Exemplo n.º 1
0
func runBootstrapBackup(manifest []byte, backupFile string, ch chan *bootstrap.StepInfo, cfg bootstrap.Config) error {
	defer close(ch)
	f, err := os.Open(backupFile)
	if err != nil {
		return fmt.Errorf("error opening backup file: %s", err)
	}
	defer f.Close()
	tr := tar.NewReader(f)

	getFile := func(name string) (io.Reader, error) {
		rewound := false
		var res io.Reader
		for {
			header, err := tr.Next()
			if err == io.EOF && !rewound {
				if _, err := f.Seek(0, os.SEEK_SET); err != nil {
					return nil, fmt.Errorf("error seeking in backup file: %s", err)
				}
				rewound = true
				tr = tar.NewReader(f)
				continue
			} else if err != nil {
				return nil, fmt.Errorf("error finding %s in backup file: %s", name, err)
			}
			if path.Base(header.Name) != name {
				continue
			}
			if strings.HasSuffix(name, ".gz") {
				res, err = gzip.NewReader(tr)
				if err != nil {
					return nil, fmt.Errorf("error opening %s from backup file: %s", name, err)
				}
			} else {
				res = tr
			}
			break
		}
		return res, nil
	}

	var data struct {
		Discoverd, Flannel, Postgres, MariaDB, MongoDB, Controller *ct.ExpandedFormation
	}

	jsonData, err := getFile("flynn.json")
	if err != nil {
		return err
	}
	if jsonData == nil {
		return fmt.Errorf("did not file flynn.json in backup file")
	}
	if err := json.NewDecoder(jsonData).Decode(&data); err != nil {
		return fmt.Errorf("error decoding backup data: %s", err)
	}

	db, err := getFile("postgres.sql.gz")
	if err != nil {
		return err
	}
	if db == nil {
		return fmt.Errorf("did not find postgres.sql.gz in backup file")
	}

	// add buffer to the end of the SQL import containing commands that rewrite data in the controller db
	sqlBuf := &bytes.Buffer{}
	db = io.MultiReader(db, sqlBuf)
	sqlBuf.WriteString(fmt.Sprintf("\\connect %s\n", data.Controller.Release.Env["PGDATABASE"]))
	sqlBuf.WriteString(`
CREATE FUNCTION pg_temp.json_object_update_key(
  "json"          jsonb,
  "key_to_set"    TEXT,
  "value_to_set"  TEXT
)
  RETURNS jsonb
  LANGUAGE sql
  IMMUTABLE
  STRICT
AS $function$
     SELECT ('{' || string_agg(to_json("key") || ':' || "value", ',') || '}')::jsonb
       FROM (SELECT *
               FROM json_each("json"::json)
              WHERE "key" <> "key_to_set"
              UNION ALL
             SELECT "key_to_set", to_json("value_to_set")) AS "fields"
$function$;
`)

	type manifestStep struct {
		ID       string
		Artifact struct {
			URI string
		}
		Release struct {
			Env       map[string]string
			Processes map[string]ct.ProcessType
		}
	}
	var manifestSteps []*manifestStep
	if err := json.Unmarshal(manifest, &manifestSteps); err != nil {
		return fmt.Errorf("error decoding manifest json: %s", err)
	}

	artifactURIs := make(map[string]string)
	updateProcArgs := func(f *ct.ExpandedFormation, step *manifestStep) {
		for typ, proc := range step.Release.Processes {
			p := f.Release.Processes[typ]
			p.Args = proc.Args
			f.Release.Processes[typ] = p
		}
	}
	for _, step := range manifestSteps {
		switch step.ID {
		case "postgres":
			updateProcArgs(data.Postgres, step)
		case "controller":
			updateProcArgs(data.Controller, step)
		case "mariadb":
			if data.MariaDB != nil {
				updateProcArgs(data.MariaDB, step)
			}
		case "mongodb":
			if data.MongoDB != nil {
				updateProcArgs(data.MongoDB, step)
			}
		}
		if step.Artifact.URI != "" {
			artifactURIs[step.ID] = step.Artifact.URI

			// update current artifact in database for service, taking care to
			// check the database version as migration 15 changed the way
			// artifacts are related to releases in the database
			sqlBuf.WriteString(fmt.Sprintf(`
DO $$
  BEGIN
    IF (SELECT MAX(id) FROM schema_migrations) < 15 THEN
      UPDATE artifacts SET uri = '%[1]s' WHERE artifact_id = (
	SELECT artifact_id FROM releases WHERE release_id = (
	  SELECT release_id FROM apps WHERE name = '%[2]s'
	)
      );
    ELSE
      UPDATE artifacts SET uri = '%[1]s' WHERE type = 'docker' AND artifact_id = (
	SELECT artifact_id FROM release_artifacts WHERE release_id = (
	  SELECT release_id FROM apps WHERE name = '%[2]s'
	)
      );
    END IF;
  END;
$$;`, step.Artifact.URI, step.ID))
		}
	}

	data.Discoverd.ImageArtifact.URI = artifactURIs["discoverd"]
	data.Discoverd.Release.Env["DISCOVERD_PEERS"] = "{{ range $ip := .SortedHostIPs }}{{ $ip }}:1111,{{ end }}"
	data.Postgres.ImageArtifact.URI = artifactURIs["postgres"]
	data.Flannel.ImageArtifact.URI = artifactURIs["flannel"]
	data.Controller.ImageArtifact.URI = artifactURIs["controller"]
	if data.MariaDB != nil {
		data.MariaDB.ImageArtifact.URI = artifactURIs["mariadb"]
		if data.MariaDB.Processes["mariadb"] == 0 {
			// skip mariadb if it wasn't scaled up in the backup
			data.MariaDB = nil
		}
	}
	if data.MongoDB != nil {
		data.MongoDB.ImageArtifact.URI = artifactURIs["mongodb"]
		if data.MongoDB.Processes["mongodb"] == 0 {
			// skip mongodb if it wasn't scaled up in the backup
			data.MongoDB = nil
		}
	}

	// create the slugbuilder artifact if gitreceive still references
	// SLUGBUILDER_IMAGE_URI (in which case there is no slugbuilder
	// artifact in the database)
	sqlBuf.WriteString(fmt.Sprintf(`
DO $$
  BEGIN
    IF (SELECT env->>'SLUGBUILDER_IMAGE_ID' FROM releases WHERE release_id = (SELECT release_id FROM apps WHERE name = 'gitreceive')) IS NULL THEN
      INSERT INTO artifacts (artifact_id, type, uri) VALUES ('%s', 'docker', '%s');
    END IF;
  END;
$$;`, random.UUID(), artifactURIs["slugbuilder-image"]))

	// update the URI of slug artifacts currently being referenced by
	// gitreceive (which will also update all current user releases
	// to use the latest slugrunner)
	for _, name := range []string{"slugbuilder", "slugrunner"} {
		sqlBuf.WriteString(fmt.Sprintf(`
UPDATE artifacts SET uri = '%[1]s'
WHERE artifact_id = (SELECT (env->>'%[2]s_IMAGE_ID')::uuid FROM releases WHERE release_id = (SELECT release_id FROM apps WHERE name = 'gitreceive'))
OR uri = (SELECT env->>'%[2]s_IMAGE_URI' FROM releases WHERE release_id = (SELECT release_id FROM apps WHERE name = 'gitreceive'));`,
			artifactURIs[name+"-image"], strings.ToUpper(name)))
	}

	// update the URI of redis artifacts currently being referenced by
	// the redis app (which will also update all current redis
	// resources to use the latest redis image)
	sqlBuf.WriteString(fmt.Sprintf(`
UPDATE artifacts SET uri = '%s'
WHERE artifact_id = (SELECT (env->>'REDIS_IMAGE_ID')::uuid FROM releases WHERE release_id = (SELECT release_id FROM apps WHERE name = 'redis'))
OR uri = (SELECT env->>'REDIS_IMAGE_URI' FROM releases WHERE release_id = (SELECT release_id FROM apps WHERE name = 'redis'));`,
		artifactURIs["redis-image"]))

	// ensure the image ID environment variables are set for legacy apps
	// which use image URI variables
	for _, name := range []string{"redis", "slugbuilder", "slugrunner"} {
		sqlBuf.WriteString(fmt.Sprintf(`
UPDATE releases SET env = pg_temp.json_object_update_key(env, '%[1]s_IMAGE_ID', (SELECT artifact_id::text FROM artifacts WHERE uri = '%[2]s'))
WHERE env->>'%[1]s_IMAGE_URI' IS NOT NULL;`,
			strings.ToUpper(name), artifactURIs[name+"-image"]))
	}

	step := func(id, name string, action bootstrap.Action) bootstrap.Step {
		if ra, ok := action.(*bootstrap.RunAppAction); ok {
			ra.ID = id
		}
		return bootstrap.Step{
			StepMeta: bootstrap.StepMeta{ID: id, Action: name},
			Action:   action,
		}
	}

	// start discoverd/flannel/postgres/mariadb
	cfg.Singleton = data.Postgres.Release.Env["SINGLETON"] == "true"
	systemSteps := bootstrap.Manifest{
		step("discoverd", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.Discoverd,
		}),
		step("flannel", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.Flannel,
		}),
		step("wait-hosts", "wait-hosts", &bootstrap.WaitHostsAction{}),
		step("postgres", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.Postgres,
		}),
		step("postgres-wait", "wait", &bootstrap.WaitAction{
			URL: "http://postgres-api.discoverd/ping",
		}),
	}

	// Only run up MariaDB if it's in the backup
	if data.MariaDB != nil {
		systemSteps = append(systemSteps, step("mariadb", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.MariaDB,
		}))
		systemSteps = append(systemSteps, step("mariadb-wait", "wait", &bootstrap.WaitAction{
			URL: "http://mariadb-api.discoverd/ping",
		}))
	}

	// Only run up MongoDB if it's in the backup
	if data.MongoDB != nil {
		systemSteps = append(systemSteps, step("mongodb", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.MongoDB,
		}))
		systemSteps = append(systemSteps, step("mongodb-wait", "wait", &bootstrap.WaitAction{
			URL: "http://mongodb-api.discoverd/ping",
		}))
	}

	state, err := systemSteps.Run(ch, cfg)
	if err != nil {
		return err
	}

	// set DISCOVERD_PEERS in release
	sqlBuf.WriteString(fmt.Sprintf(`
UPDATE releases SET env = pg_temp.json_object_update_key(env, 'DISCOVERD_PEERS', '%s')
WHERE release_id = (SELECT release_id FROM apps WHERE name = 'discoverd')
`, state.StepData["discoverd"].(*bootstrap.RunAppState).Release.Env["DISCOVERD_PEERS"]))

	// load data into postgres
	cmd := exec.JobUsingHost(state.Hosts[0], host.Artifact{Type: data.Postgres.ImageArtifact.Type, URI: data.Postgres.ImageArtifact.URI}, nil)
	cmd.Args = []string{"psql"}
	cmd.Env = map[string]string{
		"PGHOST":     "leader.postgres.discoverd",
		"PGUSER":     "******",
		"PGDATABASE": "postgres",
		"PGPASSWORD": data.Postgres.Release.Env["PGPASSWORD"],
	}
	cmd.Stdin = db
	meta := bootstrap.StepMeta{ID: "restore", Action: "restore-postgres"}
	ch <- &bootstrap.StepInfo{StepMeta: meta, State: "start", Timestamp: time.Now().UTC()}
	out, err := cmd.CombinedOutput()
	if os.Getenv("DEBUG") != "" {
		fmt.Println(string(out))
	}
	if err != nil {
		ch <- &bootstrap.StepInfo{
			StepMeta:  meta,
			State:     "error",
			Error:     fmt.Sprintf("error running psql restore: %s - %q", err, string(out)),
			Err:       err,
			Timestamp: time.Now().UTC(),
		}
		return err
	}
	ch <- &bootstrap.StepInfo{StepMeta: meta, State: "done", Timestamp: time.Now().UTC()}

	var mysqldb io.Reader
	if data.MariaDB != nil {
		mysqldb, err = getFile("mysql.sql.gz")
		if err != nil {
			return err
		}
	}

	// load data into mariadb if it was present in the backup.
	if mysqldb != nil && data.MariaDB != nil {
		cmd = exec.JobUsingHost(state.Hosts[0], host.Artifact{Type: data.MariaDB.ImageArtifact.Type, URI: data.MariaDB.ImageArtifact.URI}, nil)
		cmd.Args = []string{"mysql", "-u", "flynn", "-h", "leader.mariadb.discoverd"}
		cmd.Env = map[string]string{
			"MYSQL_PWD": data.MariaDB.Release.Env["MYSQL_PWD"],
		}
		cmd.Stdin = mysqldb
		meta = bootstrap.StepMeta{ID: "restore", Action: "restore-mariadb"}
		ch <- &bootstrap.StepInfo{StepMeta: meta, State: "start", Timestamp: time.Now().UTC()}
		out, err = cmd.CombinedOutput()
		if os.Getenv("DEBUG") != "" {
			fmt.Println(string(out))
		}
		if err != nil {
			ch <- &bootstrap.StepInfo{
				StepMeta:  meta,
				State:     "error",
				Error:     fmt.Sprintf("error running mysql restore: %s - %q", err, string(out)),
				Err:       err,
				Timestamp: time.Now().UTC(),
			}
			return err
		}
		ch <- &bootstrap.StepInfo{StepMeta: meta, State: "done", Timestamp: time.Now().UTC()}
	}

	var mongodb io.Reader
	if data.MongoDB != nil {
		mongodb, err = getFile("mongodb.archive.gz")
		if err != nil {
			return err
		}
	}

	// load data into mongodb if it was present in the backup.
	if mongodb != nil && data.MongoDB != nil {
		cmd = exec.JobUsingHost(state.Hosts[0], host.Artifact{Type: data.MongoDB.ImageArtifact.Type, URI: data.MongoDB.ImageArtifact.URI}, nil)
		cmd.Args = []string{"mongorestore", "-h", "leader.mongodb.discoverd", "-u", "flynn", "-p", data.MongoDB.Release.Env["MONGO_PWD"], "--archive"}
		cmd.Stdin = mongodb
		meta = bootstrap.StepMeta{ID: "restore", Action: "restore-mongodb"}
		ch <- &bootstrap.StepInfo{StepMeta: meta, State: "start", Timestamp: time.Now().UTC()}
		out, err = cmd.CombinedOutput()
		if os.Getenv("DEBUG") != "" {
			fmt.Println(string(out))
		}
		if err != nil {
			ch <- &bootstrap.StepInfo{
				StepMeta:  meta,
				State:     "error",
				Error:     fmt.Sprintf("error running mongodb restore: %s - %q", err, string(out)),
				Err:       err,
				Timestamp: time.Now().UTC(),
			}
			return err
		}
		ch <- &bootstrap.StepInfo{StepMeta: meta, State: "done", Timestamp: time.Now().UTC()}
	}

	// start controller API
	data.Controller.Processes = map[string]int{"web": 1}
	_, err = bootstrap.Manifest{
		step("controller", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.Controller,
		}),
	}.RunWithState(ch, state)

	// wait for controller to come up
	meta = bootstrap.StepMeta{ID: "wait-controller", Action: "wait-controller"}
	ch <- &bootstrap.StepInfo{StepMeta: meta, State: "start", Timestamp: time.Now().UTC()}
	controllerInstances, err := discoverd.GetInstances("controller", 30*time.Second)
	if err != nil {
		return fmt.Errorf("error getting controller instance: %s", err)
	}

	// get blobstore config
	client, err := controller.NewClient("http://"+controllerInstances[0].Addr, data.Controller.Release.Env["AUTH_KEY"])
	if err != nil {
		return err
	}
	blobstoreRelease, err := client.GetAppRelease("blobstore")
	if err != nil {
		return fmt.Errorf("error getting blobstore release: %s", err)
	}
	blobstoreFormation, err := client.GetExpandedFormation("blobstore", blobstoreRelease.ID)
	if err != nil {
		return fmt.Errorf("error getting blobstore expanded formation: %s", err)
	}
	state.SetControllerKey(data.Controller.Release.Env["AUTH_KEY"])
	ch <- &bootstrap.StepInfo{StepMeta: meta, State: "done", Timestamp: time.Now().UTC()}

	// start blobstore, scheduler, and enable cluster monitor
	data.Controller.Processes = map[string]int{"scheduler": 1}
	// only start one scheduler instance
	schedulerProcess := data.Controller.Release.Processes["scheduler"]
	schedulerProcess.Omni = false
	data.Controller.Release.Processes["scheduler"] = schedulerProcess
	_, err = bootstrap.Manifest{
		step("blobstore", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: blobstoreFormation,
		}),
		step("blobstore-wait", "wait", &bootstrap.WaitAction{
			URL:    "http://blobstore.discoverd",
			Status: 200,
		}),
		step("controller-scheduler", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.Controller,
		}),
		step("status", "status-check", &bootstrap.StatusCheckAction{
			URL:     "http://status-web.discoverd",
			Timeout: 600,
		}),
		step("cluster-monitor", "cluster-monitor", &bootstrap.ClusterMonitorAction{
			Enabled: true,
		}),
	}.RunWithState(ch, state)
	if err != nil {
		return err
	}

	return nil
}
Exemplo n.º 2
0
func runBootstrapBackup(manifest []byte, backupFile string, ch chan *bootstrap.StepInfo, cfg bootstrap.Config) error {
	defer close(ch)
	f, err := os.Open(backupFile)
	if err != nil {
		return fmt.Errorf("error opening backup file: %s", err)
	}
	defer f.Close()
	tr := tar.NewReader(f)

	getFile := func(name string) (io.Reader, error) {
		rewound := false
		var res io.Reader
		for {
			header, err := tr.Next()
			if err == io.EOF && !rewound {
				if _, err := f.Seek(0, os.SEEK_SET); err != nil {
					return nil, fmt.Errorf("error seeking in backup file: %s", err)
				}
				rewound = true
				tr = tar.NewReader(f)
				continue
			} else if err != nil {
				return nil, fmt.Errorf("error finding %s in backup file: %s", name, err)
			}
			if path.Base(header.Name) != name {
				continue
			}
			if strings.HasSuffix(name, ".gz") {
				res, err = gzip.NewReader(tr)
				if err != nil {
					return nil, fmt.Errorf("error opening %s from backup file: %s", name, err)
				}
			} else {
				res = tr
			}
			break
		}
		return res, nil
	}

	var data struct {
		Discoverd, Flannel, Postgres, MariaDB, MongoDB, Controller *ct.ExpandedFormation
	}

	jsonData, err := getFile("flynn.json")
	if err != nil {
		return err
	}
	if jsonData == nil {
		return fmt.Errorf("did not file flynn.json in backup file")
	}
	if err := json.NewDecoder(jsonData).Decode(&data); err != nil {
		return fmt.Errorf("error decoding backup data: %s", err)
	}

	db, err := getFile("postgres.sql.gz")
	if err != nil {
		return err
	}
	if db == nil {
		return fmt.Errorf("did not find postgres.sql.gz in backup file")
	}

	// add buffer to the end of the SQL import containing commands that rewrite data in the controller db
	sqlBuf := &bytes.Buffer{}
	db = io.MultiReader(db, sqlBuf)
	sqlBuf.WriteString(fmt.Sprintf("\\connect %s\n", data.Controller.Release.Env["PGDATABASE"]))
	sqlBuf.WriteString(`
CREATE FUNCTION pg_temp.json_object_update_key(
  "json"          jsonb,
  "key_to_set"    TEXT,
  "value_to_set"  TEXT
)
  RETURNS jsonb
  LANGUAGE sql
  IMMUTABLE
  STRICT
AS $function$
     SELECT ('{' || string_agg(to_json("key") || ':' || "value", ',') || '}')::jsonb
       FROM (SELECT *
               FROM json_each("json"::json)
              WHERE "key" <> "key_to_set"
              UNION ALL
             SELECT "key_to_set", to_json("value_to_set")) AS "fields"
$function$;
`)

	type manifestStep struct {
		ID        string
		Artifacts []*ct.Artifact
		Artifact  *ct.Artifact
		Release   struct {
			Env       map[string]string
			Processes map[string]ct.ProcessType
		}
	}
	var manifestSteps []*manifestStep
	if err := json.Unmarshal(manifest, &manifestSteps); err != nil {
		return fmt.Errorf("error decoding manifest json: %s", err)
	}

	manifestStepMap := make(map[string]bootstrap.Step, len(manifestSteps))
	steps, err := bootstrap.UnmarshalManifest(manifest, nil)
	if err != nil {
		return fmt.Errorf("error decoding manifest json: %s", err)
	}
	for _, step := range steps {
		manifestStepMap[step.StepMeta.ID] = step
	}

	artifacts := make(map[string]*ct.Artifact)
	updateProcArgs := func(f *ct.ExpandedFormation, step *manifestStep) {
		for typ, proc := range step.Release.Processes {
			p := f.Release.Processes[typ]
			p.Args = proc.Args
			f.Release.Processes[typ] = p
		}
	}
	updateVolumes := func(f *ct.ExpandedFormation, step *manifestStep) {
		for typ, proc := range step.Release.Processes {
			p := f.Release.Processes[typ]
			p.Volumes = proc.Volumes
			f.Release.Processes[typ] = p
		}
	}
	for _, step := range manifestSteps {
		switch step.ID {
		case "discoverd":
			updateVolumes(data.Discoverd, step)
		case "postgres":
			updateProcArgs(data.Postgres, step)
			updateVolumes(data.Postgres, step)
		case "controller":
			updateProcArgs(data.Controller, step)
		case "mariadb":
			if data.MariaDB != nil {
				updateProcArgs(data.MariaDB, step)
				updateVolumes(data.MariaDB, step)
			}
		case "mongodb":
			if data.MongoDB != nil {
				updateProcArgs(data.MongoDB, step)
				updateVolumes(data.MongoDB, step)
			}
		}
		if step.Artifact != nil {
			artifacts[step.ID] = step.Artifact
		} else if len(step.Artifacts) > 0 {
			artifacts[step.ID] = step.Artifacts[0]
		}
	}

	data.Discoverd.Artifacts = []*ct.Artifact{artifacts["discoverd"]}
	data.Discoverd.Release.Env["DISCOVERD_PEERS"] = "{{ range $ip := .SortedHostIPs }}{{ $ip }}:1111,{{ end }}"
	data.Postgres.Artifacts = []*ct.Artifact{artifacts["postgres"]}
	data.Flannel.Artifacts = []*ct.Artifact{artifacts["flannel"]}
	data.Controller.Artifacts = []*ct.Artifact{artifacts["controller"]}
	if data.MariaDB != nil {
		data.MariaDB.Artifacts = []*ct.Artifact{artifacts["mariadb"]}
	}
	if data.MongoDB != nil {
		data.MongoDB.Artifacts = []*ct.Artifact{artifacts["mongodb"]}
	}

	// set TELEMETRY_CLUSTER_ID
	telemetryClusterID := random.UUID()
	sqlBuf.WriteString(fmt.Sprintf(`
UPDATE releases SET env = jsonb_set(env, '{TELEMETRY_CLUSTER_ID}', '%q')
WHERE release_id = (SELECT release_id FROM apps WHERE name = 'controller');
`, telemetryClusterID))
	data.Controller.Release.Env["TELEMETRY_CLUSTER_ID"] = telemetryClusterID

	// set TELEMETRY_BOOTSTRAP_ID if unset
	if data.Controller.Release.Env["TELEMETRY_BOOTSTRAP_ID"] == "" {
		sqlBuf.WriteString(fmt.Sprintf(`
UPDATE releases SET env = jsonb_set(env, '{TELEMETRY_BOOTSTRAP_ID}', '%q')
WHERE release_id = (SELECT release_id FROM apps WHERE name = 'controller');
`, telemetryClusterID))
		data.Controller.Release.Env["TELEMETRY_BOOTSTRAP_ID"] = telemetryClusterID
	}

	step := func(id, name string, action bootstrap.Action) bootstrap.Step {
		if ra, ok := action.(*bootstrap.RunAppAction); ok {
			ra.ID = id
		}
		return bootstrap.Step{
			StepMeta: bootstrap.StepMeta{ID: id, Action: name},
			Action:   action,
		}
	}

	// ensure flannel has NETWORK set if required
	if network := os.Getenv("FLANNEL_NETWORK"); network != "" {
		data.Flannel.Release.Env["NETWORK"] = network
		sqlBuf.WriteString(fmt.Sprintf(`
UPDATE releases SET env = pg_temp.json_object_update_key(env, 'NETWORK', '%s')
WHERE release_id = (SELECT release_id FROM apps WHERE name = 'flannel');
		`, network))
	}

	// ensure controller / gitreceive have tmp volumes
	sqlBuf.WriteString(`
UPDATE releases SET processes = jsonb_set(processes, '{web,volumes}', '[{"path": "/tmp", "delete_on_stop": true}]')
WHERE release_id IN (SELECT release_id FROM apps WHERE name = 'controller');
UPDATE releases SET processes = jsonb_set(processes, '{app,volumes}', '[{"path": "/tmp", "delete_on_stop": true}]')
WHERE release_id IN (SELECT release_id FROM apps WHERE name = 'gitreceive');
`)

	// update the SINGLETON environment variable for database appliances
	// (which includes updating legacy appliances which had SINGLETON set
	// on the database type rather than the release)
	singleton := strconv.FormatBool(cfg.Singleton)
	data.Postgres.Release.Env["SINGLETON"] = singleton
	sqlBuf.WriteString(fmt.Sprintf(`
UPDATE releases SET env = jsonb_set(env, '{SINGLETON}', '%q')
WHERE release_id IN (SELECT release_id FROM apps WHERE name IN ('postgres', 'mariadb', 'mongodb'));
`, singleton))

	if data.MariaDB != nil {
		data.MariaDB.Release.Env["SINGLETON"] = singleton
		delete(data.MariaDB.Release.Processes["mariadb"].Env, "SINGLETON")
		sqlBuf.WriteString(`
UPDATE releases SET processes = jsonb_set(processes, '{mariadb,env}', (processes #> '{mariadb,env}')::jsonb - 'SINGLETON')
WHERE release_id IN (SELECT release_id FROM apps WHERE name = 'mariadb');
`)
	}

	if data.MongoDB != nil {
		data.MongoDB.Release.Env["SINGLETON"] = singleton
		delete(data.MongoDB.Release.Processes["mongodb"].Env, "SINGLETON")
		sqlBuf.WriteString(`
UPDATE releases SET processes = jsonb_set(processes, '{mongodb,env}', (processes #> '{mongodb,env}')::jsonb - 'SINGLETON')
WHERE release_id IN (SELECT release_id FROM apps WHERE name = 'mongodb');
`)
	}

	// modify app scale based on whether we are booting
	// a singleton or HA cluster
	var scale map[string]map[string]int
	if cfg.Singleton {
		scale = map[string]map[string]int{
			"postgres":       {"postgres": 1, "web": 1},
			"mariadb":        {"web": 1},
			"mongodb":        {"web": 1},
			"controller":     {"web": 1, "worker": 1},
			"redis":          {"web": 1},
			"blobstore":      {"web": 1},
			"gitreceive":     {"app": 1},
			"docker-receive": {"app": 1},
			"logaggregator":  {"app": 1},
			"dashboard":      {"web": 1},
			"status":         {"web": 1},
		}
		data.Postgres.Processes["postgres"] = 1
		data.Postgres.Processes["web"] = 1
		if data.MariaDB != nil {
			data.MariaDB.Processes["mariadb"] = 1
			data.MariaDB.Processes["web"] = 1
		}
		if data.MongoDB != nil {
			data.MongoDB.Processes["mongodb"] = 1
			data.MongoDB.Processes["web"] = 1
		}
	} else {
		scale = map[string]map[string]int{
			"postgres":       {"postgres": 3, "web": 2},
			"mariadb":        {"web": 2},
			"mongodb":        {"web": 2},
			"controller":     {"web": 2, "worker": 2},
			"redis":          {"web": 2},
			"blobstore":      {"web": 2},
			"gitreceive":     {"app": 2},
			"docker-receive": {"app": 2},
			"logaggregator":  {"app": 2},
			"dashboard":      {"web": 2},
			"status":         {"web": 2},
		}
		data.Postgres.Processes["postgres"] = 3
		data.Postgres.Processes["web"] = 2
		if data.MariaDB != nil {
			data.MariaDB.Processes["mariadb"] = 3
			data.MariaDB.Processes["web"] = 2
		}
		if data.MongoDB != nil {
			data.MongoDB.Processes["mongodb"] = 3
			data.MongoDB.Processes["web"] = 2
		}
	}
	for app, procs := range scale {
		for typ, count := range procs {
			sqlBuf.WriteString(fmt.Sprintf(`
UPDATE formations SET processes = jsonb_set(processes, '{%s}', '%d')
WHERE release_id = (SELECT release_id FROM apps WHERE name = '%s');
`, typ, count, app))
		}
	}

	// start discoverd/flannel/postgres
	systemSteps := bootstrap.Manifest{
		step("discoverd", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.Discoverd,
		}),
		step("flannel", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.Flannel,
		}),
		step("wait-hosts", "wait-hosts", &bootstrap.WaitHostsAction{}),
		step("postgres", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.Postgres,
		}),
		step("postgres-wait", "sirenia-wait", &bootstrap.SireniaWaitAction{
			Service: "postgres",
		}),
	}

	state, err := systemSteps.Run(ch, cfg)
	if err != nil {
		return err
	}

	// set DISCOVERD_PEERS in release
	sqlBuf.WriteString(fmt.Sprintf(`
UPDATE releases SET env = pg_temp.json_object_update_key(env, 'DISCOVERD_PEERS', '%s')
WHERE release_id = (SELECT release_id FROM apps WHERE name = 'discoverd');
`, state.StepData["discoverd"].(*bootstrap.RunAppState).Release.Env["DISCOVERD_PEERS"]))

	// make sure STATUS_KEY has the correct value in the dashboard release
	sqlBuf.WriteString(`
UPDATE releases SET env = jsonb_set(env, '{STATUS_KEY}', (
	SELECT env->'AUTH_KEY' FROM releases
	WHERE release_id = (SELECT release_id FROM apps WHERE name = 'status')
))
WHERE release_id = (SELECT release_id FROM apps WHERE name = 'dashboard');
`)

	// load data into postgres
	cmd := exec.JobUsingHost(state.Hosts[0], artifacts["postgres"], nil)
	cmd.Args = []string{"psql"}
	cmd.Env = map[string]string{
		"PGHOST":     "leader.postgres.discoverd",
		"PGUSER":     "******",
		"PGDATABASE": "postgres",
		"PGPASSWORD": data.Postgres.Release.Env["PGPASSWORD"],
	}
	cmd.Stdin = db
	meta := bootstrap.StepMeta{ID: "restore", Action: "restore-postgres"}
	ch <- &bootstrap.StepInfo{StepMeta: meta, State: "start", Timestamp: time.Now().UTC()}
	out, err := cmd.CombinedOutput()
	if os.Getenv("DEBUG") != "" {
		fmt.Println(string(out))
	}
	if err != nil {
		ch <- &bootstrap.StepInfo{
			StepMeta:  meta,
			State:     "error",
			Error:     fmt.Sprintf("error running psql restore: %s - %q", err, string(out)),
			Err:       err,
			Timestamp: time.Now().UTC(),
		}
		return err
	}
	ch <- &bootstrap.StepInfo{StepMeta: meta, State: "done", Timestamp: time.Now().UTC()}

	// start controller API
	data.Controller.Processes = map[string]int{"web": 1}
	_, err = bootstrap.Manifest{
		step("controller", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.Controller,
		}),
	}.RunWithState(ch, state)

	// wait for controller to come up
	meta = bootstrap.StepMeta{ID: "wait-controller", Action: "wait-controller"}
	ch <- &bootstrap.StepInfo{StepMeta: meta, State: "start", Timestamp: time.Now().UTC()}
	controllerInstances, err := discoverd.GetInstances("controller", 30*time.Second)
	if err != nil {
		return fmt.Errorf("error getting controller instance: %s", err)
	}
	controllerKey := data.Controller.Release.Env["AUTH_KEY"]
	client, err := controller.NewClient("http://"+controllerInstances[0].Addr, controllerKey)
	if err != nil {
		return err
	}

	// start mariadb and load data if it was present in the backup.
	mysqldb, err := getFile("mysql.sql.gz")
	if err == nil && data.MariaDB != nil {
		_, err = bootstrap.Manifest{
			step("mariadb", "run-app", &bootstrap.RunAppAction{
				ExpandedFormation: data.MariaDB,
			}),
			step("mariadb-wait", "sirenia-wait", &bootstrap.SireniaWaitAction{
				Service: "mariadb",
			}),
		}.RunWithState(ch, state)
		if err != nil {
			return err
		}

		// ensure the formation is correct in the database
		if err := client.PutFormation(data.MariaDB.Formation()); err != nil {
			return fmt.Errorf("error updating mariadb formation: %s", err)
		}

		cmd = exec.JobUsingHost(state.Hosts[0], artifacts["mariadb"], nil)
		cmd.Args = []string{"mysql", "-u", "flynn", "-h", "leader.mariadb.discoverd"}
		cmd.Env = map[string]string{
			"MYSQL_PWD": data.MariaDB.Release.Env["MYSQL_PWD"],
		}
		cmd.Stdin = mysqldb
		meta = bootstrap.StepMeta{ID: "restore", Action: "restore-mariadb"}
		ch <- &bootstrap.StepInfo{StepMeta: meta, State: "start", Timestamp: time.Now().UTC()}
		out, err = cmd.CombinedOutput()
		if os.Getenv("DEBUG") != "" {
			fmt.Println(string(out))
		}
		if err != nil {
			ch <- &bootstrap.StepInfo{
				StepMeta:  meta,
				State:     "error",
				Error:     fmt.Sprintf("error running mysql restore: %s - %q", err, string(out)),
				Err:       err,
				Timestamp: time.Now().UTC(),
			}
			return err
		}
		ch <- &bootstrap.StepInfo{StepMeta: meta, State: "done", Timestamp: time.Now().UTC()}
	}

	// start mongodb and load data if it was present in the backup.
	mongodb, err := getFile("mongodb.archive.gz")
	if err == nil && data.MongoDB != nil {
		_, err = bootstrap.Manifest{
			step("mongodb", "run-app", &bootstrap.RunAppAction{
				ExpandedFormation: data.MongoDB,
			}),
			step("mongodb-wait", "sirenia-wait", &bootstrap.SireniaWaitAction{
				Service: "mongodb",
			}),
		}.RunWithState(ch, state)
		if err != nil {
			return err
		}

		// ensure the formation is correct in the database
		if err := client.PutFormation(data.MongoDB.Formation()); err != nil {
			return fmt.Errorf("error updating mongodb formation: %s", err)
		}

		cmd = exec.JobUsingHost(state.Hosts[0], artifacts["mongodb"], nil)
		cmd.Args = []string{"mongorestore", "-h", "leader.mongodb.discoverd", "-u", "flynn", "-p", data.MongoDB.Release.Env["MONGO_PWD"], "--archive"}
		cmd.Stdin = mongodb
		meta = bootstrap.StepMeta{ID: "restore", Action: "restore-mongodb"}
		ch <- &bootstrap.StepInfo{StepMeta: meta, State: "start", Timestamp: time.Now().UTC()}
		out, err = cmd.CombinedOutput()
		if os.Getenv("DEBUG") != "" {
			fmt.Println(string(out))
		}
		if err != nil {
			ch <- &bootstrap.StepInfo{
				StepMeta:  meta,
				State:     "error",
				Error:     fmt.Sprintf("error running mongodb restore: %s - %q", err, string(out)),
				Err:       err,
				Timestamp: time.Now().UTC(),
			}
			return err
		}
		ch <- &bootstrap.StepInfo{StepMeta: meta, State: "done", Timestamp: time.Now().UTC()}
	}

	// get blobstore config
	blobstoreRelease, err := client.GetAppRelease("blobstore")
	if err != nil {
		return fmt.Errorf("error getting blobstore release: %s", err)
	}
	blobstoreFormation, err := client.GetExpandedFormation("blobstore", blobstoreRelease.ID)
	if err != nil {
		return fmt.Errorf("error getting blobstore expanded formation: %s", err)
	}
	state.SetControllerKey(controllerKey)
	ch <- &bootstrap.StepInfo{StepMeta: meta, State: "done", Timestamp: time.Now().UTC()}

	// start the blobstore
	blobstoreFormation.Artifacts = []*ct.Artifact{artifacts["blobstore"]}
	_, err = bootstrap.Manifest{
		step("blobstore", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: blobstoreFormation,
		}),
		step("blobstore-wait", "wait", &bootstrap.WaitAction{
			URL:    "http://blobstore.discoverd",
			Status: 200,
		}),
	}.RunWithState(ch, state)
	if err != nil {
		return err
	}

	// now that the controller and blobstore are up and controller
	// migrations have run (so we know artifacts have a manifest column),
	// migrate all artifacts to Flynn images
	jsonb := func(v interface{}) []byte {
		data, _ := json.Marshal(v)
		return data
	}
	sqlBuf.Reset()
	for _, step := range manifestSteps {
		artifact, ok := artifacts[step.ID]
		if !ok {
			continue
		}

		// update current artifact in database for service
		sqlBuf.WriteString(fmt.Sprintf(`
UPDATE artifacts SET uri = '%s', type = 'flynn', manifest = '%s', hashes = '%s', size = %d, layer_url_template = '%s', meta = '%s' WHERE artifact_id = (
  SELECT artifact_id FROM release_artifacts WHERE release_id = (
    SELECT release_id FROM apps WHERE name = '%s'
  )
);`, artifact.URI, jsonb(&artifact.RawManifest), jsonb(artifact.Hashes), artifact.Size, artifact.LayerURLTemplate, jsonb(artifact.Meta), step.ID))
	}

	// create the slugbuilder artifact if gitreceive still references it by
	// URI (in which case there is no slugbuilder artifact in the database)
	slugBuilder := artifacts["slugbuilder-image"]
	sqlBuf.WriteString(fmt.Sprintf(`
DO $$
  BEGIN
    IF (SELECT env->>'SLUGBUILDER_IMAGE_ID' FROM releases WHERE release_id = (SELECT release_id FROM apps WHERE name = 'gitreceive')) IS NULL THEN
      INSERT INTO artifacts (artifact_id, type, uri, manifest, hashes, size, layer_url_template, meta) VALUES ('%s', 'flynn', '%s', '%s', '%s', %d, '%s', '%s');
    END IF;
  END;
$$;`, random.UUID(), slugBuilder.URI, jsonb(&slugBuilder.RawManifest), jsonb(slugBuilder.Hashes), slugBuilder.Size, slugBuilder.LayerURLTemplate, jsonb(slugBuilder.Meta)))

	// create the slugrunner artifact if it doesn't exist (which can be the
	// case if no apps were deployed with git push in older clusters where
	// it was created lazily)
	slugRunner := artifacts["slugrunner-image"]
	sqlBuf.WriteString(fmt.Sprintf(`
DO $$
  BEGIN
    IF (SELECT env->>'SLUGRUNNER_IMAGE_ID' FROM releases WHERE release_id = (SELECT release_id FROM apps WHERE name = 'gitreceive')) IS NULL THEN
      IF NOT EXISTS (SELECT 1 FROM artifacts WHERE uri = (SELECT env->>'SLUGRUNNER_IMAGE_URI' FROM releases WHERE release_id = (SELECT release_id FROM apps WHERE name = 'gitreceive'))) THEN
        INSERT INTO artifacts (artifact_id, type, uri, manifest, hashes, size, layer_url_template, meta) VALUES ('%s', 'flynn', '%s', '%s', '%s', %d, '%s', '%s');
      END IF;
    END IF;
  END;
$$;`, random.UUID(), slugRunner.URI, jsonb(&slugRunner.RawManifest), jsonb(slugRunner.Hashes), slugRunner.Size, slugRunner.LayerURLTemplate, jsonb(slugRunner.Meta)))

	// update slug artifacts currently being referenced by gitreceive
	// (which will also update all current user releases to use the
	// latest slugrunner)
	for _, name := range []string{"slugbuilder", "slugrunner"} {
		artifact := artifacts[name+"-image"]
		sqlBuf.WriteString(fmt.Sprintf(`
UPDATE artifacts SET uri = '%[1]s', type = 'flynn', manifest = '%[2]s', hashes = '%[3]s', size = %[4]d, layer_url_template = '%[5]s', meta = '%[6]s'
WHERE artifact_id = (SELECT (env->>'%[7]s_IMAGE_ID')::uuid FROM releases WHERE release_id = (SELECT release_id FROM apps WHERE name = 'gitreceive'))
OR uri = (SELECT env->>'%[7]s_IMAGE_URI' FROM releases WHERE release_id = (SELECT release_id FROM apps WHERE name = 'gitreceive'));`,
			artifact.URI, jsonb(&artifact.RawManifest), jsonb(artifact.Hashes), artifact.Size, artifact.LayerURLTemplate, jsonb(artifact.Meta), strings.ToUpper(name)))
	}

	// update the URI of redis artifacts currently being referenced by
	// the redis app (which will also update all current redis resources
	// to use the latest redis image)
	redisImage := artifacts["redis-image"]
	sqlBuf.WriteString(fmt.Sprintf(`
UPDATE artifacts SET uri = '%s', type = 'flynn', manifest = '%s', hashes = '%s', size = %d, layer_url_template = '%s', meta = '%s'
WHERE artifact_id = (SELECT (env->>'REDIS_IMAGE_ID')::uuid FROM releases WHERE release_id = (SELECT release_id FROM apps WHERE name = 'redis'))
OR uri = (SELECT env->>'REDIS_IMAGE_URI' FROM releases WHERE release_id = (SELECT release_id FROM apps WHERE name = 'redis'));`,
		redisImage.URI, jsonb(&redisImage.RawManifest), jsonb(redisImage.Hashes), redisImage.Size, redisImage.LayerURLTemplate, jsonb(redisImage.Meta)))

	// ensure the image ID environment variables are set for legacy apps
	// which use image URI variables
	for _, name := range []string{"redis", "slugbuilder", "slugrunner"} {
		sqlBuf.WriteString(fmt.Sprintf(`
UPDATE releases SET env = jsonb_set(env, '{%[1]s_IMAGE_ID}', ('"' || (SELECT artifact_id::text FROM artifacts WHERE uri = '%[2]s') || '"')::jsonb, true)
WHERE env->>'%[1]s_IMAGE_URI' IS NOT NULL;`,
			strings.ToUpper(name), artifacts[name+"-image"].URI))
	}

	// run the above artifact migration SQL against the controller database
	cmd = exec.JobUsingHost(state.Hosts[0], artifacts["postgres"], nil)
	cmd.Args = []string{"psql", "--echo-queries"}
	cmd.Env = map[string]string{
		"PGHOST":     "leader.postgres.discoverd",
		"PGUSER":     data.Controller.Release.Env["PGUSER"],
		"PGDATABASE": data.Controller.Release.Env["PGDATABASE"],
		"PGPASSWORD": data.Controller.Release.Env["PGPASSWORD"],
	}
	cmd.Stdin = sqlBuf
	meta = bootstrap.StepMeta{ID: "migrate-artifacts", Action: "migrate-artifacts"}
	ch <- &bootstrap.StepInfo{StepMeta: meta, State: "start", Timestamp: time.Now().UTC()}
	out, err = cmd.CombinedOutput()
	if os.Getenv("DEBUG") != "" {
		fmt.Println(string(out))
	}
	if err != nil {
		ch <- &bootstrap.StepInfo{
			StepMeta:  meta,
			State:     "error",
			Error:     fmt.Sprintf("error migrating artifacts: %s - %q", err, string(out)),
			Err:       err,
			Timestamp: time.Now().UTC(),
		}
		return err
	}

	// determine if there are any slugs or docker images which need to be
	// converted to Flynn images
	migrateSlugs := false
	migrateDocker := false
	artifactList, err := client.ArtifactList()
	if err != nil {
		return fmt.Errorf("error listing artifacts: %s", err)
	}
	for _, artifact := range artifactList {
		if artifact.Type == ct.DeprecatedArtifactTypeFile {
			migrateSlugs = true
		}
		if artifact.Type == ct.DeprecatedArtifactTypeDocker && artifact.Meta["docker-receive.repository"] != "" {
			migrateDocker = true
		}
		if migrateSlugs && migrateDocker {
			break
		}
	}

	runMigrator := func(cmd *exec.Cmd) error {
		out, err := cmd.StdoutPipe()
		if err != nil {
			return err
		}
		done := make(chan struct{})
		go func() {
			defer close(done)
			s := bufio.NewScanner(out)
			for s.Scan() {
				ch <- &bootstrap.StepInfo{
					StepMeta:  meta,
					State:     "info",
					StepData:  s.Text(),
					Timestamp: time.Now().UTC(),
				}
			}
		}()
		err = cmd.Run()
		select {
		case <-done:
		case <-time.After(time.Second):
		}
		return err
	}

	if migrateSlugs {
		cmd = exec.JobUsingHost(state.Hosts[0], artifacts["slugbuilder-image"], nil)
		cmd.Args = []string{"/bin/slug-migrator"}
		cmd.Env = map[string]string{
			"CONTROLLER_KEY": data.Controller.Release.Env["AUTH_KEY"],
			"FLYNN_POSTGRES": data.Controller.Release.Env["FLYNN_POSTGRES"],
			"PGHOST":         "leader.postgres.discoverd",
			"PGUSER":         data.Controller.Release.Env["PGUSER"],
			"PGDATABASE":     data.Controller.Release.Env["PGDATABASE"],
			"PGPASSWORD":     data.Controller.Release.Env["PGPASSWORD"],
		}
		if err := runMigrator(cmd); err != nil {
			ch <- &bootstrap.StepInfo{
				StepMeta:  meta,
				State:     "error",
				Error:     fmt.Sprintf("error migrating slugs: %s", err),
				Err:       err,
				Timestamp: time.Now().UTC(),
			}
			return err
		}
	}

	if migrateDocker {
		// start docker-receive
		dockerRelease, err := client.GetAppRelease("docker-receive")
		if err != nil {
			return fmt.Errorf("error getting docker-receive release: %s", err)
		}
		dockerFormation, err := client.GetExpandedFormation("docker-receive", dockerRelease.ID)
		if err != nil {
			return fmt.Errorf("error getting docker-receive expanded formation: %s", err)
		}
		dockerFormation.Artifacts = []*ct.Artifact{artifacts["docker-receive"]}
		_, err = bootstrap.Manifest{
			step("docker-receive", "run-app", &bootstrap.RunAppAction{
				ExpandedFormation: dockerFormation,
			}),
			step("docker-receive-wait", "wait", &bootstrap.WaitAction{
				URL:    "http://docker-receive.discoverd/v2/",
				Status: 401,
			}),
		}.RunWithState(ch, state)
		if err != nil {
			return err
		}

		// run the docker image migrator
		cmd = exec.JobUsingHost(state.Hosts[0], artifacts["docker-receive"], nil)
		cmd.Args = []string{"/bin/docker-migrator"}
		cmd.Env = map[string]string{
			"CONTROLLER_KEY": data.Controller.Release.Env["AUTH_KEY"],
			"FLYNN_POSTGRES": data.Controller.Release.Env["FLYNN_POSTGRES"],
			"PGHOST":         "leader.postgres.discoverd",
			"PGUSER":         data.Controller.Release.Env["PGUSER"],
			"PGDATABASE":     data.Controller.Release.Env["PGDATABASE"],
			"PGPASSWORD":     data.Controller.Release.Env["PGPASSWORD"],
		}
		cmd.Volumes = []*ct.VolumeReq{{Path: "/tmp", DeleteOnStop: true}}
		if err := runMigrator(cmd); err != nil {
			ch <- &bootstrap.StepInfo{
				StepMeta:  meta,
				State:     "error",
				Error:     fmt.Sprintf("error migrating Docker images: %s", err),
				Err:       err,
				Timestamp: time.Now().UTC(),
			}
			return err
		}
	}
	ch <- &bootstrap.StepInfo{StepMeta: meta, State: "done", Timestamp: time.Now().UTC()}

	// start scheduler and enable cluster monitor
	data.Controller.Processes = map[string]int{"scheduler": 1}
	// only start one scheduler instance
	schedulerProcess := data.Controller.Release.Processes["scheduler"]
	schedulerProcess.Omni = false
	data.Controller.Release.Processes["scheduler"] = schedulerProcess
	_, err = bootstrap.Manifest{
		step("controller-scheduler", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.Controller,
		}),
		step("status", "status-check", &bootstrap.StatusCheckAction{
			URL:     "http://status-web.discoverd",
			Timeout: 600,
		}),
		step("cluster-monitor", "cluster-monitor", &bootstrap.ClusterMonitorAction{
			Enabled: true,
		}),
	}.RunWithState(ch, state)
	if err != nil {
		return err
	}

	// mariadb and mongodb steps require the controller key
	state.StepData["controller-key"] = &bootstrap.RandomData{controllerKey}

	// deploy mariadb if it wasn't restored from the backup
	if data.MariaDB == nil {
		steps := bootstrap.Manifest{
			manifestStepMap["mariadb-password"],
			manifestStepMap["mariadb"],
			manifestStepMap["add-mysql-provider"],
			manifestStepMap["mariadb-wait"],
		}
		if _, err := steps.RunWithState(ch, state); err != nil {
			return fmt.Errorf("error deploying mariadb: %s", err)
		}
	}

	// deploy mongodb if it wasn't restored from the backup
	if data.MongoDB == nil {
		steps := bootstrap.Manifest{
			manifestStepMap["mongodb-password"],
			manifestStepMap["mongodb"],
			manifestStepMap["add-mongodb-provider"],
			manifestStepMap["mongodb-wait"],
		}
		if _, err := steps.RunWithState(ch, state); err != nil {
			return fmt.Errorf("error deploying mongodb: %s", err)
		}
	}

	// deploy docker-receive if it wasn't in the backup
	if _, err := client.GetApp("docker-receive"); err == controller.ErrNotFound {
		routes, err := client.RouteList("controller")
		if len(routes) == 0 {
			err = errors.New("no routes found")
		}
		if err != nil {
			return fmt.Errorf("error listing controller routes: %s", err)
		}
		for _, r := range routes {
			if r.Domain == fmt.Sprintf("controller.%s", data.Controller.Release.Env["DEFAULT_ROUTE_DOMAIN"]) {
				state.StepData["controller-cert"] = &tlscert.Cert{
					Cert:       r.Certificate.Cert,
					PrivateKey: r.Certificate.Key,
				}
				break
			}
		}
		steps := bootstrap.Manifest{
			manifestStepMap["docker-receive-secret"],
			manifestStepMap["docker-receive"],
			manifestStepMap["docker-receive-route"],
			manifestStepMap["docker-receive-wait"],
		}
		if _, err := steps.RunWithState(ch, state); err != nil {
			return fmt.Errorf("error deploying docker-receive: %s", err)
		}
	}

	return nil
}
Exemplo n.º 3
0
func runBootstrapBackup(manifest []byte, backupFile string, ch chan *bootstrap.StepInfo, cfg bootstrap.Config) error {
	defer close(ch)
	f, err := os.Open(backupFile)
	if err != nil {
		return fmt.Errorf("error opening backup file: %s", err)
	}
	defer f.Close()
	tr := tar.NewReader(f)

	getFile := func(name string) (io.Reader, error) {
		rewound := false
		var res io.Reader
		for {
			header, err := tr.Next()
			if err == io.EOF && !rewound {
				if _, err := f.Seek(0, os.SEEK_SET); err != nil {
					return nil, fmt.Errorf("error seeking in backup file: %s", err)
				}
				rewound = true
				tr = tar.NewReader(f)
				continue
			} else if err != nil {
				return nil, fmt.Errorf("error finding %s in backup file: %s", name, err)
			}
			if path.Base(header.Name) != name {
				continue
			}
			if strings.HasSuffix(name, ".gz") {
				res, err = gzip.NewReader(tr)
				if err != nil {
					return nil, fmt.Errorf("error opening %s from backup file: %s", name, err)
				}
			} else {
				res = tr
			}
			break
		}
		return res, nil
	}

	var data struct {
		Discoverd, Flannel, Postgres, MariaDB, Controller *ct.ExpandedFormation
	}

	jsonData, err := getFile("flynn.json")
	if err != nil {
		return err
	}
	if jsonData == nil {
		return fmt.Errorf("did not file flynn.json in backup file")
	}
	if err := json.NewDecoder(jsonData).Decode(&data); err != nil {
		return fmt.Errorf("error decoding backup data: %s", err)
	}

	db, err := getFile("postgres.sql.gz")
	if err != nil {
		return err
	}
	if db == nil {
		return fmt.Errorf("did not find postgres.sql.gz in backup file")
	}

	// add buffer to the end of the SQL import containing commands that rewrite data in the controller db
	sqlBuf := &bytes.Buffer{}
	db = io.MultiReader(db, sqlBuf)
	sqlBuf.WriteString(fmt.Sprintf("\\connect %s\n", data.Controller.Release.Env["PGDATABASE"]))
	sqlBuf.WriteString(`
CREATE FUNCTION pg_temp.json_object_update_key(
  "json"          jsonb,
  "key_to_set"    TEXT,
  "value_to_set"  TEXT
)
  RETURNS jsonb
  LANGUAGE sql
  IMMUTABLE
  STRICT
AS $function$
     SELECT ('{' || string_agg(to_json("key") || ':' || "value", ',') || '}')::jsonb
       FROM (SELECT *
               FROM json_each("json"::json)
              WHERE "key" <> "key_to_set"
              UNION ALL
             SELECT "key_to_set", to_json("value_to_set")) AS "fields"
$function$;
`)

	var manifestSteps []struct {
		ID       string
		Artifact struct {
			URI string
		}
		Release struct {
			Env map[string]string
		}
	}
	if err := json.Unmarshal(manifest, &manifestSteps); err != nil {
		return fmt.Errorf("error decoding manifest json: %s", err)
	}
	artifactURIs := make(map[string]string)
	for _, step := range manifestSteps {
		if step.Artifact.URI != "" {
			artifactURIs[step.ID] = step.Artifact.URI
			if step.ID == "gitreceive" {
				artifactURIs["slugbuilder"] = step.Release.Env["SLUGBUILDER_IMAGE_URI"]
				artifactURIs["slugrunner"] = step.Release.Env["SLUGRUNNER_IMAGE_URI"]
			}
			// update current artifact in database for service
			sqlBuf.WriteString(fmt.Sprintf(`
UPDATE artifacts SET uri = '%s'
WHERE artifact_id = (SELECT artifact_id FROM releases
                     WHERE release_id = (SELECT release_id FROM apps
                     WHERE name = '%s'));`, step.Artifact.URI, step.ID))
		}
	}

	data.Discoverd.Artifact.URI = artifactURIs["discoverd"]
	data.Discoverd.Release.Env["DISCOVERD_PEERS"] = "{{ range $ip := .SortedHostIPs }}{{ $ip }}:1111,{{ end }}"
	data.Postgres.Artifact.URI = artifactURIs["postgres"]
	data.Flannel.Artifact.URI = artifactURIs["flannel"]
	data.Controller.Artifact.URI = artifactURIs["controller"]
	if data.MariaDB != nil {
		data.MariaDB.Artifact.URI = artifactURIs["mariadb"]
		if data.MariaDB.Processes["mariadb"] == 0 {
			// skip mariadb if it wasn't scaled up in the backup
			data.MariaDB = nil
		}
	}

	sqlBuf.WriteString(fmt.Sprintf(`
UPDATE artifacts SET uri = '%s'
WHERE uri = (SELECT env->>'SLUGRUNNER_IMAGE_URI' FROM releases WHERE release_id = (SELECT release_id FROM apps WHERE name = 'gitreceive'));`,
		artifactURIs["slugrunner"]))

	for _, app := range []string{"gitreceive", "taffy"} {
		for _, env := range []string{"slugbuilder", "slugrunner"} {
			sqlBuf.WriteString(fmt.Sprintf(`
UPDATE releases SET env = pg_temp.json_object_update_key(env, '%s_IMAGE_URI', '%s')
WHERE release_id = (SELECT release_id from apps WHERE name = '%s');`,
				strings.ToUpper(env), artifactURIs[env], app))
		}
	}

	step := func(id, name string, action bootstrap.Action) bootstrap.Step {
		if ra, ok := action.(*bootstrap.RunAppAction); ok {
			ra.ID = id
		}
		return bootstrap.Step{
			StepMeta: bootstrap.StepMeta{ID: id, Action: name},
			Action:   action,
		}
	}

	// start discoverd/flannel/postgres/mariadb
	cfg.Singleton = data.Postgres.Release.Env["SINGLETON"] == "true"
	systemSteps := bootstrap.Manifest{
		step("discoverd", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.Discoverd,
		}),
		step("flannel", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.Flannel,
		}),
		step("wait-hosts", "wait-hosts", &bootstrap.WaitHostsAction{}),
		step("postgres", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.Postgres,
		}),
		step("postgres-wait", "wait", &bootstrap.WaitAction{
			URL: "http://postgres-api.discoverd/ping",
		}),
	}

	// Only run up MariaDB if it's in the backup
	if data.MariaDB != nil {
		systemSteps = append(systemSteps, step("mariadb", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.MariaDB,
		}))
		systemSteps = append(systemSteps, step("mariadb-wait", "wait", &bootstrap.WaitAction{
			URL: "http://mariadb-api.discoverd/ping",
		}))
	}
	state, err := systemSteps.Run(ch, cfg)
	if err != nil {
		return err
	}

	// set DISCOVERD_PEERS in release
	sqlBuf.WriteString(fmt.Sprintf(`
UPDATE releases SET env = pg_temp.json_object_update_key(env, 'DISCOVERD_PEERS', '%s')
WHERE release_id = (SELECT release_id FROM apps WHERE name = 'discoverd')
`, state.StepData["discoverd"].(*bootstrap.RunAppState).Release.Env["DISCOVERD_PEERS"]))

	// load data into postgres
	cmd := exec.JobUsingHost(state.Hosts[0], host.Artifact{Type: data.Postgres.Artifact.Type, URI: data.Postgres.Artifact.URI}, nil)
	cmd.Entrypoint = []string{"psql"}
	cmd.Env = map[string]string{
		"PGHOST":     "leader.postgres.discoverd",
		"PGUSER":     "******",
		"PGDATABASE": "postgres",
		"PGPASSWORD": data.Postgres.Release.Env["PGPASSWORD"],
	}
	cmd.Stdin = db
	meta := bootstrap.StepMeta{ID: "restore", Action: "restore-postgres"}
	ch <- &bootstrap.StepInfo{StepMeta: meta, State: "start", Timestamp: time.Now().UTC()}
	out, err := cmd.CombinedOutput()
	if os.Getenv("DEBUG") != "" {
		fmt.Println(string(out))
	}
	if err != nil {
		ch <- &bootstrap.StepInfo{
			StepMeta:  meta,
			State:     "error",
			Error:     fmt.Sprintf("error running psql restore: %s - %q", err, string(out)),
			Err:       err,
			Timestamp: time.Now().UTC(),
		}
		return err
	}
	ch <- &bootstrap.StepInfo{StepMeta: meta, State: "done", Timestamp: time.Now().UTC()}

	var mysqldb io.Reader
	if data.MariaDB != nil {
		mysqldb, err = getFile("mysql.sql.gz")
		if err != nil {
			return err
		}
	}

	// load data into mariadb if it was present in the backup.
	if mysqldb != nil && data.MariaDB != nil {
		cmd = exec.JobUsingHost(state.Hosts[0], host.Artifact{Type: data.MariaDB.Artifact.Type, URI: data.MariaDB.Artifact.URI}, nil)
		cmd.Entrypoint = []string{"mysql"}
		cmd.Cmd = []string{"-u", "flynn", "-h", "leader.mariadb.discoverd"}
		cmd.Env = map[string]string{
			"MYSQL_PWD": data.MariaDB.Release.Env["MYSQL_PWD"],
		}
		cmd.Stdin = mysqldb
		meta = bootstrap.StepMeta{ID: "restore", Action: "restore-mariadb"}
		ch <- &bootstrap.StepInfo{StepMeta: meta, State: "start", Timestamp: time.Now().UTC()}
		out, err = cmd.CombinedOutput()
		if os.Getenv("DEBUG") != "" {
			fmt.Println(string(out))
		}
		if err != nil {
			ch <- &bootstrap.StepInfo{
				StepMeta:  meta,
				State:     "error",
				Error:     fmt.Sprintf("error running mysql restore: %s - %q", err, string(out)),
				Err:       err,
				Timestamp: time.Now().UTC(),
			}
			return err
		}
		ch <- &bootstrap.StepInfo{StepMeta: meta, State: "done", Timestamp: time.Now().UTC()}
	}

	// start controller API
	data.Controller.Processes = map[string]int{"web": 1}
	_, err = bootstrap.Manifest{
		step("controller", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.Controller,
		}),
	}.RunWithState(ch, state)

	// wait for controller to come up
	meta = bootstrap.StepMeta{ID: "wait-controller", Action: "wait-controller"}
	ch <- &bootstrap.StepInfo{StepMeta: meta, State: "start", Timestamp: time.Now().UTC()}
	controllerInstances, err := discoverd.GetInstances("controller", 30*time.Second)
	if err != nil {
		return fmt.Errorf("error getting controller instance: %s", err)
	}

	// get blobstore config
	client, err := controller.NewClient("http://"+controllerInstances[0].Addr, data.Controller.Release.Env["AUTH_KEY"])
	if err != nil {
		return err
	}
	blobstoreRelease, err := client.GetAppRelease("blobstore")
	if err != nil {
		return fmt.Errorf("error getting blobstore release: %s", err)
	}
	blobstoreFormation, err := client.GetExpandedFormation("blobstore", blobstoreRelease.ID)
	if err != nil {
		return fmt.Errorf("error getting blobstore expanded formation: %s", err)
	}
	state.SetControllerKey(data.Controller.Release.Env["AUTH_KEY"])
	ch <- &bootstrap.StepInfo{StepMeta: meta, State: "done", Timestamp: time.Now().UTC()}

	// start blobstore, scheduler, and enable cluster monitor
	data.Controller.Processes = map[string]int{"scheduler": 1}
	// only start one scheduler instance
	schedulerProcess := data.Controller.Release.Processes["scheduler"]
	schedulerProcess.Omni = false
	data.Controller.Release.Processes["scheduler"] = schedulerProcess
	_, err = bootstrap.Manifest{
		step("blobstore", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: blobstoreFormation,
		}),
		step("blobstore-wait", "wait", &bootstrap.WaitAction{
			URL:    "http://blobstore.discoverd",
			Status: 404,
		}),
		step("controller-scheduler", "run-app", &bootstrap.RunAppAction{
			ExpandedFormation: data.Controller,
		}),
		step("status", "status-check", &bootstrap.StatusCheckAction{
			URL: "http://status-web.discoverd",
		}),
		step("cluster-monitor", "cluster-monitor", &bootstrap.ClusterMonitorAction{
			Enabled: true,
		}),
	}.RunWithState(ch, state)
	if err != nil {
		return err
	}

	return nil
}