This commit replaces the call to `errorIf` with `fatalIf`, so that the minio server exits with an non-zero exit status if something fails, e.g. the port was already openend by another process.
320 lines
8.9 KiB
Go
320 lines
8.9 KiB
Go
/*
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* Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package main
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import (
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"errors"
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"fmt"
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"net"
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"net/http"
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"os"
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"runtime"
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"strconv"
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"strings"
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"syscall"
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"github.com/minio/cli"
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"github.com/minio/mc/pkg/console"
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)
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var serverCmd = cli.Command{
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Name: "server",
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Usage: "Start Minio cloud storage server.",
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Flags: []cli.Flag{
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cli.StringFlag{
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Name: "address",
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Value: ":9000",
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},
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},
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Action: serverMain,
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CustomHelpTemplate: `NAME:
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minio {{.Name}} - {{.Usage}}
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USAGE:
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minio {{.Name}} [OPTIONS] PATH
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OPTIONS:
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{{range .Flags}}{{.}}
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{{end}}
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ENVIRONMENT VARIABLES:
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MINIO_ACCESS_KEY: Access key string of 5 to 20 characters in length.
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MINIO_SECRET_KEY: Secret key string of 8 to 40 characters in length.
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EXAMPLES:
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1. Start minio server.
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$ minio {{.Name}} /home/shared
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2. Start minio server bound to a specific IP:PORT, when you have multiple network interfaces.
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$ minio {{.Name}} --address 192.168.1.101:9000 /home/shared
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3. Start minio server on Windows.
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$ minio {{.Name}} C:\MyShare
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4. Start minio server 8 disks to enable erasure coded layer with 4 data and 4 parity.
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$ minio {{.Name}} /mnt/export1/backend /mnt/export2/backend /mnt/export3/backend /mnt/export4/backend \
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/mnt/export5/backend /mnt/export6/backend /mnt/export7/backend /mnt/export8/backend
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`,
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}
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type serverCmdConfig struct {
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serverAddr string
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exportPaths []string
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}
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// configureServer configure a new server instance
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func configureServer(srvCmdConfig serverCmdConfig) *http.Server {
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// Minio server config
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apiServer := &http.Server{
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Addr: srvCmdConfig.serverAddr,
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Handler: configureServerHandler(srvCmdConfig),
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MaxHeaderBytes: 1 << 20,
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}
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// Returns configured HTTP server.
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return apiServer
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}
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// getListenIPs - gets all the ips to listen on.
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func getListenIPs(httpServerConf *http.Server) (hosts []string, port string) {
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host, port, err := net.SplitHostPort(httpServerConf.Addr)
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fatalIf(err, "Unable to parse host port.")
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switch {
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case host != "":
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hosts = append(hosts, host)
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default:
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addrs, err := net.InterfaceAddrs()
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fatalIf(err, "Unable to determine network interface address.")
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for _, addr := range addrs {
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if addr.Network() == "ip+net" {
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host := strings.Split(addr.String(), "/")[0]
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if ip := net.ParseIP(host); ip.To4() != nil {
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hosts = append(hosts, host)
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}
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}
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}
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}
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return hosts, port
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}
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// Print listen ips.
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func printListenIPs(tls bool, hosts []string, port string) {
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for _, host := range hosts {
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if tls {
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console.Printf(" https://%s:%s\n", host, port)
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} else {
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console.Printf(" http://%s:%s\n", host, port)
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}
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}
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}
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// initServerConfig initialize server config.
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func initServerConfig(c *cli.Context) {
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// Save new config.
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err := serverConfig.Save()
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fatalIf(err, "Unable to save config.")
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// Fetch access keys from environment variables if any and update the config.
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accessKey := os.Getenv("MINIO_ACCESS_KEY")
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secretKey := os.Getenv("MINIO_SECRET_KEY")
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// Validate if both keys are specified and they are valid save them.
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if accessKey != "" && secretKey != "" {
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if !isValidAccessKey.MatchString(accessKey) {
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fatalIf(errInvalidArgument, "Invalid access key.")
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}
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if !isValidSecretKey.MatchString(secretKey) {
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fatalIf(errInvalidArgument, "Invalid secret key.")
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}
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serverConfig.SetCredential(credential{
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AccessKeyID: accessKey,
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SecretAccessKey: secretKey,
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})
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}
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// Set maxOpenFiles, This is necessary since default operating
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// system limits of 1024, 2048 are not enough for Minio server.
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setMaxOpenFiles()
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// Do not fail if this is not allowed, lower limits are fine as well.
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}
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// Check server arguments.
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func checkServerSyntax(c *cli.Context) {
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if !c.Args().Present() || c.Args().First() == "help" {
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cli.ShowCommandHelpAndExit(c, "server", 1)
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}
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}
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// Extract port number from address address should be of the form host:port.
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func getPort(address string) int {
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_, portStr, err := net.SplitHostPort(address)
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fatalIf(err, "Unable to parse host port.")
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portInt, err := strconv.Atoi(portStr)
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fatalIf(err, "Invalid port number.")
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return portInt
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}
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// Make sure that none of the other processes are listening on the
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// specified port on any of the interfaces.
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//
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// On linux if a process is listening on 127.0.0.1:9000 then Listen()
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// on ":9000" fails with the error "port already in use".
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// However on Mac OSX Listen() on ":9000" falls back to the IPv6 address.
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// This causes confusion on Mac OSX that minio server is not reachable
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// on 127.0.0.1 even though minio server is running. So before we start
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// the minio server we make sure that the port is free on all the IPs.
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func checkPortAvailability(port int) {
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isAddrInUse := func(err error) bool {
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// Check if the syscall error is EADDRINUSE.
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// EADDRINUSE is the system call error if another process is
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// already listening at the specified port.
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neterr, ok := err.(*net.OpError)
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if !ok {
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return false
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}
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osErr, ok := neterr.Err.(*os.SyscallError)
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if !ok {
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return false
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}
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sysErr, ok := osErr.Err.(syscall.Errno)
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if !ok {
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return false
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}
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if sysErr != syscall.EADDRINUSE {
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return false
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}
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return true
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}
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ifcs, err := net.Interfaces()
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if err != nil {
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fatalIf(err, "Unable to list interfaces.")
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}
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for _, ifc := range ifcs {
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addrs, err := ifc.Addrs()
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if err != nil {
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fatalIf(err, "Unable to list addresses on interface %s.", ifc.Name)
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}
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for _, addr := range addrs {
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ipnet, ok := addr.(*net.IPNet)
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if !ok {
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errorIf(errors.New(""), "Failed to assert type on (*net.IPNet) interface.")
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continue
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}
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ip := ipnet.IP
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network := "tcp4"
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if ip.To4() == nil {
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network = "tcp6"
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}
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tcpAddr := net.TCPAddr{IP: ip, Port: port, Zone: ifc.Name}
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l, err := net.ListenTCP(network, &tcpAddr)
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if err != nil {
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if isAddrInUse(err) {
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// Fail if port is already in use.
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fatalIf(err, "Unable to listen on %s:%.d.", tcpAddr.IP, tcpAddr.Port)
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} else {
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// Ignore other errors.
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continue
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}
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}
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if err = l.Close(); err != nil {
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fatalIf(err, "Unable to close listener on %s:%.d.", tcpAddr.IP, tcpAddr.Port)
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}
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}
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}
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}
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func serverMain(c *cli.Context) {
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// check 'server' cli arguments.
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checkServerSyntax(c)
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// Initialize server config.
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initServerConfig(c)
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// Server address.
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serverAddress := c.String("address")
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host, port, _ := net.SplitHostPort(serverAddress)
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// If port empty, default to port '80'
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if port == "" {
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port = "80"
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// if SSL is enabled, choose port as "443" instead.
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if isSSL() {
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port = "443"
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}
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}
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// Check if requested port is available.
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checkPortAvailability(getPort(net.JoinHostPort(host, port)))
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// Save all command line args as export paths.
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exportPaths := c.Args()
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// Configure server.
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apiServer := configureServer(serverCmdConfig{
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serverAddr: serverAddress,
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exportPaths: exportPaths,
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})
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// Credential.
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cred := serverConfig.GetCredential()
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// Region.
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region := serverConfig.GetRegion()
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// Print credentials and region.
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console.Println("\n" + cred.String() + " " + colorMagenta("Region: ") + colorWhite(region))
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hosts, port := getListenIPs(apiServer) // get listen ips and port.
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tls := apiServer.TLSConfig != nil // 'true' if TLS is enabled.
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console.Println("\nMinio Object Storage:")
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// Print api listen ips.
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printListenIPs(tls, hosts, port)
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console.Println("\nMinio Browser:")
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// Print browser listen ips.
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printListenIPs(tls, hosts, port)
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console.Println("\nTo configure Minio Client:")
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// Figure out right endpoint for 'mc'.
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endpoint := fmt.Sprintf("http://%s:%s", hosts[0], port)
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if tls {
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endpoint = fmt.Sprintf("https://%s:%s", hosts[0], port)
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}
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// Download 'mc' info.
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if runtime.GOOS == "windows" {
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console.Printf(" Download 'mc' from https://dl.minio.io/client/mc/release/%s-%s/mc.exe\n", runtime.GOOS, runtime.GOARCH)
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console.Printf(" $ mc.exe config host add myminio %s %s %s\n", endpoint, cred.AccessKeyID, cred.SecretAccessKey)
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} else {
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console.Printf(" $ wget https://dl.minio.io/client/mc/release/%s-%s/mc\n", runtime.GOOS, runtime.GOARCH)
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console.Printf(" $ chmod 755 mc\n")
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console.Printf(" $ ./mc config host add myminio %s %s %s\n", endpoint, cred.AccessKeyID, cred.SecretAccessKey)
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}
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// Start server.
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var err error
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// Configure TLS if certs are available.
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if isSSL() {
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err = apiServer.ListenAndServeTLS(mustGetCertFile(), mustGetKeyFile())
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} else {
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// Fallback to http.
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err = apiServer.ListenAndServe()
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}
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fatalIf(err, "Failed to start minio server.")
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}
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