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/*
* Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"crypto/tls"
"errors"
"fmt"
"net"
"net/http"
"os"
"runtime"
"strconv"
"strings"
"syscall"
"github.com/minio/cli"
"github.com/minio/mc/pkg/console"
"github.com/minio/minio/pkg/fs"
"github.com/minio/minio/pkg/minhttp"
"github.com/minio/minio/pkg/probe"
)
var initCmd = cli.Command{
Name: "init",
Usage: "Initialize Minio cloud storage server.",
Flags: []cli.Flag{
cli.StringFlag{
Name: "address",
Value: ":9000",
},
},
Action: initMain,
CustomHelpTemplate: `NAME:
minio {{.Name}} - {{.Usage}}
USAGE:
minio {{.Name}} [OPTION VALUE] PATH
OPTIONS:
{{range .Flags}}{{.}}
{{end}}
ENVIRONMENT VARIABLES:
MINIO_ACCESS_KEY, MINIO_SECRET_KEY: Access and secret key to use.
EXAMPLES:
1. Start minio server on Linux.
$ minio {{.Name}} fs /home/shared
2. Start minio server on Windows.
$ minio {{.Name}} fs C:\MyShare
3. Start minio server bound to a specific IP:PORT, when you have multiple network interfaces.
$ minio {{.Name}} --address 192.168.1.101:9000 fs /home/shared
4. Start minio server with minimum free disk threshold to 5%
$ minio {{.Name}} fs /home/shared/Pictures
`,
}
var serverCmd = cli.Command{
Name: "server",
Usage: "Start Minio cloud storage server.",
Flags: []cli.Flag{},
Action: serverMain,
CustomHelpTemplate: `NAME:
minio {{.Name}} - {{.Usage}}
USAGE:
minio {{.Name}}
EXAMPLES:
1. Start minio server.
$ minio {{.Name}}
`,
}
// configureServer configure a new server instance
func configureServer(filesystem fs.Filesystem) *http.Server {
// Minio server config
apiServer := &http.Server{
Addr: serverConfig.GetAddr(),
Handler: configureServerHandler(filesystem),
MaxHeaderBytes: 1 << 20,
}
// Configure TLS if certs are available.
if isSSL() {
var e error
apiServer.TLSConfig = &tls.Config{}
apiServer.TLSConfig.Certificates = make([]tls.Certificate, 1)
apiServer.TLSConfig.Certificates[0], e = tls.LoadX509KeyPair(mustGetCertFile(), mustGetKeyFile())
fatalIf(probe.NewError(e), "Unable to load certificates.", nil)
}
// Returns configured HTTP server.
return apiServer
}
// Print listen ips.
func printListenIPs(httpServerConf *http.Server) {
host, port, e := net.SplitHostPort(httpServerConf.Addr)
fatalIf(probe.NewError(e), "Unable to split host port.", nil)
var hosts []string
switch {
case host != "":
hosts = append(hosts, host)
default:
addrs, e := net.InterfaceAddrs()
fatalIf(probe.NewError(e), "Unable to get interface address.", nil)
for _, addr := range addrs {
if addr.Network() == "ip+net" {
host := strings.Split(addr.String(), "/")[0]
if ip := net.ParseIP(host); ip.To4() != nil {
hosts = append(hosts, host)
}
}
}
}
for _, host := range hosts {
if httpServerConf.TLSConfig != nil {
console.Printf(" https://%s:%s\n", host, port)
} else {
console.Printf(" http://%s:%s\n", host, port)
}
}
}
// initServer initialize server
func initServer(c *cli.Context) {
host, port, _ := net.SplitHostPort(c.String("address"))
// If port empty, default to port '80'
if port == "" {
port = "80"
// if SSL is enabled, choose port as "443" instead.
if isSSL() {
port = "443"
}
}
// Join host and port.
serverConfig.SetAddr(net.JoinHostPort(host, port))
// Set backend FS type.
if c.Args().Get(0) == "fs" {
fsPath := strings.TrimSpace(c.Args().Get(1))
// Last argument is always a file system path, verify if it exists and is accessible.
_, e := os.Stat(fsPath)
fatalIf(probe.NewError(e), "Unable to validate the path", nil)
serverConfig.SetBackend(backend{
Type: "fs",
Disk: fsPath,
})
} // else { Add backend XL type here.
// Fetch access keys from environment variables if any and update the config.
accessKey := os.Getenv("MINIO_ACCESS_KEY")
secretKey := os.Getenv("MINIO_SECRET_KEY")
// Validate if both keys are specified and they are valid save them.
if accessKey != "" && secretKey != "" {
if !isValidAccessKey.MatchString(accessKey) {
fatalIf(probe.NewError(errInvalidArgument), "Access key does not have required length", nil)
}
if !isValidSecretKey.MatchString(secretKey) {
fatalIf(probe.NewError(errInvalidArgument), "Secret key does not have required length", nil)
}
serverConfig.SetCredential(credential{
AccessKeyID: accessKey,
SecretAccessKey: secretKey,
})
}
// Save new config.
err := serverConfig.Save()
fatalIf(err.Trace(), "Unable to save config.", nil)
// Successfully written.
backend := serverConfig.GetBackend()
if backend.Type == "fs" {
console.Println(colorGreen("Successfully initialized Minio at %s", backend.Disk))
}
}
// Check init arguments.
func checkInitSyntax(c *cli.Context) {
if !c.Args().Present() || c.Args().First() == "help" {
cli.ShowCommandHelpAndExit(c, "init", 1)
}
if len(c.Args()) > 2 {
fatalIf(probe.NewError(errInvalidArgument), "Unnecessary arguments passed. Please refer ‘minio init --help’.", nil)
}
path := strings.TrimSpace(c.Args().Last())
if path == "" {
fatalIf(probe.NewError(errInvalidArgument), "Path argument cannot be empty.", nil)
}
}
// Extract port number from address address should be of the form host:port.
func getPort(address string) int {
_, portStr, e := net.SplitHostPort(address)
fatalIf(probe.NewError(e), "Unable to split host port.", nil)
portInt, e := strconv.Atoi(portStr)
fatalIf(probe.NewError(e), "Invalid port number.", nil)
return portInt
}
// Make sure that none of the other processes are listening on the
// specified port on any of the interfaces.
//
// On linux if a process is listening on 127.0.0.1:9000 then Listen()
// on ":9000" fails with the error "port already in use".
// However on Mac OSX Listen() on ":9000" falls back to the IPv6 address.
// This causes confusion on Mac OSX that minio server is not reachable
// on 127.0.0.1 even though minio server is running. So before we start
// the minio server we make sure that the port is free on all the IPs.
func checkPortAvailability(port int) {
isAddrInUse := func(e error) bool {
// Check if the syscall error is EADDRINUSE.
// EADDRINUSE is the system call error if another process is
// already listening at the specified port.
neterr, ok := e.(*net.OpError)
if !ok {
return false
}
osErr, ok := neterr.Err.(*os.SyscallError)
if !ok {
return false
}
sysErr, ok := osErr.Err.(syscall.Errno)
if !ok {
return false
}
if sysErr != syscall.EADDRINUSE {
return false
}
return true
}
ifcs, e := net.Interfaces()
if e != nil {
fatalIf(probe.NewError(e), "Unable to list interfaces.", nil)
}
for _, ifc := range ifcs {
addrs, e := ifc.Addrs()
if e != nil {
fatalIf(probe.NewError(e), fmt.Sprintf("Unable to list addresses on interface %s.", ifc.Name), nil)
}
for _, addr := range addrs {
ipnet, ok := addr.(*net.IPNet)
if !ok {
errorIf(probe.NewError(errors.New("")), "Interface type assertion to (*net.IPNet) failed.", nil)
continue
}
ip := ipnet.IP
network := "tcp4"
if ip.To4() == nil {
network = "tcp6"
}
tcpAddr := net.TCPAddr{IP: ip, Port: port, Zone: ifc.Name}
l, e := net.ListenTCP(network, &tcpAddr)
if e != nil {
if isAddrInUse(e) {
// Fail if port is already in use.
fatalIf(probe.NewError(e), fmt.Sprintf("Unable to listen on IP %s, port %.d", tcpAddr.IP, tcpAddr.Port), nil)
} else {
// Ignore other errors.
continue
}
}
e = l.Close()
if e != nil {
fatalIf(probe.NewError(e), fmt.Sprintf("Unable to close listener on IP %s, port %.d", tcpAddr.IP, tcpAddr.Port), nil)
}
}
}
}
func initMain(c *cli.Context) {
// check 'init' cli arguments.
checkInitSyntax(c)
// Initialize server.
initServer(c)
}
func serverMain(c *cli.Context) {
if c.Args().Present() || c.Args().First() == "help" {
cli.ShowCommandHelpAndExit(c, "server", 1)
}
// get backend.
backend := serverConfig.GetBackend()
if backend.Type == "fs" {
// Initialize file system.
filesystem, err := fs.New(backend.Disk)
fatalIf(err.Trace(backend.Type, backend.Disk), "Initializing filesystem failed.", nil)
// Configure server.
apiServer := configureServer(filesystem)
// Credential.
cred := serverConfig.GetCredential()
// Region.
region := serverConfig.GetRegion()
// Print credentials and region.
console.Println("\n" + cred.String() + " " + colorMagenta("Region: ") + colorWhite(region))
console.Println("\nMinio Object Storage:")
// Print api listen ips.
printListenIPs(apiServer)
console.Println("\nMinio Browser:")
// Print browser listen ips.
printListenIPs(apiServer)
console.Println("\nTo configure Minio Client:")
// Download 'mc' links.
if runtime.GOOS == "windows" {
console.Println(" Download 'mc' from https://dl.minio.io/client/mc/release/" + runtime.GOOS + "-" + runtime.GOARCH + "/mc.exe")
console.Println(" $ mc.exe config host add myminio http://localhost:9000 " + cred.AccessKeyID + " " + cred.SecretAccessKey)
} else {
console.Println(" $ wget https://dl.minio.io/client/mc/release/" + runtime.GOOS + "-" + runtime.GOARCH + "/mc")
console.Println(" $ chmod 755 mc")
console.Println(" $ ./mc config host add myminio http://localhost:9000 " + cred.AccessKeyID + " " + cred.SecretAccessKey)
}
// Start server.
err = minhttp.ListenAndServe(apiServer)
errorIf(err.Trace(), "Failed to start the minio server.", nil)
return
}
console.Println(colorGreen("No known backends configured, please use ‘minio init --help’ to initialize a backend."))
}