Example #1
0
// handleBootstrapError is called to clean up if bootstrap fails.
func handleBootstrapError(ctx *cmd.Context, err error, cleanup func()) {
	ch := make(chan os.Signal, 1)
	ctx.InterruptNotify(ch)
	defer ctx.StopInterruptNotify(ch)
	defer close(ch)
	go func() {
		for _ = range ch {
			fmt.Fprintln(ctx.GetStderr(), "Cleaning up failed bootstrap")
		}
	}()
	cleanup()
}
Example #2
0
// handleBootstrapError is called to clean up if bootstrap fails.
func handleBootstrapError(ctx *cmd.Context, err error, cleanup func() error) {
	ch := make(chan os.Signal, 1)
	ctx.InterruptNotify(ch)
	defer ctx.StopInterruptNotify(ch)
	defer close(ch)
	go func() {
		for _ = range ch {
			fmt.Fprintln(ctx.GetStderr(), "Cleaning up failed bootstrap")
		}
	}()
	if err := cleanup(); err != nil {
		logger.Errorf("error cleaning up: %v", err)
	}
}
Example #3
0
// Run connects to the environment specified on the command line and bootstraps
// a juju in that environment if none already exists. If there is as yet no environments.yaml file,
// the user is informed how to create one.
func (c *bootstrapCommand) Run(ctx *cmd.Context) (resultErr error) {
	if err := c.parseConstraints(ctx); err != nil {
		return err
	}
	if c.BootstrapImage != "" {
		if c.BootstrapSeries == "" {
			return errors.Errorf("--bootstrap-image must be used with --bootstrap-series")
		}
		cons, err := constraints.Merge(c.Constraints, c.BootstrapConstraints)
		if err != nil {
			return errors.Trace(err)
		}
		if !cons.HasArch() {
			return errors.Errorf("--bootstrap-image must be used with --bootstrap-constraints, specifying architecture")
		}
	}
	if c.interactive {
		if err := c.runInteractive(ctx); err != nil {
			return errors.Trace(err)
		}
		// now run normal bootstrap using info gained above.
	}
	if c.showClouds {
		return printClouds(ctx, c.ClientStore())
	}
	if c.showRegionsForCloud != "" {
		return printCloudRegions(ctx, c.showRegionsForCloud)
	}

	bootstrapFuncs := getBootstrapFuncs()

	// Get the cloud definition identified by c.Cloud. If c.Cloud does not
	// identify a cloud in clouds.yaml, but is the name of a provider, and
	// that provider implements environs.CloudRegionDetector, we'll
	// synthesise a Cloud structure with the detected regions and no auth-
	// types.
	cloud, err := jujucloud.CloudByName(c.Cloud)
	if errors.IsNotFound(err) {
		ctx.Verbosef("cloud %q not found, trying as a provider name", c.Cloud)
		provider, err := environs.Provider(c.Cloud)
		if errors.IsNotFound(err) {
			return errors.NewNotFound(nil, fmt.Sprintf("unknown cloud %q, please try %q", c.Cloud, "juju update-clouds"))
		} else if err != nil {
			return errors.Trace(err)
		}
		detector, ok := bootstrapFuncs.CloudRegionDetector(provider)
		if !ok {
			ctx.Verbosef(
				"provider %q does not support detecting regions",
				c.Cloud,
			)
			return errors.NewNotFound(nil, fmt.Sprintf("unknown cloud %q, please try %q", c.Cloud, "juju update-clouds"))
		}
		var cloudEndpoint string
		regions, err := detector.DetectRegions()
		if errors.IsNotFound(err) {
			// It's not an error to have no regions. If the
			// provider does not support regions, then we
			// reinterpret the supplied region name as the
			// cloud's endpoint. This enables the user to
			// supply, for example, maas/<IP> or manual/<IP>.
			if c.Region != "" {
				ctx.Verbosef("interpreting %q as the cloud endpoint", c.Region)
				cloudEndpoint = c.Region
				c.Region = ""
			}
		} else if err != nil {
			return errors.Annotatef(err,
				"detecting regions for %q cloud provider",
				c.Cloud,
			)
		}
		schemas := provider.CredentialSchemas()
		authTypes := make([]jujucloud.AuthType, 0, len(schemas))
		for authType := range schemas {
			authTypes = append(authTypes, authType)
		}
		// Since we are iterating over a map, lets sort the authTypes so
		// they are always in a consistent order.
		sort.Sort(jujucloud.AuthTypes(authTypes))
		cloud = &jujucloud.Cloud{
			Type:      c.Cloud,
			AuthTypes: authTypes,
			Endpoint:  cloudEndpoint,
			Regions:   regions,
		}
	} else if err != nil {
		return errors.Trace(err)
	}
	if err := checkProviderType(cloud.Type); errors.IsNotFound(err) {
		// This error will get handled later.
	} else if err != nil {
		return errors.Trace(err)
	}

	provider, err := environs.Provider(cloud.Type)
	if err != nil {
		return errors.Trace(err)
	}
	// Custom clouds may not have explicitly declared support for any auth-
	// types, in which case we'll assume that they support everything that
	// the provider supports.
	if len(cloud.AuthTypes) == 0 {
		for authType := range provider.CredentialSchemas() {
			cloud.AuthTypes = append(cloud.AuthTypes, authType)
		}
	}

	// Get the credentials and region name.
	store := c.ClientStore()
	var detectedCredentialName string
	credential, credentialName, regionName, err := modelcmd.GetCredentials(
		ctx, store, modelcmd.GetCredentialsParams{
			Cloud:          *cloud,
			CloudName:      c.Cloud,
			CloudRegion:    c.Region,
			CredentialName: c.CredentialName,
		},
	)
	if errors.Cause(err) == modelcmd.ErrMultipleCredentials {
		return ambiguousCredentialError
	}
	if errors.IsNotFound(err) && c.CredentialName == "" {
		// No credential was explicitly specified, and no credential
		// was found in credentials.yaml; have the provider detect
		// credentials from the environment.
		ctx.Verbosef("no credentials found, checking environment")
		detected, err := modelcmd.DetectCredential(c.Cloud, cloud.Type)
		if errors.Cause(err) == modelcmd.ErrMultipleCredentials {
			return ambiguousDetectedCredentialError
		} else if err != nil {
			return errors.Trace(err)
		}
		// We have one credential so extract it from the map.
		var oneCredential jujucloud.Credential
		for detectedCredentialName, oneCredential = range detected.AuthCredentials {
		}
		credential = &oneCredential
		regionName = c.Region
		if regionName == "" {
			regionName = detected.DefaultRegion
		}
		logger.Debugf(
			"authenticating with region %q and credential %q (%v)",
			regionName, detectedCredentialName, credential.Label,
		)
		logger.Tracef("credential: %v", credential)
	} else if err != nil {
		return errors.Trace(err)
	}

	region, err := getRegion(cloud, c.Cloud, regionName)
	if err != nil {
		fmt.Fprintf(ctx.GetStderr(),
			"%s\n\nSpecify an alternative region, or try %q.",
			err, "juju update-clouds",
		)
		return cmd.ErrSilent
	}

	controllerModelUUID, err := utils.NewUUID()
	if err != nil {
		return errors.Trace(err)
	}
	hostedModelUUID, err := utils.NewUUID()
	if err != nil {
		return errors.Trace(err)
	}
	controllerUUID, err := utils.NewUUID()
	if err != nil {
		return errors.Trace(err)
	}

	// Create a model config, and split out any controller
	// and bootstrap config attributes.
	modelConfigAttrs := map[string]interface{}{
		"type":         cloud.Type,
		"name":         bootstrap.ControllerModelName,
		config.UUIDKey: controllerModelUUID.String(),
	}
	userConfigAttrs, err := c.config.ReadAttrs(ctx)
	if err != nil {
		return errors.Trace(err)
	}

	// The provider may define some custom attributes specific
	// to the provider. These will be added to the model config.
	providerAttrs := make(map[string]interface{})
	if ps, ok := provider.(config.ConfigSchemaSource); ok {
		for attr := range ps.ConfigSchema() {
			if v, ok := userConfigAttrs[attr]; ok {
				providerAttrs[attr] = v
			}
		}
		fields := schema.FieldMap(ps.ConfigSchema(), ps.ConfigDefaults())
		if coercedAttrs, err := fields.Coerce(providerAttrs, nil); err != nil {
			return errors.Annotatef(err, "invalid attribute value(s) for %v cloud", cloud.Type)
		} else {
			providerAttrs = coercedAttrs.(map[string]interface{})
		}
	}
	logger.Debugf("provider attrs: %v", providerAttrs)
	for k, v := range userConfigAttrs {
		modelConfigAttrs[k] = v
	}
	// Provider specific attributes are either already specified in model
	// config (but may have been coerced), or were not present. Either way,
	// copy them in.
	for k, v := range providerAttrs {
		modelConfigAttrs[k] = v
	}
	bootstrapConfigAttrs := make(map[string]interface{})
	controllerConfigAttrs := make(map[string]interface{})
	// Based on the attribute names in clouds.yaml, create
	// a map of shared config for all models on this cloud.
	inheritedControllerAttrs := make(map[string]interface{})
	for k, v := range cloud.Config {
		switch {
		case bootstrap.IsBootstrapAttribute(k):
			bootstrapConfigAttrs[k] = v
			continue
		case controller.ControllerOnlyAttribute(k):
			controllerConfigAttrs[k] = v
			continue
		}
		inheritedControllerAttrs[k] = v
	}
	for k, v := range modelConfigAttrs {
		switch {
		case bootstrap.IsBootstrapAttribute(k):
			bootstrapConfigAttrs[k] = v
			delete(modelConfigAttrs, k)
		case controller.ControllerOnlyAttribute(k):
			controllerConfigAttrs[k] = v
			delete(modelConfigAttrs, k)
		}
	}
	bootstrapConfig, err := bootstrap.NewConfig(bootstrapConfigAttrs)
	if err != nil {
		return errors.Annotate(err, "constructing bootstrap config")
	}
	controllerConfig, err := controller.NewConfig(
		controllerUUID.String(), bootstrapConfig.CACert, controllerConfigAttrs,
	)
	if err != nil {
		return errors.Annotate(err, "constructing controller config")
	}
	if err := common.FinalizeAuthorizedKeys(ctx, modelConfigAttrs); err != nil {
		return errors.Annotate(err, "finalizing authorized-keys")
	}
	logger.Debugf("preparing controller with config: %v", modelConfigAttrs)

	// Read existing current controller so we can clean up on error.
	var oldCurrentController string
	oldCurrentController, err = store.CurrentController()
	if errors.IsNotFound(err) {
		oldCurrentController = ""
	} else if err != nil {
		return errors.Annotate(err, "error reading current controller")
	}

	defer func() {
		if resultErr == nil || errors.IsAlreadyExists(resultErr) {
			return
		}
		if oldCurrentController != "" {
			if err := store.SetCurrentController(oldCurrentController); err != nil {
				logger.Errorf(
					"cannot reset current controller to %q: %v",
					oldCurrentController, err,
				)
			}
		}
		if err := store.RemoveController(c.controllerName); err != nil {
			logger.Errorf(
				"cannot destroy newly created controller %q details: %v",
				c.controllerName, err,
			)
		}
	}()

	bootstrapModelConfig := make(map[string]interface{})
	for k, v := range inheritedControllerAttrs {
		bootstrapModelConfig[k] = v
	}
	for k, v := range modelConfigAttrs {
		bootstrapModelConfig[k] = v
	}
	// Add in any default attribute values if not already
	// specified, making the recorded bootstrap config
	// immutable to changes in Juju.
	for k, v := range config.ConfigDefaults() {
		if _, ok := bootstrapModelConfig[k]; !ok {
			bootstrapModelConfig[k] = v
		}
	}

	environ, err := bootstrapPrepare(
		modelcmd.BootstrapContext(ctx), store,
		bootstrap.PrepareParams{
			ModelConfig:      bootstrapModelConfig,
			ControllerConfig: controllerConfig,
			ControllerName:   c.controllerName,
			Cloud: environs.CloudSpec{
				Type:             cloud.Type,
				Name:             c.Cloud,
				Region:           region.Name,
				Endpoint:         region.Endpoint,
				IdentityEndpoint: region.IdentityEndpoint,
				StorageEndpoint:  region.StorageEndpoint,
				Credential:       credential,
			},
			CredentialName: credentialName,
			AdminSecret:    bootstrapConfig.AdminSecret,
		},
	)
	if err != nil {
		return errors.Trace(err)
	}

	// Set the current model to the initial hosted model.
	if err := store.UpdateModel(c.controllerName, c.hostedModelName, jujuclient.ModelDetails{
		hostedModelUUID.String(),
	}); err != nil {
		return errors.Trace(err)
	}
	if err := store.SetCurrentModel(c.controllerName, c.hostedModelName); err != nil {
		return errors.Trace(err)
	}

	// Set the current controller so "juju status" can be run while
	// bootstrapping is underway.
	if err := store.SetCurrentController(c.controllerName); err != nil {
		return errors.Trace(err)
	}

	cloudRegion := c.Cloud
	if region.Name != "" {
		cloudRegion = fmt.Sprintf("%s/%s", cloudRegion, region.Name)
	}
	ctx.Infof(
		"Creating Juju controller %q on %s",
		c.controllerName, cloudRegion,
	)

	// If we error out for any reason, clean up the environment.
	defer func() {
		if resultErr != nil {
			if c.KeepBrokenEnvironment {
				ctx.Infof(`
bootstrap failed but --keep-broken was specified so resources are not being destroyed.
When you have finished diagnosing the problem, remember to clean up the failed controller.
See `[1:] + "`juju kill-controller`" + `.`)
			} else {
				handleBootstrapError(ctx, resultErr, func() error {
					return environsDestroy(
						c.controllerName, environ, store,
					)
				})
			}
		}
	}()

	// Block interruption during bootstrap. Providers may also
	// register for interrupt notification so they can exit early.
	interrupted := make(chan os.Signal, 1)
	defer close(interrupted)
	ctx.InterruptNotify(interrupted)
	defer ctx.StopInterruptNotify(interrupted)
	go func() {
		for _ = range interrupted {
			ctx.Infof("Interrupt signalled: waiting for bootstrap to exit")
		}
	}()

	// If --metadata-source is specified, override the default tools metadata source so
	// SyncTools can use it, and also upload any image metadata.
	var metadataDir string
	if c.MetadataSource != "" {
		metadataDir = ctx.AbsPath(c.MetadataSource)
	}

	// Merge environ and bootstrap-specific constraints.
	constraintsValidator, err := environ.ConstraintsValidator()
	if err != nil {
		return errors.Trace(err)
	}
	bootstrapConstraints, err := constraintsValidator.Merge(
		c.Constraints, c.BootstrapConstraints,
	)
	if err != nil {
		return errors.Trace(err)
	}
	logger.Infof("combined bootstrap constraints: %v", bootstrapConstraints)

	hostedModelConfig := map[string]interface{}{
		"name":         c.hostedModelName,
		config.UUIDKey: hostedModelUUID.String(),
	}
	for k, v := range inheritedControllerAttrs {
		hostedModelConfig[k] = v
	}

	// We copy across any user supplied attributes to the hosted model config.
	// But only if the attributes have not been removed from the controller
	// model config as part of preparing the controller model.
	controllerModelConfigAttrs := environ.Config().AllAttrs()
	for k, v := range userConfigAttrs {
		if _, ok := controllerModelConfigAttrs[k]; ok {
			hostedModelConfig[k] = v
		}
	}
	// Ensure that certain config attributes are not included in the hosted
	// model config. These attributes may be modified during bootstrap; by
	// removing them from this map, we ensure the modified values are
	// inherited.
	delete(hostedModelConfig, config.AuthorizedKeysKey)
	delete(hostedModelConfig, config.AgentVersionKey)

	// Check whether the Juju GUI must be installed in the controller.
	// Leaving this value empty means no GUI will be installed.
	var guiDataSourceBaseURL string
	if !c.noGUI {
		guiDataSourceBaseURL = common.GUIDataSourceBaseURL()
	}

	if credentialName == "" {
		// credentialName will be empty if the credential was detected.
		// We must supply a name for the credential in the database,
		// so choose one.
		credentialName = detectedCredentialName
	}

	err = bootstrapFuncs.Bootstrap(modelcmd.BootstrapContext(ctx), environ, bootstrap.BootstrapParams{
		ModelConstraints:          c.Constraints,
		BootstrapConstraints:      bootstrapConstraints,
		BootstrapSeries:           c.BootstrapSeries,
		BootstrapImage:            c.BootstrapImage,
		Placement:                 c.Placement,
		BuildAgent:                c.BuildAgent,
		BuildAgentTarball:         sync.BuildAgentTarball,
		AgentVersion:              c.AgentVersion,
		MetadataDir:               metadataDir,
		Cloud:                     *cloud,
		CloudName:                 c.Cloud,
		CloudRegion:               region.Name,
		CloudCredential:           credential,
		CloudCredentialName:       credentialName,
		ControllerConfig:          controllerConfig,
		ControllerInheritedConfig: inheritedControllerAttrs,
		RegionInheritedConfig:     cloud.RegionConfig,
		HostedModelConfig:         hostedModelConfig,
		GUIDataSourceBaseURL:      guiDataSourceBaseURL,
		AdminSecret:               bootstrapConfig.AdminSecret,
		CAPrivateKey:              bootstrapConfig.CAPrivateKey,
		DialOpts: environs.BootstrapDialOpts{
			Timeout:        bootstrapConfig.BootstrapTimeout,
			RetryDelay:     bootstrapConfig.BootstrapRetryDelay,
			AddressesDelay: bootstrapConfig.BootstrapAddressesDelay,
		},
	})
	if err != nil {
		return errors.Annotate(err, "failed to bootstrap model")
	}

	if err := c.SetModelName(modelcmd.JoinModelName(c.controllerName, c.hostedModelName)); err != nil {
		return errors.Trace(err)
	}

	agentVersion := jujuversion.Current
	if c.AgentVersion != nil {
		agentVersion = *c.AgentVersion
	}
	err = common.SetBootstrapEndpointAddress(c.ClientStore(), c.controllerName, agentVersion, controllerConfig.APIPort(), environ)
	if err != nil {
		return errors.Annotate(err, "saving bootstrap endpoint address")
	}

	// To avoid race conditions when running scripted bootstraps, wait
	// for the controller's machine agent to be ready to accept commands
	// before exiting this bootstrap command.
	return waitForAgentInitialisation(ctx, &c.ModelCommandBase, c.controllerName, c.hostedModelName)
}
Example #4
0
File: run.go Project: makyo/juju
func (c *runCommand) Run(ctx *cmd.Context) error {
	client, err := getRunAPIClient(c)
	if err != nil {
		return err
	}
	defer client.Close()

	var runResults []params.ActionResult
	if c.all {
		runResults, err = client.RunOnAllMachines(c.commands, c.timeout)
	} else {
		params := params.RunParams{
			Commands: c.commands,
			Timeout:  c.timeout,
			Machines: c.machines,
			Services: c.services,
			Units:    c.units,
		}
		runResults, err = client.Run(params)
	}

	if err != nil {
		return block.ProcessBlockedError(err, block.BlockChange)
	}

	actionsToQuery := []actionQuery{}
	for _, result := range runResults {
		if result.Error != nil {
			fmt.Fprintf(ctx.GetStderr(), "couldn't queue one action: %v", result.Error)
			continue
		}
		actionTag, err := names.ParseActionTag(result.Action.Tag)
		if err != nil {
			fmt.Fprintf(ctx.GetStderr(), "got invalid action tag %v for receiver %v", result.Action.Tag, result.Action.Receiver)
			continue
		}

		receiverTag, err := names.ActionReceiverFromTag(result.Action.Receiver)
		if err != nil {
			fmt.Fprintf(ctx.GetStderr(), "got invalid action receiver tag %v for action %v", result.Action.Receiver, result.Action.Tag)
			continue
		}
		var receiverType string
		switch receiverTag.(type) {
		case names.UnitTag:
			receiverType = "UnitId"
		case names.MachineTag:
			receiverType = "MachineId"
		default:
			receiverType = "ReceiverId"
		}
		actionsToQuery = append(actionsToQuery, actionQuery{
			actionTag: actionTag,
			receiver: actionReceiver{
				receiverType: receiverType,
				tag:          receiverTag,
			}})
	}

	if len(actionsToQuery) == 0 {
		return errors.New("no actions were successfully enqueued, aborting")
	}

	values := []interface{}{}
	for len(actionsToQuery) > 0 {
		actionResults, err := client.Actions(entities(actionsToQuery))
		if err != nil {
			return errors.Trace(err)
		}

		newActionsToQuery := []actionQuery{}
		for i, result := range actionResults.Results {
			if result.Error == nil {
				switch result.Status {
				case params.ActionRunning, params.ActionPending:
					newActionsToQuery = append(newActionsToQuery, actionsToQuery[i])
					continue
				}
			}

			values = append(values, ConvertActionResults(result, actionsToQuery[i]))
		}

		actionsToQuery = newActionsToQuery

		// TODO: use a watcher instead of sleeping
		// this should be easier once we implement action grouping
		<-afterFunc(1 * time.Second)
	}

	// If we are just dealing with one result, AND we are using the smart
	// format, then pretend we were running it locally.
	if len(values) == 1 && c.out.Name() == "smart" {
		result, ok := values[0].(map[string]interface{})
		if !ok {
			return errors.New("couldn't read action output")
		}
		if res, ok := result["Error"].(string); ok {
			return errors.New(res)
		}
		ctx.Stdout.Write(formatOutput(result, "Stdout"))
		ctx.Stderr.Write(formatOutput(result, "Stderr"))
		if code, ok := result["ReturnCode"].(int); ok && code != 0 {
			return cmd.NewRcPassthroughError(code)
		}
		// Message should always contain only errors.
		if res, ok := result["Message"].(string); ok && res != "" {
			ctx.Stderr.Write([]byte(res))
		}

		return nil
	}

	return c.out.Write(ctx, values)
}