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")
}
// 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)
}
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
}
// 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())
}