package main import ( "fmt" "log" "os" "strings" "github.com/dotcloud/docker" "github.com/dotcloud/docker/api" "github.com/dotcloud/docker/engine" flag "github.com/dotcloud/docker/pkg/mflag" "github.com/dotcloud/docker/sysinit" "github.com/dotcloud/docker/utils" ) var ( GITCOMMIT string VERSION string ) func main() { if selfPath := utils.SelfPath(); selfPath == "/sbin/init" || selfPath == "/.dockerinit" { // Running in init mode sysinit.SysInit() return } var ( flVersion = flag.Bool([]string{"v", "-version"}, false, "Print version information and quit") flDaemon = flag.Bool([]string{"d", "-daemon"}, false, "Enable daemon mode") flDebug = flag.Bool([]string{"D", "-debug"}, false, "Enable debug mode") flAutoRestart = flag.Bool([]string{"r", "-restart"}, true, "Restart previously running containers") bridgeName = flag.String([]string{"b", "-bridge"}, "", "Attach containers to a pre-existing network bridge; use 'none' to disable container networking") bridgeIp = flag.String([]string{"#bip", "-bip"}, "", "Use this CIDR notation address for the network bridge's IP, not compatible with -b") pidfile = flag.String([]string{"p", "-pidfile"}, "/var/run/docker.pid", "Path to use for daemon PID file") flRoot = flag.String([]string{"g", "-graph"}, "/var/lib/docker", "Path to use as the root of the docker runtime") flEnableCors = flag.Bool([]string{"#api-enable-cors", "-api-enable-cors"}, false, "Enable CORS headers in the remote API") flDns = docker.NewListOpts(docker.ValidateIp4Address) flEnableIptables = flag.Bool([]string{"#iptables", "-iptables"}, true, "Disable docker's addition of iptables rules") flEnableIpForward = flag.Bool([]string{"#ip-forward", "-ip-forward"}, true, "Disable enabling of net.ipv4.ip_forward") flDefaultIp = flag.String([]string{"#ip", "-ip"}, "0.0.0.0", "Default IP address to use when binding container ports") flInterContainerComm = flag.Bool([]string{"#icc", "-icc"}, true, "Enable inter-container communication") flGraphDriver = flag.String([]string{"s", "-storage-driver"}, "", "Force the docker runtime to use a specific storage driver") flHosts = docker.NewListOpts(docker.ValidateHost) flMtu = flag.Int([]string{"#mtu", "-mtu"}, 0, "Set the containers network MTU; if no value is provided: default to the default route MTU or 1500 if not default route is available") ) flag.Var(&flDns, []string{"#dns", "-dns"}, "Force docker to use specific DNS servers") flag.Var(&flHosts, []string{"H", "-host"}, "tcp://host:port, unix://path/to/socket, fd://* or fd://socketfd to use in daemon mode. Multiple sockets can be specified") flag.Parse() if *flVersion { showVersion() return } if flHosts.Len() == 0 { defaultHost := os.Getenv("DOCKER_HOST") if defaultHost == "" || *flDaemon { // If we do not have a host, default to unix socket defaultHost = fmt.Sprintf("unix://%s", api.DEFAULTUNIXSOCKET) } flHosts.Set(defaultHost) } if *bridgeName != "" && *bridgeIp != "" { log.Fatal("You specified -b & --bip, mutually exclusive options. Please specify only one.") } if *flDebug { os.Setenv("DEBUG", "1") } docker.GITCOMMIT = GITCOMMIT docker.VERSION = VERSION if *flDaemon { if flag.NArg() != 0 { flag.Usage() return } eng, err := engine.New(*flRoot) if err != nil { log.Fatal(err) } // Load plugin: httpapi job := eng.Job("initserver") job.Setenv("Pidfile", *pidfile) job.Setenv("Root", *flRoot) job.SetenvBool("AutoRestart", *flAutoRestart) job.SetenvList("Dns", flDns.GetAll()) job.SetenvBool("EnableIptables", *flEnableIptables) job.SetenvBool("EnableIpForward", *flEnableIpForward) job.Setenv("BridgeIface", *bridgeName) job.Setenv("BridgeIP", *bridgeIp) job.Setenv("DefaultIp", *flDefaultIp) job.SetenvBool("InterContainerCommunication", *flInterContainerComm) job.Setenv("GraphDriver", *flGraphDriver) job.SetenvInt("Mtu", *flMtu) if err := job.Run(); err != nil { log.Fatal(err) } // Serve api job = eng.Job("serveapi", flHosts.GetAll()...) job.SetenvBool("Logging", true) job.SetenvBool("EnableCors", *flEnableCors) job.Setenv("Version", VERSION) if err := job.Run(); err != nil { log.Fatal(err) } } else { if flHosts.Len() > 1 { log.Fatal("Please specify only one -H") } protoAddrParts := strings.SplitN(flHosts.GetAll()[0], "://", 2) if err := docker.ParseCommands(protoAddrParts[0], protoAddrParts[1], flag.Args()...); err != nil { if sterr, ok := err.(*utils.StatusError); ok { if sterr.Status != "" { log.Println(sterr.Status) } os.Exit(sterr.StatusCode) } log.Fatal(err) } } } func showVersion() { fmt.Printf("Docker version %s, build %s\n", VERSION, GITCOMMIT) }