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moby--moby/docker/docker.go
2013-11-25 09:43:32 -08:00

112 lines
3.5 KiB
Go

package main
import (
"flag"
"fmt"
"github.com/dotcloud/docker"
"github.com/dotcloud/docker/engine"
"github.com/dotcloud/docker/sysinit"
"github.com/dotcloud/docker/utils"
"log"
"os"
"strings"
)
var (
GITCOMMIT string
VERSION string
)
func main() {
if selfPath := utils.SelfPath(); selfPath == "/sbin/init" || selfPath == "/.dockerinit" {
// Running in init mode
sysinit.SysInit()
return
}
// FIXME: Switch d and D ? (to be more sshd like)
flVersion := flag.Bool("v", false, "Print version information and quit")
flDaemon := flag.Bool("d", false, "Enable daemon mode")
flDebug := flag.Bool("D", false, "Enable debug mode")
flAutoRestart := flag.Bool("r", true, "Restart previously running containers")
bridgeName := flag.String("b", "", "Attach containers to a pre-existing network bridge; use 'none' to disable container networking")
pidfile := flag.String("p", "/var/run/docker.pid", "Path to use for daemon PID file")
flRoot := flag.String("g", "/var/lib/docker", "Path to use as the root of the docker runtime")
flEnableCors := flag.Bool("api-enable-cors", false, "Enable CORS headers in the remote API")
flDns := flag.String("dns", "", "Force docker to use specific DNS servers")
flHosts := utils.ListOpts{fmt.Sprintf("unix://%s", docker.DEFAULTUNIXSOCKET)}
flag.Var(&flHosts, "H", "Multiple tcp://host:port or unix://path/to/socket to bind in daemon mode, single connection otherwise")
flEnableIptables := flag.Bool("iptables", true, "Disable docker's addition of iptables rules")
flDefaultIp := flag.String("ip", "0.0.0.0", "Default IP address to use when binding container ports")
flInterContainerComm := flag.Bool("icc", true, "Enable inter-container communication")
flGraphDriver := flag.String("s", "", "Force the docker runtime to use a specific storage driver")
flag.Parse()
if *flVersion {
showVersion()
return
}
if len(flHosts) > 1 {
flHosts = flHosts[1:] //trick to display a nice default value in the usage
}
for i, flHost := range flHosts {
host, err := utils.ParseHost(docker.DEFAULTHTTPHOST, docker.DEFAULTHTTPPORT, flHost)
if err == nil {
flHosts[i] = host
} else {
log.Fatal(err)
}
}
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("initapi")
job.Setenv("Pidfile", *pidfile)
job.Setenv("Root", *flRoot)
job.SetenvBool("AutoRestart", *flAutoRestart)
job.SetenvBool("EnableCors", *flEnableCors)
job.Setenv("Dns", *flDns)
job.SetenvBool("EnableIptables", *flEnableIptables)
job.Setenv("BridgeIface", *bridgeName)
job.Setenv("DefaultIp", *flDefaultIp)
job.SetenvBool("InterContainerCommunication", *flInterContainerComm)
job.Setenv("GraphDriver", *flGraphDriver)
if err := job.Run(); err != nil {
log.Fatal(err)
}
// Serve api
job = eng.Job("serveapi", flHosts...)
job.SetenvBool("Logging", true)
if err := job.Run(); err != nil {
log.Fatal(err)
}
} else {
if len(flHosts) > 1 {
log.Fatal("Please specify only one -H")
}
protoAddrParts := strings.SplitN(flHosts[0], "://", 2)
if err := docker.ParseCommands(protoAddrParts[0], protoAddrParts[1], flag.Args()...); err != nil {
if sterr, ok := err.(*utils.StatusError); ok {
os.Exit(sterr.Status)
}
log.Fatal(err)
}
}
}
func showVersion() {
fmt.Printf("Docker version %s, build %s\n", VERSION, GITCOMMIT)
}