Exemple #1
0
func (s *BootstrapSuite) TestCannotStartInstance(c *gc.C) {
	checkPlacement := "directive"
	checkCons := constraints.MustParse("mem=8G")

	startInstance := func(
		placement string, cons constraints.Value, _, _ []string, possibleTools tools.List, mcfg *cloudinit.MachineConfig,
	) (
		instance.Instance, *instance.HardwareCharacteristics, []network.Info, error,
	) {
		c.Assert(placement, gc.DeepEquals, checkPlacement)
		c.Assert(cons, gc.DeepEquals, checkCons)
		c.Assert(mcfg, gc.DeepEquals, environs.NewBootstrapMachineConfig(mcfg.SystemPrivateSSHKey))
		return nil, nil, nil, fmt.Errorf("meh, not started")
	}

	env := &mockEnviron{
		storage:       newStorage(s, c),
		startInstance: startInstance,
		config:        configGetter(c),
	}

	ctx := coretesting.Context(c)
	err := common.Bootstrap(ctx, env, environs.BootstrapParams{
		Constraints: checkCons,
		Placement:   checkPlacement,
	})
	c.Assert(err, gc.ErrorMatches, "cannot start bootstrap instance: meh, not started")
}
Exemple #2
0
// Bootstrap is a common implementation of the Bootstrap method defined on
// environs.Environ; we strongly recommend that this implementation be used
// when writing a new provider.
func Bootstrap(ctx environs.BootstrapContext, env environs.Environ, args environs.BootstrapParams) (err error) {
	// TODO make safe in the case of racing Bootstraps
	// If two Bootstraps are called concurrently, there's
	// no way to make sure that only one succeeds.

	var inst instance.Instance
	defer func() { handleBootstrapError(err, ctx, inst, env) }()

	// First thing, ensure we have tools otherwise there's no point.
	selectedTools, err := EnsureBootstrapTools(ctx, env, config.PreferredSeries(env.Config()), args.Constraints.Arch)
	if err != nil {
		return err
	}

	// Get the bootstrap SSH client. Do this early, so we know
	// not to bother with any of the below if we can't finish the job.
	client := ssh.DefaultClient
	if client == nil {
		// This should never happen: if we don't have OpenSSH, then
		// go.crypto/ssh should be used with an auto-generated key.
		return fmt.Errorf("no SSH client available")
	}

	privateKey, err := GenerateSystemSSHKey(env)
	if err != nil {
		return err
	}
	machineConfig := environs.NewBootstrapMachineConfig(privateKey)

	fmt.Fprintln(ctx.GetStderr(), "Launching instance")
	inst, hw, _, err := env.StartInstance(environs.StartInstanceParams{
		Constraints:   args.Constraints,
		Tools:         selectedTools,
		MachineConfig: machineConfig,
		Placement:     args.Placement,
	})
	if err != nil {
		return fmt.Errorf("cannot start bootstrap instance: %v", err)
	}
	fmt.Fprintf(ctx.GetStderr(), " - %s\n", inst.Id())
	machineConfig.InstanceId = inst.Id()
	machineConfig.HardwareCharacteristics = hw

	err = bootstrap.SaveState(
		env.Storage(),
		&bootstrap.BootstrapState{
			StateInstances: []instance.Id{inst.Id()},
		})
	if err != nil {
		return fmt.Errorf("cannot save state: %v", err)
	}
	return FinishBootstrap(ctx, client, inst, machineConfig)
}
Exemple #3
0
func (s *configureSuite) getCloudConfig(c *gc.C, stateServer bool, vers version.Binary) *cloudinit.Config {
	var mcfg *envcloudinit.MachineConfig
	if stateServer {
		mcfg = environs.NewBootstrapMachineConfig("private-key")
		mcfg.InstanceId = "instance-id"
		mcfg.Jobs = []params.MachineJob{params.JobManageEnviron, params.JobHostUnits}
	} else {
		mcfg = environs.NewMachineConfig("0", "ya", nil, nil, nil, nil)
		mcfg.Jobs = []params.MachineJob{params.JobHostUnits}
	}
	mcfg.Tools = &tools.Tools{
		Version: vers,
		URL:     "file:///var/lib/juju/storage/" + envtools.StorageName(vers),
	}
	environConfig := testConfig(c, stateServer, vers)
	err := environs.FinishMachineConfig(mcfg, environConfig, constraints.Value{})
	c.Assert(err, gc.IsNil)
	cloudcfg := cloudinit.New()
	err = envcloudinit.Configure(mcfg, cloudcfg)
	c.Assert(err, gc.IsNil)
	return cloudcfg
}
Exemple #4
0
// NewManualBootstrapEnviron wraps a LocalStorageEnviron with another which
// overrides the Bootstrap method; when Bootstrap is invoked, the specified
// host will be manually bootstrapped.
//
// InitUbuntuUser is expected to have been executed successfully against
// the host being bootstrapped.
func Bootstrap(args BootstrapArgs) (err error) {
	if args.Host == "" {
		return errors.New("host argument is empty")
	}
	if args.Environ == nil {
		return errors.New("environ argument is nil")
	}
	if args.DataDir == "" {
		return errors.New("data-dir argument is empty")
	}
	if args.Series == "" {
		return errors.New("series argument is empty")
	}
	if args.HardwareCharacteristics == nil {
		return errors.New("hardware characteristics argument is empty")
	}
	if len(args.PossibleTools) == 0 {
		return errors.New("possible tools is empty")
	}

	provisioned, err := checkProvisioned(args.Host)
	if err != nil {
		return fmt.Errorf("failed to check provisioned status: %v", err)
	}
	if provisioned {
		return ErrProvisioned
	}

	// Filter tools based on detected series/arch.
	logger.Infof("Filtering possible tools: %v", args.PossibleTools)
	possibleTools, err := args.PossibleTools.Match(tools.Filter{
		Arch:   *args.HardwareCharacteristics.Arch,
		Series: args.Series,
	})
	if err != nil {
		return err
	}

	// Store the state file. If provisioning fails, we'll remove the file.
	logger.Infof("Saving bootstrap state file to bootstrap storage")
	bootstrapStorage := args.Environ.Storage()
	err = bootstrap.SaveState(
		bootstrapStorage,
		&bootstrap.BootstrapState{
			StateInstances: []instance.Id{BootstrapInstanceId},
		},
	)
	if err != nil {
		return err
	}
	defer func() {
		if err != nil {
			logger.Errorf("bootstrapping failed, removing state file: %v", err)
			bootstrapStorage.Remove(bootstrap.StateFile)
		}
	}()

	// If the tools are on the machine already, get a file:// scheme tools URL.
	tools := *possibleTools[0]
	storageDir := args.Environ.StorageDir()
	toolsStorageName := envtools.StorageName(tools.Version)
	if url, _ := bootstrapStorage.URL(toolsStorageName); url == tools.URL {
		tools.URL = fmt.Sprintf("file://%s/%s", storageDir, toolsStorageName)
	}

	// Add the local storage configuration.
	agentEnv, err := localstorage.StoreConfig(args.Environ)
	if err != nil {
		return err
	}

	privateKey, err := common.GenerateSystemSSHKey(args.Environ)
	if err != nil {
		return err
	}

	// Finally, provision the machine agent.
	mcfg := environs.NewBootstrapMachineConfig(privateKey)
	mcfg.InstanceId = BootstrapInstanceId
	mcfg.HardwareCharacteristics = args.HardwareCharacteristics
	if args.DataDir != "" {
		mcfg.DataDir = args.DataDir
	}
	mcfg.Tools = &tools
	err = environs.FinishMachineConfig(mcfg, args.Environ.Config(), constraints.Value{})
	if err != nil {
		return err
	}
	for k, v := range agentEnv {
		mcfg.AgentEnvironment[k] = v
	}
	return provisionMachineAgent(args.Host, mcfg, args.Context.GetStderr())
}