1 // Copyright (C) The Arvados Authors. All rights reserved.
3 // SPDX-License-Identifier: AGPL-3.0
16 "git.arvados.org/arvados.git/lib/config"
17 "git.arvados.org/arvados.git/lib/service"
18 "git.arvados.org/arvados.git/sdk/go/arvados"
19 "git.arvados.org/arvados.git/sdk/go/ctxlog"
20 "git.arvados.org/arvados.git/sdk/go/health"
21 "github.com/jmoiron/sqlx"
22 "github.com/prometheus/client_golang/prometheus"
23 "github.com/sirupsen/logrus"
27 os.Exit(runCommand(os.Args[0], os.Args[1:], os.Stdin, os.Stdout, os.Stderr))
30 func runCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
31 logger := ctxlog.FromContext(context.Background())
33 var options RunOptions
34 flags := flag.NewFlagSet(prog, flag.ExitOnError)
35 flags.BoolVar(&options.Once, "once", false,
36 "balance once and then exit")
37 flags.BoolVar(&options.CommitPulls, "commit-pulls", false,
38 "send pull requests (make more replicas of blocks that are underreplicated or are not in optimal rendezvous probe order)")
39 flags.BoolVar(&options.CommitTrash, "commit-trash", false,
40 "send trash requests (delete unreferenced old blocks, and excess replicas of overreplicated blocks)")
41 flags.BoolVar(&options.CommitConfirmedFields, "commit-confirmed-fields", true,
42 "update collection fields (replicas_confirmed, storage_classes_confirmed, etc.)")
43 flags.Bool("version", false, "Write version information to stdout and exit 0")
44 dumpFlag := flags.Bool("dump", false, "dump details for each block to stdout")
45 pprofAddr := flags.String("pprof", "", "serve Go profile data at `[addr]:port`")
49 logrus.Println(http.ListenAndServe(*pprofAddr, nil))
53 loader := config.NewLoader(os.Stdin, logger)
54 loader.SetupFlags(flags)
56 munged := loader.MungeLegacyConfigArgs(logger, args, "-legacy-keepbalance-config")
60 dumper := logrus.New()
61 dumper.Out = os.Stdout
62 dumper.Formatter = &logrus.TextFormatter{}
63 options.Dumper = dumper
66 // Drop our custom args that would be rejected by the generic
69 dropFlag := map[string]bool{
73 "commit-confirmed-fields": true,
76 flags.Visit(func(f *flag.Flag) {
77 if !dropFlag[f.Name] {
78 args = append(args, "-"+f.Name, f.Value.String())
82 return service.Command(arvados.ServiceNameKeepbalance,
83 func(ctx context.Context, cluster *arvados.Cluster, token string, registry *prometheus.Registry) service.Handler {
84 if !options.Once && cluster.Collections.BalancePeriod == arvados.Duration(0) {
85 return service.ErrorHandler(ctx, cluster, fmt.Errorf("cannot start service: Collections.BalancePeriod is zero (if you want to run once and then exit, use the -once flag)"))
88 ac, err := arvados.NewClientFromConfig(cluster)
91 return service.ErrorHandler(ctx, cluster, fmt.Errorf("error initializing client from cluster config: %s", err))
94 db, err := sqlx.Open("postgres", cluster.PostgreSQL.Connection.String())
96 return service.ErrorHandler(ctx, cluster, fmt.Errorf("postgresql connection failed: %s", err))
98 if p := cluster.PostgreSQL.ConnectionPool; p > 0 {
103 return service.ErrorHandler(ctx, cluster, fmt.Errorf("postgresql connection succeeded but ping failed: %s", err))
106 if options.Logger == nil {
107 options.Logger = ctxlog.FromContext(ctx)
114 Metrics: newMetrics(registry),
115 Logger: options.Logger,
116 Dumper: options.Dumper,
119 srv.Handler = &health.Handler{
120 Token: cluster.ManagementToken,
122 Routes: health.Routes{"ping": srv.CheckHealth},
127 }).RunCommand(prog, args, stdin, stdout, stderr)