diff --git a/client/cloudinit/metadata.go b/client/cloudinit/metadata.go
index 8444c4b9..939d25fe 100644
--- a/client/cloudinit/metadata.go
+++ b/client/cloudinit/metadata.go
@@ -1,8 +1,8 @@
 package cloudinit
 
 type Metadata struct {
-	InstanceID    string `yaml:"instance_id"`
-	LocalHostname string `yaml:"local_hostname"`
-	Platform      string `yaml:"platform"`
-	ClusterName   string `yaml:"cluster_name"`
+	InstanceID    string `yaml:"instance_id",json:"instance_id"`
+	LocalHostname string `yaml:"local_hostname",json:"local_hostname"`
+	Platform      string `yaml:"platform",json:"platform"`
+	ClusterName   string `yaml:"cluster_name",json:"cluster_name"`
 }