package daemon import ( "net" "github.com/docker/docker/opts" flag "github.com/docker/docker/pkg/mflag" "github.com/docker/docker/pkg/ulimit" ) var ( defaultPidFile = "/var/run/docker.pid" defaultGraph = "/var/lib/docker" defaultExec = "native" ) // Config defines the configuration of a docker daemon. // These are the configuration settings that you pass // to the docker daemon when you launch it with say: `docker -d -e lxc` type Config struct { CommonConfig // Fields below here are platform specific. // Bridge holds bridge network specific configuration. Bridge bridgeConfig EnableSelinuxSupport bool SocketGroup string Ulimits map[string]*ulimit.Ulimit } // bridgeConfig stores all the bridge driver specific // configuration. type bridgeConfig struct { EnableIPv6 bool EnableIPTables bool EnableIPForward bool EnableIPMasq bool EnableUserlandProxy bool DefaultIP net.IP Iface string IP string FixedCIDR string FixedCIDRv6 string DefaultGatewayIPv4 net.IP DefaultGatewayIPv6 net.IP InterContainerCommunication bool } // InstallFlags adds command-line options to the top-level flag parser for // the current process. // Subsequent calls to `flag.Parse` will populate config with values parsed // from the command-line. func (config *Config) InstallFlags() { // First handle install flags which are consistent cross-platform config.InstallCommonFlags() // Then platform-specific install flags flag.BoolVar(&config.EnableSelinuxSupport, []string{"-selinux-enabled"}, false, "Enable selinux support") flag.StringVar(&config.SocketGroup, []string{"G", "-group"}, "docker", "Group for the unix socket") config.Ulimits = make(map[string]*ulimit.Ulimit) opts.UlimitMapVar(config.Ulimits, []string{"-default-ulimit"}, "Set default ulimits for containers") flag.BoolVar(&config.Bridge.EnableIPTables, []string{"#iptables", "-iptables"}, true, "Enable addition of iptables rules") flag.BoolVar(&config.Bridge.EnableIPForward, []string{"#ip-forward", "-ip-forward"}, true, "Enable net.ipv4.ip_forward") flag.BoolVar(&config.Bridge.EnableIPMasq, []string{"-ip-masq"}, true, "Enable IP masquerading") flag.BoolVar(&config.Bridge.EnableIPv6, []string{"-ipv6"}, false, "Enable IPv6 networking") flag.StringVar(&config.Bridge.IP, []string{"#bip", "-bip"}, "", "Specify network bridge IP") flag.StringVar(&config.Bridge.Iface, []string{"b", "-bridge"}, "", "Attach containers to a network bridge") flag.StringVar(&config.Bridge.FixedCIDR, []string{"-fixed-cidr"}, "", "IPv4 subnet for fixed IPs") flag.StringVar(&config.Bridge.FixedCIDRv6, []string{"-fixed-cidr-v6"}, "", "IPv6 subnet for fixed IPs") opts.IPVar(&config.Bridge.DefaultGatewayIPv4, []string{"-default-gateway"}, "", "Container default gateway IPv4 address") opts.IPVar(&config.Bridge.DefaultGatewayIPv6, []string{"-default-gateway-v6"}, "", "Container default gateway IPv6 address") flag.BoolVar(&config.Bridge.InterContainerCommunication, []string{"#icc", "-icc"}, true, "Enable inter-container communication") opts.IPVar(&config.Bridge.DefaultIP, []string{"#ip", "-ip"}, "0.0.0.0", "Default IP when binding container ports") flag.BoolVar(&config.Bridge.EnableUserlandProxy, []string{"-userland-proxy"}, true, "Use userland proxy for loopback traffic") config.attachExperimentalFlags() }