diff --git a/console/cli.go b/console/cli.go
index 1598b38..1068172 100644
--- a/console/cli.go
+++ b/console/cli.go
@@ -8,6 +8,7 @@ import (
 	"strconv"
 	"strings"
 	"time"
+	"sort"
 )
 
 var (
@@ -52,6 +53,26 @@ func KeyValueToMap(value string, sep string) (map[string]interface{}, error) {
 	return m, nil
 }
 
+type nodeHost struct {
+	name string
+	host string
+}
+type nodeHostSlice []nodeHost
+func (a nodeHostSlice) Len() int {
+	return len(a)
+}
+
+func (a nodeHostSlice) Swap(i, j int) {
+	a[i], a[j] = a[j], a[i]
+}
+
+func (a nodeHostSlice) Less(i, j int) bool {
+	if strings.Compare(a[i].name, a[j].name) == -1 {
+		return true
+	}
+	return false
+}
+
 type CongoCli struct {
 	baseUrl string
 	cmd     *cobra.Command
@@ -99,9 +120,15 @@ func (c *CongoCli) list(cmd *cobra.Command, args []string) {
 		fmt.Printf("Could not find any record.\n")
 		os.Exit(0)
 	}
+	tempNodes := make([]nodeHost, 0, len(nodes))
 	for _, v := range nodes {
 		node := v.(map[string]interface{})
-		fmt.Printf("%s (host: %s)\n", node["name"], node["host"])
+		tempNodes = append(tempNodes, nodeHost{name:node["name"].(string),
+			host: node["host"].(string)})
+	}
+	sort.Sort(nodeHostSlice(tempNodes))
+	for _, v := range tempNodes {
+		fmt.Printf("%s (host: %s)\n", v.name, v.host)
 	}
 }
 
@@ -121,6 +148,10 @@ func (c *CongoCli) show(cmd *cobra.Command, args []string) {
 		fmt.Fprintf(os.Stderr, "Usage: congo show <node> \n")
 		os.Exit(1)
 	}
+	if strings.HasPrefix(".", args[0]) || strings.HasPrefix("/", args[0]){
+		fmt.Fprintf(os.Stderr, "Error: node name could not start with '.' or '/'\n")
+		os.Exit(1)
+	}
 	ret, err := congo.Show(args[0])
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Could not get resources detail, %s\n", err.Error())
@@ -146,6 +177,10 @@ func (c *CongoCli) logging(cmd *cobra.Command, args []string) {
 		fmt.Fprintf(os.Stderr, "Usage: congo logging <node> on/off \n")
 		os.Exit(1)
 	}
+	if strings.HasPrefix(".", args[0]) || strings.HasPrefix("/", args[0]){
+		fmt.Fprintf(os.Stderr, "Error: node name could not start with '.' or '/'\n")
+		os.Exit(1)
+	}
 	if args[1] != "on" && args[1] != "off" {
 		fmt.Fprintf(os.Stderr, "Usage: congo logging <node> on/off \n")
 		os.Exit(1)
@@ -173,6 +208,10 @@ func (c *CongoCli) delete(cmd *cobra.Command, args []string) {
 		fmt.Fprintf(os.Stderr, "Usage: congo delete <node>\n")
 		os.Exit(1)
 	}
+	if strings.HasPrefix(".", args[0]) || strings.HasPrefix("/", args[0]){
+		fmt.Fprintf(os.Stderr, "Error: node name could not start with '.' or '/'\n")
+		os.Exit(1)
+	}
 	_, err := congo.Delete(args[0])
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "%s\n", err.Error())
@@ -200,6 +239,10 @@ func (c *CongoCli) create(cmd *cobra.Command, args []string) {
 		fmt.Fprintf(os.Stderr, "Usage: congo create <node> driver=ssh ondemand=true --param key=val,key=val\n")
 		os.Exit(1)
 	}
+	if strings.HasPrefix(".", args[0]) || strings.HasPrefix("/", args[0]){
+		fmt.Fprintf(os.Stderr, "Error: node name could not start with '.' or '/'\n")
+		os.Exit(1)
+	}
 	attribs, err := KeyValueArrayToMap(args[1:], "=")
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Parse failed, err=%s\n", err.Error())
@@ -234,6 +277,10 @@ func (c *CongoCli) console(cmd *cobra.Command, args []string) {
 		fmt.Fprintf(os.Stderr, "Usage: congo console <node>\n")
 		os.Exit(1)
 	}
+	if strings.HasPrefix(".", args[0]) || strings.HasPrefix("/", args[0]){
+		fmt.Fprintf(os.Stderr, "Error: node name could not start with '.' or '/'\n")
+		os.Exit(1)
+	}
 	retry := true
 	common.NewTaskManager(100, 16)
 	for retry {
diff --git a/console/server.go b/console/server.go
index 03aa01c..52ccfc1 100644
--- a/console/server.go
+++ b/console/server.go
@@ -512,11 +512,7 @@ func (m *NodeManager) ShowNode(name string) (*Node, int, string) {
 			return nil, http.StatusBadRequest, fmt.Sprintf("The node %s is not exist.", name)
 		}
 		node = nodeManager.Nodes[name]
-		if err := node.RequireLock(true); err != nil {
-			return nil, http.StatusConflict, err.Error()
-		}
 		node.State = STATUS_MAP[node.GetStatus()]
-		node.Release(true)
 	} else {
 		nodeWithHost := m.stor.ListNodeWithHost()
 		if nodeWithHost == nil {