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minio/cmd/server-main.go

279 lines
8.5 KiB

/*
* Minio Cloud Storage, (C) 2015, 2016, 2017 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 cmd
import (
"net/http"
"os"
"os/signal"
"runtime"
"syscall"
"github.com/minio/cli"
"github.com/minio/dsync"
"github.com/minio/minio/pkg/errors"
miniohttp "github.com/minio/minio/pkg/http"
)
var serverFlags = []cli.Flag{
cli.StringFlag{
Name: "address",
Value: ":" + globalMinioPort,
Usage: "Bind to a specific ADDRESS:PORT, ADDRESS can be an IP or hostname.",
},
}
var serverCmd = cli.Command{
Name: "server",
Usage: "Start object storage server.",
Flags: append(serverFlags, globalFlags...),
Action: serverMain,
CustomHelpTemplate: `NAME:
{{.HelpName}} - {{.Usage}}
USAGE:
{{.HelpName}} {{if .VisibleFlags}}[FLAGS] {{end}}PATH [PATH...]
{{if .VisibleFlags}}
FLAGS:
{{range .VisibleFlags}}{{.}}
{{end}}{{end}}
ENVIRONMENT VARIABLES:
ACCESS:
MINIO_ACCESS_KEY: Custom username or access key of minimum 5 characters in length.
MINIO_SECRET_KEY: Custom password or secret key of minimum 8 characters in length.
BROWSER:
MINIO_BROWSER: To disable web browser access, set this value to "off".
REGION:
MINIO_REGION: To set custom region. By default it is "us-east-1".
UPDATE:
MINIO_UPDATE: To turn off in-place upgrades, set this value to "off".
EXAMPLES:
1. Start minio server on "/home/shared" directory.
$ {{.HelpName}} /home/shared
2. Start minio server bound to a specific ADDRESS:PORT.
$ {{.HelpName}} --address 192.168.1.101:9000 /home/shared
3. Start erasure coded minio server on a 12 disks server.
$ {{.HelpName}} /mnt/export1/ /mnt/export2/ /mnt/export3/ /mnt/export4/ \
/mnt/export5/ /mnt/export6/ /mnt/export7/ /mnt/export8/ /mnt/export9/ \
/mnt/export10/ /mnt/export11/ /mnt/export12/
4. Start erasure coded distributed minio server on a 4 node setup with 1 drive each. Run following commands on all the 4 nodes.
$ export MINIO_ACCESS_KEY=minio
$ export MINIO_SECRET_KEY=miniostorage
$ {{.HelpName}} http://192.168.1.11/mnt/export/ http://192.168.1.12/mnt/export/ \
http://192.168.1.13/mnt/export/ http://192.168.1.14/mnt/export/
`,
}
func serverHandleCmdArgs(ctx *cli.Context) {
// Handle common command args.
handleCommonCmdArgs(ctx)
// Server address.
serverAddr := ctx.String("address")
fatalIf(CheckLocalServerAddr(serverAddr), "Invalid address ‘%s’ in command line argument.", serverAddr)
var setupType SetupType
var err error
globalMinioAddr, globalEndpoints, setupType, err = CreateEndpoints(serverAddr, ctx.Args()...)
fatalIf(err, "Invalid command line arguments server=‘%s’, args=%s", serverAddr, ctx.Args())
globalMinioHost, globalMinioPort = mustSplitHostPort(globalMinioAddr)
if runtime.GOOS == "darwin" {
// On macOS, if a process already listens on LOCALIPADDR:PORT, net.Listen() falls back
// to IPv6 address ie minio will start listening on IPv6 address whereas another
// (non-)minio process is listening on IPv4 of given port.
// To avoid this error sutiation we check for port availability only for macOS.
fatalIf(checkPortAvailability(globalMinioPort), "Port %d already in use", globalMinioPort)
}
globalIsXL = (setupType == XLSetupType)
globalIsDistXL = (setupType == DistXLSetupType)
if globalIsDistXL {
globalIsXL = true
}
}
func serverHandleEnvVars() {
// Handle common environment variables.
handleCommonEnvVars()
if serverRegion := os.Getenv("MINIO_REGION"); serverRegion != "" {
// region Envs are set globally.
globalIsEnvRegion = true
globalServerRegion = serverRegion
}
}
// serverMain handler called for 'minio server' command.
func serverMain(ctx *cli.Context) {
if !ctx.Args().Present() || ctx.Args().First() == "help" {
cli.ShowCommandHelpAndExit(ctx, "server", 1)
}
// Get "json" flag from command line argument and
// enable json and quite modes if jason flag is turned on.
jsonFlag := ctx.Bool("json") || ctx.GlobalBool("json")
if jsonFlag {
log.EnableJSON()
}
// Get quiet flag from command line argument.
quietFlag := ctx.Bool("quiet") || ctx.GlobalBool("quiet")
if quietFlag {
log.EnableQuiet()
}
// Handle all server command args.
serverHandleCmdArgs(ctx)
// Handle all server environment vars.
serverHandleEnvVars()
// Create certs path.
fatalIf(createConfigDir(), "Unable to create configuration directories.")
// Initialize server config.
initConfig()
// Init the error tracing module.
errors.Init(GOPATH, "github.com/minio/minio")
// Check and load SSL certificates.
var err error
globalPublicCerts, globalRootCAs, globalTLSCertificate, globalIsSSL, err = getSSLConfig()
fatalIf(err, "Invalid SSL certificate file")
// Is distributed setup, error out if no certificates are found for HTTPS endpoints.
if globalIsDistXL && globalEndpoints.IsHTTPS() && !globalIsSSL {
fatalIf(errInvalidArgument, "No certificates found for HTTPS endpoints (%s)", globalEndpoints)
}
if !quietFlag {
// Check for new updates from dl.minio.io.
mode := globalMinioModeFS
if globalIsDistXL {
mode = globalMinioModeDistXL
} else if globalIsXL {
mode = globalMinioModeXL
}
checkUpdate(mode)
}
// Set system resources to maximum.
errorIf(setMaxResources(), "Unable to change resource limit")
// Set nodes for dsync for distributed setup.
if globalIsDistXL {
clnts, myNode := newDsyncNodes(globalEndpoints)
fatalIf(dsync.Init(clnts, myNode), "Unable to initialize distributed locking clients")
}
// Initialize name space lock.
initNSLock(globalIsDistXL)
// Configure server.
var handler http.Handler
handler, err = configureServerHandler(globalEndpoints)
fatalIf(err, "Unable to configure one of server's RPC services.")
// Initialize S3 Peers inter-node communication only in distributed setup.
initGlobalS3Peers(globalEndpoints)
// Initialize Admin Peers inter-node communication only in distributed setup.
initGlobalAdminPeers(globalEndpoints)
globalHTTPServer = miniohttp.NewServer([]string{globalMinioAddr}, handler, globalTLSCertificate)
globalHTTPServer.ReadTimeout = globalConnReadTimeout
globalHTTPServer.WriteTimeout = globalConnWriteTimeout
globalHTTPServer.UpdateBytesReadFunc = globalConnStats.incInputBytes
globalHTTPServer.UpdateBytesWrittenFunc = globalConnStats.incOutputBytes
globalHTTPServer.ErrorLogFunc = errorIf
go func() {
globalHTTPServerErrorCh <- globalHTTPServer.Start()
}()
signal.Notify(globalOSSignalCh, os.Interrupt, syscall.SIGTERM)
newObject, err := newObjectLayer(globalEndpoints)
if err != nil {
errorIf(err, "Initializing object layer failed")
err = globalHTTPServer.Shutdown()
errorIf(err, "Unable to shutdown http server")
os.Exit(1)
}
globalObjLayerMutex.Lock()
globalObjectAPI = newObject
globalObjLayerMutex.Unlock()
// Prints the formatted startup message once object layer is initialized.
apiEndpoints := getAPIEndpoints(globalMinioAddr)
printStartupMessage(apiEndpoints)
// Set uptime time after object layer has initialized.
globalBootTime = UTCNow()
handleSignals()
}
// Initialize object layer with the supplied disks, objectLayer is nil upon any error.
func newObjectLayer(endpoints EndpointList) (newObject ObjectLayer, err error) {
// For FS only, directly use the disk.
isFS := len(endpoints) == 1
if isFS {
// Initialize new FS object layer.
return newFSObjectLayer(endpoints[0].Path)
}
// Initialize storage disks.
storageDisks, err := initStorageDisks(endpoints)
if err != nil {
return nil, err
}
// Wait for formatting disks for XL backend.
var formattedDisks []StorageAPI
// First disk argument check if it is local.
firstDisk := endpoints[0].IsLocal
formattedDisks, err = waitForFormatXLDisks(firstDisk, endpoints, storageDisks)
if err != nil {
return nil, err
}
// Cleanup objects that weren't successfully written into the namespace.
if err = houseKeeping(storageDisks); err != nil {
return nil, err
}
// Once XL formatted, initialize object layer.
newObject, err = newXLObjectLayer(formattedDisks)
if err != nil {
return nil, err
}
// XL initialized, return.
return newObject, nil
}