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353 lines
11 KiB
353 lines
11 KiB
/*
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* Minio Cloud Storage, (C) 2015, 2016, 2017, 2018 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 cmd
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import (
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"context"
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"fmt"
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"net/http"
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"os"
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"os/signal"
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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/dsync"
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xhttp "github.com/minio/minio/cmd/http"
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"github.com/minio/minio/cmd/logger"
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"github.com/minio/minio/pkg/certs"
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)
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func init() {
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logger.Init(GOPATH, GOROOT)
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logger.RegisterUIError(fmtError)
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}
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var serverFlags = []cli.Flag{
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cli.StringFlag{
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Name: "address",
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Value: ":" + globalMinioPort,
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Usage: "Bind to a specific ADDRESS:PORT, ADDRESS can be an IP or hostname.",
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},
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}
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var serverCmd = cli.Command{
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Name: "server",
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Usage: "Start object storage server.",
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Flags: append(serverFlags, globalFlags...),
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Action: serverMain,
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CustomHelpTemplate: `NAME:
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{{.HelpName}} - {{.Usage}}
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USAGE:
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{{.HelpName}} {{if .VisibleFlags}}[FLAGS] {{end}}DIR1 [DIR2..]
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{{.HelpName}} {{if .VisibleFlags}}[FLAGS] {{end}}DIR{1...64}
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DIR:
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DIR points to a directory on a filesystem. When you want to combine
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multiple drives into a single large system, pass one directory per
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filesystem separated by space. You may also use a '...' convention
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to abbreviate the directory arguments. Remote directories in a
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distributed setup are encoded as HTTP(s) URIs.
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{{if .VisibleFlags}}
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FLAGS:
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{{range .VisibleFlags}}{{.}}
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{{end}}{{end}}
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ENVIRONMENT VARIABLES:
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ACCESS:
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MINIO_ACCESS_KEY: Custom username or access key of minimum 3 characters in length.
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MINIO_SECRET_KEY: Custom password or secret key of minimum 8 characters in length.
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BROWSER:
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MINIO_BROWSER: To disable web browser access, set this value to "off".
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CACHE:
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MINIO_CACHE_DRIVES: List of mounted drives or directories delimited by ";".
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MINIO_CACHE_EXCLUDE: List of cache exclusion patterns delimited by ";".
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MINIO_CACHE_EXPIRY: Cache expiry duration in days.
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MINIO_CACHE_MAXUSE: Maximum permitted usage of the cache in percentage (0-100).
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DOMAIN:
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MINIO_DOMAIN: To enable virtual-host-style requests, set this value to Minio host domain name.
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WORM:
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MINIO_WORM: To turn on Write-Once-Read-Many in server, set this value to "on".
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BUCKET-DNS:
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MINIO_DOMAIN: To enable bucket DNS requests, set this value to Minio host domain name.
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MINIO_PUBLIC_IPS: To enable bucket DNS requests, set this value to list of Minio host public IP(s) delimited by ",".
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MINIO_ETCD_ENDPOINTS: To enable bucket DNS requests, set this value to list of etcd endpoints delimited by ",".
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EXAMPLES:
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1. Start minio server on "/home/shared" directory.
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$ {{.HelpName}} /home/shared
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2. Start minio server bound to a specific ADDRESS:PORT.
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$ {{.HelpName}} --address 192.168.1.101:9000 /home/shared
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3. Start minio server and enable virtual-host-style requests.
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$ export MINIO_DOMAIN=mydomain.com
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$ {{.HelpName}} --address mydomain.com:9000 /mnt/export
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4. Start erasure coded minio server on a node with 64 drives.
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$ {{.HelpName}} /mnt/export{1...64}
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5. Start distributed minio server on an 8 node setup with 8 drives each. Run following command on all the 8 nodes.
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$ export MINIO_ACCESS_KEY=minio
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$ export MINIO_SECRET_KEY=miniostorage
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$ {{.HelpName}} http://node{1...8}.example.com/mnt/export/{1...8}
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6. Start minio server with edge caching enabled.
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$ export MINIO_CACHE_DRIVES="/mnt/drive1;/mnt/drive2;/mnt/drive3;/mnt/drive4"
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$ export MINIO_CACHE_EXCLUDE="bucket1/*;*.png"
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$ export MINIO_CACHE_EXPIRY=40
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$ export MINIO_CACHE_MAXUSE=80
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$ {{.HelpName}} /home/shared
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`,
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}
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// Checks if endpoints are either available through environment
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// or command line, returns false if both fails.
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func endpointsPresent(ctx *cli.Context) bool {
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_, ok := os.LookupEnv("MINIO_ENDPOINTS")
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if !ok {
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ok = ctx.Args().Present()
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}
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return ok
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}
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func serverHandleCmdArgs(ctx *cli.Context) {
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// Handle common command args.
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handleCommonCmdArgs(ctx)
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// Server address.
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serverAddr := ctx.String("address")
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logger.FatalIf(CheckLocalServerAddr(serverAddr), "Unable to validate passed arguments")
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var setupType SetupType
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var err error
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if len(ctx.Args()) > serverCommandLineArgsMax {
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uErr := uiErrInvalidErasureEndpoints(nil).Msg(fmt.Sprintf("Invalid total number of endpoints (%d) passed, supported upto 32 unique arguments",
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len(ctx.Args())))
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logger.FatalIf(uErr, "Unable to validate passed endpoints")
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}
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endpoints := strings.Fields(os.Getenv("MINIO_ENDPOINTS"))
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if len(endpoints) > 0 {
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globalMinioAddr, globalEndpoints, setupType, globalXLSetCount, globalXLSetDriveCount, err = createServerEndpoints(serverAddr, endpoints...)
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} else {
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globalMinioAddr, globalEndpoints, setupType, globalXLSetCount, globalXLSetDriveCount, err = createServerEndpoints(serverAddr, ctx.Args()...)
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}
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logger.FatalIf(err, "Invalid command line arguments")
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globalMinioHost, globalMinioPort = mustSplitHostPort(globalMinioAddr)
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// On macOS, if a process already listens on LOCALIPADDR:PORT, net.Listen() falls back
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// to IPv6 address ie minio will start listening on IPv6 address whereas another
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// (non-)minio process is listening on IPv4 of given port.
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// To avoid this error sutiation we check for port availability.
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logger.FatalIf(checkPortAvailability(globalMinioPort), "Unable to start the server")
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globalIsXL = (setupType == XLSetupType)
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globalIsDistXL = (setupType == DistXLSetupType)
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if globalIsDistXL {
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globalIsXL = true
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}
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}
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func serverHandleEnvVars() {
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// Handle common environment variables.
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handleCommonEnvVars()
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if serverRegion := os.Getenv("MINIO_REGION"); serverRegion != "" {
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// region Envs are set globally.
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globalIsEnvRegion = true
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globalServerRegion = serverRegion
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}
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}
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// serverMain handler called for 'minio server' command.
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func serverMain(ctx *cli.Context) {
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if ctx.Args().First() == "help" || !endpointsPresent(ctx) {
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cli.ShowCommandHelpAndExit(ctx, "server", 1)
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}
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// Disable logging until server initialization is complete, any
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// error during initialization will be shown as a fatal message
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logger.Disable = true
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// Get "json" flag from command line argument and
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// enable json and quite modes if jason flag is turned on.
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jsonFlag := ctx.IsSet("json") || ctx.GlobalIsSet("json")
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if jsonFlag {
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logger.EnableJSON()
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}
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// Get quiet flag from command line argument.
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quietFlag := ctx.IsSet("quiet") || ctx.GlobalIsSet("quiet")
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if quietFlag {
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logger.EnableQuiet()
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}
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// Handle all server command args.
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serverHandleCmdArgs(ctx)
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// Handle all server environment vars.
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serverHandleEnvVars()
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// Create certs path.
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logger.FatalIf(createConfigDir(), "Unable to initialize configuration files")
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// Initialize server config.
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initConfig()
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// Load logger subsystem
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loadLoggers()
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// Check and load SSL certificates.
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var err error
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globalPublicCerts, globalRootCAs, globalTLSCerts, globalIsSSL, err = getSSLConfig()
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logger.FatalIf(err, "Unable to load the TLS configuration")
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// Is distributed setup, error out if no certificates are found for HTTPS endpoints.
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if globalIsDistXL {
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if globalEndpoints.IsHTTPS() && !globalIsSSL {
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logger.Fatal(uiErrNoCertsAndHTTPSEndpoints(nil), "Unable to start the server")
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}
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if !globalEndpoints.IsHTTPS() && globalIsSSL {
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logger.Fatal(uiErrCertsAndHTTPEndpoints(nil), "Unable to start the server")
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}
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}
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if !quietFlag {
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// Check for new updates from dl.minio.io.
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mode := globalMinioModeFS
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if globalIsDistXL {
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mode = globalMinioModeDistXL
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} else if globalIsXL {
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mode = globalMinioModeXL
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}
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checkUpdate(mode)
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}
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// Set system resources to maximum.
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logger.LogIf(context.Background(), setMaxResources())
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// Set nodes for dsync for distributed setup.
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if globalIsDistXL {
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globalDsync, err = dsync.New(newDsyncNodes(globalEndpoints))
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if err != nil {
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logger.Fatal(err, "Unable to initialize distributed locking on %s", globalEndpoints)
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}
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}
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// Initialize name space lock.
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initNSLock(globalIsDistXL)
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// Init global heal state
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initAllHealState(globalIsXL)
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// Configure server.
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var handler http.Handler
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handler, err = configureServerHandler(globalEndpoints)
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if err != nil {
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logger.Fatal(uiErrUnexpectedError(err), "Unable to configure one of server's RPC services")
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}
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// Initialize Admin Peers inter-node communication only in distributed setup.
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initGlobalAdminPeers(globalEndpoints)
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var getCert certs.GetCertificateFunc
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if globalTLSCerts != nil {
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getCert = globalTLSCerts.GetCertificate
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}
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globalHTTPServer = xhttp.NewServer([]string{globalMinioAddr}, criticalErrorHandler{handler}, getCert)
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globalHTTPServer.UpdateBytesReadFunc = globalConnStats.incInputBytes
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globalHTTPServer.UpdateBytesWrittenFunc = globalConnStats.incOutputBytes
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go func() {
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globalHTTPServerErrorCh <- globalHTTPServer.Start()
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}()
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signal.Notify(globalOSSignalCh, os.Interrupt, syscall.SIGTERM)
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newObject, err := newObjectLayer(globalEndpoints)
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if err != nil {
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// Stop watching for any certificate changes.
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globalTLSCerts.Stop()
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globalHTTPServer.Shutdown()
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logger.FatalIf(err, "Unable to initialize backend")
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}
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globalObjLayerMutex.Lock()
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globalObjectAPI = newObject
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globalObjLayerMutex.Unlock()
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// Populate existing buckets to the etcd backend
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if globalDNSConfig != nil {
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initFederatorBackend(newObject)
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}
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// Re-enable logging
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logger.Disable = false
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// Create new policy system.
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globalPolicySys = NewPolicySys()
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// Initialize policy system.
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if err := globalPolicySys.Init(newObjectLayerFn()); err != nil {
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logger.Fatal(err, "Unable to initialize policy system")
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}
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// Create new notification system.
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globalNotificationSys = NewNotificationSys(globalServerConfig, globalEndpoints)
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// Initialize notification system.
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if err := globalNotificationSys.Init(newObjectLayerFn()); err != nil {
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logger.Fatal(err, "Unable to initialize notification system")
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}
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// Prints the formatted startup message once object layer is initialized.
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apiEndpoints := getAPIEndpoints(globalMinioAddr)
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printStartupMessage(apiEndpoints)
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// Set uptime time after object layer has initialized.
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globalBootTime = UTCNow()
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handleSignals()
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}
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// Initialize object layer with the supplied disks, objectLayer is nil upon any error.
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func newObjectLayer(endpoints EndpointList) (newObject ObjectLayer, err error) {
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// For FS only, directly use the disk.
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isFS := len(endpoints) == 1
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if isFS {
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// Initialize new FS object layer.
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return NewFSObjectLayer(endpoints[0].Path)
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}
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format, err := waitForFormatXL(context.Background(), endpoints[0].IsLocal, endpoints, globalXLSetCount, globalXLSetDriveCount)
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if err != nil {
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return nil, err
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}
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return newXLSets(endpoints, format, len(format.XL.Sets), len(format.XL.Sets[0]))
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}
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