add hostname in cloud-init metadata (#70)

go.mod

@@ -6,6 +6,7 @@ replace github.com/docker/docker => github.com/docker/engine v17.12.0-ce-rc1.0.2
 
 require (
 	github.com/docker/machine v0.16.2
+	github.com/google/uuid v1.3.1
 	github.com/nutanix-cloud-native/prism-go-client v0.2.0
 	github.com/sirupsen/logrus v1.9.3
 	gopkg.in/yaml.v3 v3.0.1

go.sum

@@ -89,6 +89,8 @@ github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8
 github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
 github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/google/uuid v1.3.1 h1:KjJaJ9iWZ3jOFZIf1Lqf4laDRCasjl0BCmnEGxkdLb4=
+github.com/google/uuid v1.3.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
 github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
 github.com/hashicorp/go-checkpoint v0.5.0/go.mod h1:7nfLNL10NsxqO4iWuW6tWW0HjZuDrwkBuEQsVcpCOgg=

machine/driver/driver.go

@@ -14,6 +14,7 @@ import (
 	"github.com/docker/machine/libmachine/mcnflag"
 	"github.com/docker/machine/libmachine/ssh"
 	"github.com/docker/machine/libmachine/state"
+	"github.com/google/uuid"
 	"github.com/nutanix/docker-machine/utils"
 	log "github.com/sirupsen/logrus"
 	"gopkg.in/yaml.v3"
@@ -387,8 +388,16 @@ func (d *NutanixDriver) Create() error {
 		userdata = []byte("#cloud-config\r\nusers:\r\n - name: root\r\n   ssh_authorized_keys:\r\n    - " + string(pubKey))
 	}
 
+	// Generate metadata for the VM
+	specUUID := uuid.New()
+	cloudMetadata := fmt.Sprintf("{\"hostname\": \"%s\", \"uuid\": \"%s\"}", name, specUUID)
+
+	// Encode the metadata by base64
+	metadataEncoded := base64.StdEncoding.EncodeToString([]byte(cloudMetadata))
+
 	cloudInit := &v3.GuestCustomizationCloudInit{
 		UserData: utils.StringPtr(base64.StdEncoding.EncodeToString(userdata)),
+		MetaData: utils.StringPtr(metadataEncoded),
 	}
 
 	guestCustomization := &v3.GuestCustomization{
@@ -399,7 +408,7 @@ func (d *NutanixDriver) Create() error {
 
 	metadata.Kind = utils.StringPtr("vm")
 	spec.Name = utils.StringPtr(name)
-	spec.Description = utils.StringPtr("VM created by docker-image")
+	spec.Description = utils.StringPtr("VM created by Nutanix Rancher Node Driver")
 	res.PowerState = utils.StringPtr("ON")
 	spec.Resources = res
 	request.Metadata = metadata