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a49d4a9cb2
The new auto healing model selects one node always responsible for auto-healing the whole cluster, erasure set by erasure set. If that node dies, another node will be elected as a leading operator to perform healing. This code also adds a goroutine which checks each 10 minutes if there are any new unformatted disks and performs its healing in that case, only the erasure set which has the new disk will be healed.
405 lines
13 KiB
Go
405 lines
13 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2015-2019 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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"encoding/gob"
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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/v2"
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"github.com/minio/minio/cmd/config"
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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/auth"
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"github.com/minio/minio/pkg/certs"
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"github.com/minio/minio/pkg/color"
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"github.com/minio/minio/pkg/env"
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)
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func init() {
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logger.Init(GOPATH, GOROOT)
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logger.RegisterError(config.FmtError)
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gob.Register(VerifyFileError(""))
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gob.Register(DeleteFileError(""))
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}
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// ServerFlags - server command specific flags
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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: ":" + globalMinioDefaultPort,
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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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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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KMS:
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MINIO_KMS_VAULT_ENDPOINT: To enable Vault as KMS,set this value to Vault endpoint.
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MINIO_KMS_VAULT_APPROLE_ID: To enable Vault as KMS,set this value to Vault AppRole ID.
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MINIO_KMS_VAULT_APPROLE_SECRET: To enable Vault as KMS,set this value to Vault AppRole Secret ID.
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MINIO_KMS_VAULT_KEY_NAME: To enable Vault as KMS,set this value to Vault encryption key-ring name.
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EXAMPLES:
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1. Start minio server on "/home/shared" directory.
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{{.Prompt}} {{.HelpName}} /home/shared
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2. Start minio server bound to a specific ADDRESS:PORT.
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{{.Prompt}} {{.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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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_DOMAIN{{.AssignmentOperator}}mydomain.com
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{{.Prompt}} {{.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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{{.Prompt}} {{.HelpName}} /mnt/export{1...64}
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5. Start distributed minio server on an 32 node setup with 32 drives each. Run following command on all the 32 nodes.
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_ACCESS_KEY{{.AssignmentOperator}}minio
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_SECRET_KEY{{.AssignmentOperator}}miniostorage
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{{.Prompt}} {{.HelpName}} http://node{1...32}.example.com/mnt/export/{1...32}
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6. Start minio server with KMS enabled.
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_KMS_VAULT_APPROLE_ID{{.AssignmentOperator}}9b56cc08-8258-45d5-24a3-679876769126
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_KMS_VAULT_APPROLE_SECRET{{.AssignmentOperator}}4e30c52f-13e4-a6f5-0763-d50e8cb4321f
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_KMS_VAULT_ENDPOINT{{.AssignmentOperator}}https://vault-endpoint-ip:8200
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_KMS_VAULT_KEY_NAME{{.AssignmentOperator}}my-minio-key
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{{.Prompt}} {{.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 := env.Lookup(config.EnvEndpoints)
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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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logger.FatalIf(CheckLocalServerAddr(globalCLIContext.Addr), "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 := config.ErrInvalidErasureEndpoints(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(env.Get(config.EnvEndpoints, ""))
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if len(endpoints) > 0 {
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globalMinioAddr, globalEndpoints, setupType, globalXLSetCount, globalXLSetDriveCount, err = createServerEndpoints(globalCLIContext.Addr, endpoints...)
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} else {
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globalMinioAddr, globalEndpoints, setupType, globalXLSetCount, globalXLSetDriveCount, err = createServerEndpoints(globalCLIContext.Addr, ctx.Args()...)
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}
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logger.FatalIf(err, "Invalid command line arguments")
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logger.LogIf(context.Background(), checkEndpointsSubOptimal(ctx, setupType, globalEndpoints))
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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(globalMinioHost, 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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accessKey := env.Get(config.EnvAccessKey, "")
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secretKey := env.Get(config.EnvSecretKey, "")
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if accessKey != "" && secretKey != "" {
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cred, err := auth.CreateCredentials(accessKey, secretKey)
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if err != nil {
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logger.Fatal(config.ErrInvalidCredentials(err),
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"Unable to validate credentials inherited from the shell environment")
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}
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globalActiveCred = cred
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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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signal.Notify(globalOSSignalCh, os.Interrupt, syscall.SIGTERM)
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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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// Handle all server command args.
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serverHandleCmdArgs(ctx)
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// Check and load TLS certificates.
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var err error
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globalPublicCerts, globalTLSCerts, globalIsSSL, err = getTLSConfig()
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logger.FatalIf(err, "Unable to load the TLS configuration")
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// Check and load Root CAs.
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globalRootCAs, err = config.GetRootCAs(globalCertsCADir.Get())
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logger.FatalIf(err, "Failed to read root CAs (%v)", err)
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// Handle all server environment vars.
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serverHandleEnvVars()
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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(config.ErrNoCertsAndHTTPSEndpoints(nil), "Unable to start the server")
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}
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if !globalEndpoints.IsHTTPS() && globalIsSSL {
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logger.Fatal(config.ErrCertsAndHTTPEndpoints(nil), "Unable to start the server")
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}
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}
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if !globalCLIContext.Quiet {
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// Check for new updates from dl.min.io.
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checkUpdate(getMinioMode())
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}
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if !globalActiveCred.IsValid() && globalIsDistXL {
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logger.Fatal(config.ErrEnvCredentialsMissingDistributed(nil),
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"Unable to initialize the server in distributed 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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clnts, myNode, err := 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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globalDsync, err = dsync.New(clnts, myNode)
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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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if globalIsXL {
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// Init global heal state
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globalAllHealState = initHealState()
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globalBackgroundHealState = initHealState()
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}
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// Initialize globalConsoleSys system
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globalConsoleSys = NewConsoleLogger(context.Background(), globalEndpoints)
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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(config.ErrUnexpectedError(err), "Unable to configure one of server's RPC services")
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}
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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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go func() {
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globalHTTPServerErrorCh <- globalHTTPServer.Start()
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}()
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newObject, err := newObjectLayer(globalEndpoints)
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logger.SetDeploymentID(globalDeploymentID)
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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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// 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 a new config system.
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globalConfigSys = NewConfigSys()
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// Initialize config system.
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if err = globalConfigSys.Init(newObject); err != nil {
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logger.Fatal(err, "Unable to initialize config system")
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}
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if globalCacheConfig.Enabled {
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logger.StartupMessage(color.Red(color.Bold("Disk caching is recommended only for gateway deployments")))
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// initialize the new disk cache objects.
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globalCacheObjectAPI, err = newServerCacheObjects(context.Background(), globalCacheConfig)
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logger.FatalIf(err, "Unable to initialize disk caching")
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}
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// Create new IAM system.
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globalIAMSys = NewIAMSys()
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if err = globalIAMSys.Init(newObject); err != nil {
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logger.Fatal(err, "Unable to initialize IAM system")
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}
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buckets, err := newObject.ListBuckets(context.Background())
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if err != nil {
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logger.Fatal(err, "Unable to list buckets on your backend")
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}
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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(buckets, newObject); err != nil {
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logger.Fatal(err, "Unable to initialize policy system")
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}
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// Create new lifecycle system.
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globalLifecycleSys = NewLifecycleSys()
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// Initialize lifecycle system.
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if err = globalLifecycleSys.Init(buckets, newObject); err != nil {
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logger.Fatal(err, "Unable to initialize lifecycle 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(buckets, newObject); err != nil {
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logger.Fatal(err, "Unable to initialize notification system")
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}
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// Verify if object layer supports
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// - encryption
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// - compression
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verifyObjectLayerFeatures("server", newObject)
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initDailyLifecycle()
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if globalIsXL {
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initBackgroundHealing()
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initLocalDisksAutoHeal()
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initGlobalHeal()
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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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// Prints the formatted startup message once object layer is initialized.
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printStartupMessage(getAPIEndpoints())
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if globalActiveCred.Equal(auth.DefaultCredentials) {
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msg := fmt.Sprintf("Detected default credentials '%s', please change the credentials immediately using 'MINIO_ACCESS_KEY' and 'MINIO_SECRET_KEY'", globalActiveCred)
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logger.StartupMessage(color.Red(color.Bold(msg)))
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}
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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(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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