/*
* 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 (
"fmt"
"net"
"net/http"
"os"
"strconv"
"strings"
"time"
"github.com/minio/cli"
)
var serverCmd = cli.Command{
Name: "server",
Usage: "Start object storage server.",
Flags: []cli.Flag{
cli.StringFlag{
Name: "address",
Value: ":9000",
Usage: "Specify custom server \"ADDRESS:PORT\", defaults to \":9000\".",
},
cli.StringFlag{
Name: "ignore-disks",
Usage: "Specify comma separated list of disks that are offline.",
},
},
Action: serverMain,
CustomHelpTemplate: `NAME:
minio {{.Name}} - {{.Usage}}
USAGE:
minio {{.Name}} [OPTIONS] PATH [PATH...]
OPTIONS:
{{range .Flags}}{{.}}
{{end}}
ENVIRONMENT VARIABLES:
ACCESS:
MINIO_ACCESS_KEY: Access key string of 5 to 20 characters in length.
MINIO_SECRET_KEY: Secret key string of 8 to 40 characters in length.
CACHING:
MINIO_CACHE_SIZE: Set total cache size in NN[GB|MB|KB]. Defaults to 8GB.
MINIO_CACHE_EXPIRY: Set cache expiration duration in NN[h|m|s]. Defaults to 72 hours.
EXAMPLES:
1. Start minio server.
$ minio {{.Name}} /home/shared
2. Start minio server bound to a specific IP:PORT, when you have multiple network interfaces.
$ minio {{.Name}} --address 192.168.1.101:9000 /home/shared
3. Start minio server on Windows.
$ minio {{.Name}} C:\MyShare
4. Start minio server on 12 disks to enable erasure coded layer with 6 data and 6 parity.
$ minio {{.Name}} /mnt/export1/backend /mnt/export2/backend /mnt/export3/backend /mnt/export4/backend \
/mnt/export5/backend /mnt/export6/backend /mnt/export7/backend /mnt/export8/backend /mnt/export9/backend \
/mnt/export10/backend /mnt/export11/backend /mnt/export12/backend
5. Start minio server on 12 disks while ignoring two disks for initialization.
$ minio {{.Name}} --ignore-disks=/mnt/export1/backend,/mnt/export2/backend /mnt/export1/backend \
/mnt/export2/backend /mnt/export3/backend /mnt/export4/backend /mnt/export5/backend /mnt/export6/backend \
/mnt/export7/backend /mnt/export8/backend /mnt/export9/backend /mnt/export10/backend /mnt/export11/backend \
/mnt/export12/backend
`,
}
type serverCmdConfig struct {
serverAddr string
disks []string
ignoredDisks []string
}
// configureServer configure a new server instance
func configureServer(srvCmdConfig serverCmdConfig) *MuxServer {
// Minio server config
apiServer := &MuxServer{
Server: http.Server{
Addr: srvCmdConfig.serverAddr,
// Adding timeout of 10 minutes for unresponsive client connections.
ReadTimeout: 10 * time.Minute,
WriteTimeout: 10 * time.Minute,
Handler: configureServerHandler(srvCmdConfig),
MaxHeaderBytes: 1 << 20,
},
}
// Returns configured HTTP server.
return apiServer
}
// getListenIPs - gets all the ips to listen on.
func getListenIPs(httpServerConf *http.Server) (hosts []string, port string) {
host, port, err := net.SplitHostPort(httpServerConf.Addr)
fatalIf(err, "Unable to parse host address.", httpServerConf.Addr)
if host != "" {
hosts = append(hosts, host)
return hosts, port
}
addrs, err := net.InterfaceAddrs()
fatalIf(err, "Unable to determine network interface address.")
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)
}
}
}
return hosts, port
}
// Finalizes the endpoints based on the host list and port.
func finalizeEndpoints(tls bool, apiServer *http.Server) (endPoints []string) {
// Get list of listen ips and port.
hosts, port := getListenIPs(apiServer)
// Verify current scheme.
scheme := "http"
if tls {
scheme = "https"
}
ips := getIPsFromHosts(hosts)
// Construct proper endpoints.
for _, ip := range ips {
endPoints = append(endPoints, fmt.Sprintf("%s://%s:%s", scheme, ip.String(), port))
}
// Success.
return endPoints
}
// initServerConfig initialize server config.
func initServerConfig(c *cli.Context) {
// Save new config.
err := serverConfig.Save()
fatalIf(err, "Unable to save config.")
// Fetch max conn limit from environment variable.
if maxConnStr := os.Getenv("MINIO_MAXCONN"); maxConnStr != "" {
// We need to parse to its integer value.
var err error
globalMaxConn, err = strconv.Atoi(maxConnStr)
fatalIf(err, "Unable to convert MINIO_MAXCONN=%s environment variable into its integer value.", maxConnStr)
}
// Fetch max cache size from environment variable.
if maxCacheSizeStr := os.Getenv("MINIO_CACHE_SIZE"); maxCacheSizeStr != "" {
// We need to parse cache size to its integer value.
var err error
globalMaxCacheSize, err = strconvBytes(maxCacheSizeStr)
fatalIf(err, "Unable to convert MINIO_CACHE_SIZE=%s environment variable into its integer value.", maxCacheSizeStr)
}
// Fetch cache expiry from environment variable.
if cacheExpiryStr := os.Getenv("MINIO_CACHE_EXPIRY"); cacheExpiryStr != "" {
// We need to parse cache expiry to its time.Duration value.
var err error
globalCacheExpiry, err = time.ParseDuration(cacheExpiryStr)
fatalIf(err, "Unable to convert MINIO_CACHE_EXPIRY=%s environment variable into its time.Duration value.", cacheExpiryStr)
}
// 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(errInvalidArgument, "Invalid access key.")
}
if !isValidSecretKey.MatchString(secretKey) {
fatalIf(errInvalidArgument, "Invalid secret key.")
}
serverConfig.SetCredential(credential{
AccessKeyID: accessKey,
SecretAccessKey: secretKey,
})
}
// Set maxOpenFiles, This is necessary since default operating
// system limits of 1024, 2048 are not enough for Minio server.
setMaxOpenFiles()
// Do not fail if this is not allowed, lower limits are fine as well.
}
// Check server arguments.
func checkServerSyntax(c *cli.Context) {
if !c.Args().Present() || c.Args().First() == "help" {
cli.ShowCommandHelpAndExit(c, "server", 1)
}
}
// Extract port number from address address should be of the form host:port.
func getPort(address string) int {
_, portStr, _ := net.SplitHostPort(address)
// If port empty, default to port '80'
if portStr == "" {
portStr = "80"
// if SSL is enabled, choose port as "443" instead.
if isSSL() {
portStr = "443"
}
}
// Return converted port number.
portInt, err := strconv.Atoi(portStr)
fatalIf(err, "Invalid port number.")
return portInt
}
// serverMain handler called for 'minio server' command.
func serverMain(c *cli.Context) {
// Check 'server' cli arguments.
checkServerSyntax(c)
// Initialize server config.
initServerConfig(c)
// If https.
tls := isSSL()
// Server address.
serverAddress := c.String("address")
// Check if requested port is available.
port := getPort(serverAddress)
err := checkPortAvailability(port)
fatalIf(err, "Port unavailable %d", port)
// Disks to be ignored in server init, to skip format healing.
ignoredDisks := strings.Split(c.String("ignore-disks"), ",")
// Disks to be used in server init.
disks := c.Args()
// Configure server.
apiServer := configureServer(serverCmdConfig{
serverAddr: serverAddress,
disks: disks,
ignoredDisks: ignoredDisks,
})
// Fetch endpoints which we are going to serve from.
endPoints := finalizeEndpoints(tls, &apiServer.Server)
// Prints the formatted startup message.
printStartupMessage(endPoints)
// Start server.
// Configure TLS if certs are available.
if tls {
err = apiServer.ListenAndServeTLS(mustGetCertFile(), mustGetKeyFile())
} else {
// Fallback to http.
err = apiServer.ListenAndServe()
}
fatalIf(err, "Failed to start minio server.")
}