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145 lines
7.1 KiB
Go
145 lines
7.1 KiB
Go
// +build linux freebsd
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package daemon
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import (
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"fmt"
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"net"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/opts"
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runconfigopts "github.com/docker/docker/runconfig/opts"
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units "github.com/docker/go-units"
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"github.com/spf13/pflag"
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)
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var (
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defaultPidFile = "/var/run/docker.pid"
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defaultGraph = "/var/lib/docker"
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defaultExecRoot = "/var/run/docker"
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)
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// Config defines the configuration of a docker daemon.
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// It includes json tags to deserialize configuration from a file
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// using the same names that the flags in the command line uses.
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type Config struct {
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CommonConfig
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// Fields below here are platform specific.
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CgroupParent string `json:"cgroup-parent,omitempty"`
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ContainerdAddr string `json:"containerd,omitempty"`
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EnableSelinuxSupport bool `json:"selinux-enabled,omitempty"`
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ExecRoot string `json:"exec-root,omitempty"`
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RemappedRoot string `json:"userns-remap,omitempty"`
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Ulimits map[string]*units.Ulimit `json:"default-ulimits,omitempty"`
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Runtimes map[string]types.Runtime `json:"runtimes,omitempty"`
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DefaultRuntime string `json:"default-runtime,omitempty"`
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OOMScoreAdjust int `json:"oom-score-adjust,omitempty"`
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Init bool `json:"init,omitempty"`
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InitPath string `json:"init-path,omitempty"`
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}
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// bridgeConfig stores all the bridge driver specific
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// configuration.
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type bridgeConfig struct {
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commonBridgeConfig
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// Fields below here are platform specific.
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EnableIPv6 bool `json:"ipv6,omitempty"`
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EnableIPTables bool `json:"iptables,omitempty"`
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EnableIPForward bool `json:"ip-forward,omitempty"`
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EnableIPMasq bool `json:"ip-masq,omitempty"`
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EnableUserlandProxy bool `json:"userland-proxy,omitempty"`
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UserlandProxyPath string `json:"userland-proxy-path,omitempty"`
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DefaultIP net.IP `json:"ip,omitempty"`
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IP string `json:"bip,omitempty"`
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FixedCIDRv6 string `json:"fixed-cidr-v6,omitempty"`
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DefaultGatewayIPv4 net.IP `json:"default-gateway,omitempty"`
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DefaultGatewayIPv6 net.IP `json:"default-gateway-v6,omitempty"`
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InterContainerCommunication bool `json:"icc,omitempty"`
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}
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// InstallFlags adds flags to the pflag.FlagSet to configure the daemon
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func (config *Config) InstallFlags(flags *pflag.FlagSet) {
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// First handle install flags which are consistent cross-platform
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config.InstallCommonFlags(flags)
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config.Ulimits = make(map[string]*units.Ulimit)
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config.Runtimes = make(map[string]types.Runtime)
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// Then platform-specific install flags
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flags.BoolVar(&config.EnableSelinuxSupport, "selinux-enabled", false, "Enable selinux support")
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flags.StringVarP(&config.SocketGroup, "group", "G", "docker", "Group for the unix socket")
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flags.Var(runconfigopts.NewUlimitOpt(&config.Ulimits), "default-ulimit", "Default ulimits for containers")
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flags.BoolVar(&config.bridgeConfig.EnableIPTables, "iptables", true, "Enable addition of iptables rules")
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flags.BoolVar(&config.bridgeConfig.EnableIPForward, "ip-forward", true, "Enable net.ipv4.ip_forward")
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flags.BoolVar(&config.bridgeConfig.EnableIPMasq, "ip-masq", true, "Enable IP masquerading")
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flags.BoolVar(&config.bridgeConfig.EnableIPv6, "ipv6", false, "Enable IPv6 networking")
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flags.StringVar(&config.ExecRoot, "exec-root", defaultExecRoot, "Root directory for execution state files")
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flags.StringVar(&config.bridgeConfig.IP, "bip", "", "Specify network bridge IP")
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flags.StringVarP(&config.bridgeConfig.Iface, "bridge", "b", "", "Attach containers to a network bridge")
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flags.StringVar(&config.bridgeConfig.FixedCIDR, "fixed-cidr", "", "IPv4 subnet for fixed IPs")
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flags.StringVar(&config.bridgeConfig.FixedCIDRv6, "fixed-cidr-v6", "", "IPv6 subnet for fixed IPs")
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flags.Var(opts.NewIPOpt(&config.bridgeConfig.DefaultGatewayIPv4, ""), "default-gateway", "Container default gateway IPv4 address")
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flags.Var(opts.NewIPOpt(&config.bridgeConfig.DefaultGatewayIPv6, ""), "default-gateway-v6", "Container default gateway IPv6 address")
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flags.BoolVar(&config.bridgeConfig.InterContainerCommunication, "icc", true, "Enable inter-container communication")
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flags.Var(opts.NewIPOpt(&config.bridgeConfig.DefaultIP, "0.0.0.0"), "ip", "Default IP when binding container ports")
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flags.BoolVar(&config.bridgeConfig.EnableUserlandProxy, "userland-proxy", true, "Use userland proxy for loopback traffic")
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flags.StringVar(&config.bridgeConfig.UserlandProxyPath, "userland-proxy-path", "", "Path to the userland proxy binary")
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flags.BoolVar(&config.EnableCors, "api-enable-cors", false, "Enable CORS headers in the remote API, this is deprecated by --api-cors-header")
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flags.MarkDeprecated("api-enable-cors", "Please use --api-cors-header")
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flags.StringVar(&config.CgroupParent, "cgroup-parent", "", "Set parent cgroup for all containers")
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flags.StringVar(&config.RemappedRoot, "userns-remap", "", "User/Group setting for user namespaces")
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flags.StringVar(&config.ContainerdAddr, "containerd", "", "Path to containerd socket")
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flags.BoolVar(&config.LiveRestoreEnabled, "live-restore", false, "Enable live restore of docker when containers are still running")
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flags.Var(runconfigopts.NewNamedRuntimeOpt("runtimes", &config.Runtimes, stockRuntimeName), "add-runtime", "Register an additional OCI compatible runtime")
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flags.StringVar(&config.DefaultRuntime, "default-runtime", stockRuntimeName, "Default OCI runtime for containers")
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flags.IntVar(&config.OOMScoreAdjust, "oom-score-adjust", -500, "Set the oom_score_adj for the daemon")
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flags.BoolVar(&config.Init, "init", false, "Run an init in the container to forward signals and reap processes")
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flags.StringVar(&config.InitPath, "init-path", "", "Path to the docker-init binary")
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config.attachExperimentalFlags(flags)
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}
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// GetRuntime returns the runtime path and arguments for a given
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// runtime name
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func (config *Config) GetRuntime(name string) *types.Runtime {
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config.reloadLock.Lock()
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defer config.reloadLock.Unlock()
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if rt, ok := config.Runtimes[name]; ok {
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return &rt
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}
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return nil
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}
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// GetDefaultRuntimeName returns the current default runtime
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func (config *Config) GetDefaultRuntimeName() string {
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config.reloadLock.Lock()
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rt := config.DefaultRuntime
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config.reloadLock.Unlock()
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return rt
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}
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// GetAllRuntimes returns a copy of the runtimes map
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func (config *Config) GetAllRuntimes() map[string]types.Runtime {
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config.reloadLock.Lock()
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rts := config.Runtimes
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config.reloadLock.Unlock()
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return rts
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}
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// GetExecRoot returns the user configured Exec-root
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func (config *Config) GetExecRoot() string {
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return config.ExecRoot
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}
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func (config *Config) isSwarmCompatible() error {
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if config.ClusterStore != "" || config.ClusterAdvertise != "" {
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return fmt.Errorf("--cluster-store and --cluster-advertise daemon configurations are incompatible with swarm mode")
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}
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if config.LiveRestoreEnabled {
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return fmt.Errorf("--live-restore daemon configuration is incompatible with swarm mode")
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}
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return nil
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}
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