TODO(thaJeztah): remove in next release.
	Root                  string                    `json:"data-root,omitempty"`
	ExecRoot              string                    `json:"exec-root,omitempty"`
	SocketGroup           string                    `json:"group,omitempty"`
	CorsHeaders           string                    `json:"api-cors-header,omitempty"`

	// Proxies holds the proxies that are configured for the daemon.
	Proxies `json:"proxies"`

	// 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.
	// Deprecated: host-discovery and overlay networks with external k/v stores are deprecated
	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.
	// Deprecated: host-discovery and overlay networks with external k/v stores are deprecated
	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.
	// Deprecated: host-discovery and overlay networks with external k/v stores are deprecated
	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 attempts that
	// may take place at a time for each push.
	MaxDownloadAttempts int `json:"max-download-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"`

	DNSConfig
	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"`

	ContainerdNamespace       string `json:"containerd-namespace,omitempty"`
	ContainerdPluginNamespace string `json:"containerd-plugin-namespace,omitempty"`

	DefaultRuntime string `json:"default-runtime,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 Config 

type Config struct {
	CommonConfig

	// Fields below here are platform specific.
	Runtimes             map[string]types.Runtime `json:"runtimes,omitempty"`
	DefaultInitBinary    string                   `json:"default-init,omitempty"`
	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"`
	CgroupNamespaceMode  string                   `json:"default-cgroupns-mode,omitempty"`
	// ResolvConf is the path to the configuration of the host resolver
	ResolvConf string `json:"resolv-conf,omitempty"`
	Rootless   bool   `json:"rootless,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, error)

New returns a new fully initialized Config struct with default values set.

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) IsRootless 

func (conf *Config) IsRootless() bool

IsRootless returns conf.Rootless on Linux but false on Windows

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 DNSConfig 

type DNSConfig struct {
	DNS           []string `json:"dns,omitempty"`
	DNSOptions    []string `json:"dns-opts,omitempty"`
	DNSSearch     []string `json:"dns-search,omitempty"`
	HostGatewayIP net.IP   `json:"host-gateway-ip,omitempty"`
}

DNSConfig defines the DNS configurations.

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

type Proxies 

type Proxies struct {
	HTTPProxy  string `json:"http-proxy,omitempty"`
	HTTPSProxy string `json:"https-proxy,omitempty"`
	NoProxy    string `json:"no-proxy,omitempty"`
}

Proxies holds the proxies that are configured for the daemon.

Source Files

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