fix(osctl): output talosconfig on generate (#627)

Signed-off-by: Andrew Rynhard <andrew@andrewrynhard.com>

cmd/osctl/cmd/cluster.go

@@ -316,8 +316,8 @@ func saveConfig(input *generate.Input) (err error) {
 
 func init() {
 	clusterUpCmd.Flags().StringVar(&image, "image", "docker.io/autonomy/talos:"+version.Tag, "the image to use")
+	clusterUpCmd.Flags().IntVar(&workers, "workers", 1, "the number of workers to create")
 	clusterCmd.PersistentFlags().StringVar(&clusterName, "name", "talos_default", "the name of the cluster")
-	clusterCmd.PersistentFlags().IntVar(&workers, "workers", 1, "the number of workers to create")
 	clusterCmd.AddCommand(clusterUpCmd)
 	clusterCmd.AddCommand(clusterDownCmd)
 	rootCmd.AddCommand(clusterCmd)

cmd/osctl/cmd/config.go

@@ -131,7 +131,8 @@ var configGenerateCmd = &cobra.Command{
 
 		types := []generate.Type{generate.TypeInit, generate.TypeControlPlane, generate.TypeJoin}
 		for _, t := range types {
-			data, err := generate.Userdata(t, input)
+			var data string
+			data, err = generate.Userdata(t, input)
 			if err != nil {
 				helpers.Fatalf("failed to generate configuration file for type %s: %v", t.String(), err)
 			}
@@ -146,6 +147,14 @@ var configGenerateCmd = &cobra.Command{
 				helpers.Fatalf("%v", err)
 			}
 		}
+
+		data, err := generate.Talosconfig(input)
+		if err != nil {
+			helpers.Fatalf("failed to generate talosconfig: %v", err)
+		}
+		if err = ioutil.WriteFile("talosconfig", []byte(data), 0644); err != nil {
+			helpers.Fatalf("%v", err)
+		}
 	},
 }
 

cmd/osctl/pkg/client/config/config.go

@@ -7,6 +7,7 @@ package config
 import (
 	"io/ioutil"
 	"os"
+	"path/filepath"
 
 	yaml "gopkg.in/yaml.v2"
 )
@@ -61,6 +62,10 @@ func (c *Config) Save(p string) (err error) {
 		return
 	}
 
+	if err = os.MkdirAll(filepath.Dir(p), 0700); err != nil {
+		return err
+	}
+
 	if err = ioutil.WriteFile(p, configBytes, 0600); err != nil {
 		return
 	}

pkg/userdata/userdata.go

@@ -277,6 +277,11 @@ func checkCertKeyPair(certs []certTest) error {
 			continue
 		}
 
+		// If it isn't required, there is a chance that it is nil.
+		if cert.Cert == nil {
+			continue
+		}
+
 		if cert.Cert.Crt == nil {
 			result = multierror.Append(result, xerrors.Errorf("[%s] %q: %w", cert.Path+".crt", "", ErrRequiredSection))
 		}