diff --git a/ezctl b/ezctl
index bf1aee1..a34ab4d 100755
--- a/ezctl
+++ b/ezctl
@@ -294,10 +294,11 @@ function add-node() {
     [[ $2 =~ ^(2(5[0-5]{1}|[0-4][0-9]{1})|[0-1]?[0-9]{1,2})(\.(2(5[0-5]{1}|[0-4][0-9]{1})|[0-1]?[0-9]{1,2})){3}$ ]] || { logger error "Invalid ip add:$2"; return 1; }
 
     # check if the new node already exsited
-    sed -n '/^\[kube_master/,/^\[harbor/p' "$BASE/clusters/$1/hosts"|grep "^$2[^0-9]*$" && { logger error "node $2 already existed in $BASE/clusters/$1/hosts"; return 2; }
+    sed -n '/^\[kube_master/,/^\[harbor/p' "$BASE/clusters/$1/hosts"|grep "^$2[^0-9]" && { logger error "node $2 already existed in $BASE/clusters/$1/hosts"; return 2; }
 
     logger info "add $2 into 'kube_node' group"
-    sed -i "/\[kube_node/a $2 NEW_NODE=yes ${@:3}" "$BASE/clusters/$1/hosts"
+    NODE_INFO="${@:2}"
+    sed -i "/\[kube_node/a $NODE_INFO" "$BASE/clusters/$1/hosts"
 
     logger info "start to add a work node:$2 into cluster:$1"
     ansible-playbook -i "$BASE/clusters/$1/hosts" "$BASE/playbooks/22.addnode.yml" -e "NODE_TO_ADD=$2" -e "@clusters/$1/config.yml"
@@ -308,10 +309,11 @@ function add-master() {
     [[ $2 =~ ^(2(5[0-5]{1}|[0-4][0-9]{1})|[0-1]?[0-9]{1,2})(\.(2(5[0-5]{1}|[0-4][0-9]{1})|[0-1]?[0-9]{1,2})){3}$ ]] || { logger error  "Invalid ip add:$2"; return 1; }
 
     # check if the new master already exsited
-    sed -n '/^\[kube_master/,/^\[kube_node/p' "$BASE/clusters/$1/hosts"|grep "^$2[^0-9]*$" && { logger error "master $2 already existed!"; return 2; }
+    sed -n '/^\[kube_master/,/^\[kube_node/p' "$BASE/clusters/$1/hosts"|grep "^$2[^0-9]" && { logger error "master $2 already existed!"; return 2; }
 
     logger info "add $2 into 'kube_master' group"
-    sed -i "/\[kube_master/a $2 NEW_MASTER=yes ${@:3}" "$BASE/clusters/$1/hosts"
+    MASTER_INFO="${@:2}"
+    sed -i "/\[kube_master/a $MASTER_INFO" "$BASE/clusters/$1/hosts"
 
     logger info "start to add a master node:$2 into cluster:$1"
     ansible-playbook -i "$BASE/clusters/$1/hosts" "$BASE/playbooks/23.addmaster.yml" -e "NODE_TO_ADD=$2" -e "@clusters/$1/config.yml"
@@ -325,10 +327,11 @@ function add-etcd() {
     [[ $2 =~ ^(2(5[0-5]{1}|[0-4][0-9]{1})|[0-1]?[0-9]{1,2})(\.(2(5[0-5]{1}|[0-4][0-9]{1})|[0-1]?[0-9]{1,2})){3}$ ]] || { logger error  "Invalid ip add:$2"; return 1; }
 
     # check if the new node already exsited
-    sed -n '/^\[etcd/,/^\[kube_master/p' "$BASE/clusters/$1/hosts"|grep "^$2[^0-9]*$" && { logger error "etcd $2 already existed!"; return 2; }
+    sed -n '/^\[etcd/,/^\[kube_master/p' "$BASE/clusters/$1/hosts"|grep "^$2[^0-9]" && { logger error "etcd $2 already existed!"; return 2; }
 
     logger info "add $2 into 'etcd' group"
-    sed -i "/\[etcd/a $2 NEW_ETCD=yes ${@:3}" "$BASE/clusters/$1/hosts" 
+    ETCD_INFO="${@:2}"
+    sed -i "/\[etcd/a $ETCD_INFO" "$BASE/clusters/$1/hosts"
 
     logger info "start to add a etcd node:$2 into cluster:$1"
     ansible-playbook -i "$BASE/clusters/$1/hosts" "$BASE/playbooks/21.addetcd.yml" -e "NODE_TO_ADD=$2" -e "@clusters/$1/config.yml"
diff --git a/playbooks/31.deletcd.yml b/playbooks/31.deletcd.yml
index 04eaf25..8b02883 100644
--- a/playbooks/31.deletcd.yml
+++ b/playbooks/31.deletcd.yml
@@ -73,7 +73,7 @@
 
     # lineinfile is inadequate to delete lines between some specific line range
     - name: remove the etcd's node entry in hosts
-      shell: 'sed -i "/^\[etcd/,/^\[kube_master/ {/^{{ ETCD_TO_DEL }}[^0-9]*$/d}" {{ base_dir }}/clusters/{{ CLUSTER }}/hosts'
+      shell: 'sed -i "/^\[etcd/,/^\[kube_master/ {/^{{ ETCD_TO_DEL }}[^0-9].*$/d}" {{ base_dir }}/clusters/{{ CLUSTER }}/hosts'
       args:
         warn: false
     when: "groups['etcd']|length > 1 and ETCD_TO_DEL in groups['etcd']" 
diff --git a/playbooks/32.delnode.yml b/playbooks/32.delnode.yml
index a37ec98..caeddbd 100644
--- a/playbooks/32.delnode.yml
+++ b/playbooks/32.delnode.yml
@@ -26,6 +26,6 @@
 
   # lineinfile is inadequate to delete lines between some specific line range
   - name: remove the node's entry in hosts
-    shell: 'sed -i "/^\[kube_node/,/^\[harbor/ {/^{{ NODE_TO_DEL }}[^0-9]*$/d}" {{ base_dir }}/clusters/{{ CLUSTER }}/hosts'
+    shell: 'sed -i "/^\[kube_node/,/^\[harbor/ {/^{{ NODE_TO_DEL }}[^0-9].*$/d}" {{ base_dir }}/clusters/{{ CLUSTER }}/hosts'
     args:
       warn: false
diff --git a/playbooks/33.delmaster.yml b/playbooks/33.delmaster.yml
index 4b01e03..8c2f8bb 100644
--- a/playbooks/33.delmaster.yml
+++ b/playbooks/33.delmaster.yml
@@ -27,6 +27,6 @@
 
   # lineinfile is inadequate to delete lines between some specific line range
   - name: remove the master's entry in hosts
-    shell: 'sed -i "/^\[kube_master/,/^\[harbor/ {/^{{ NODE_TO_DEL }}[^0-9]*$/d}" {{ base_dir }}/clusters/{{ CLUSTER }}/hosts'
+    shell: 'sed -i "/^\[kube_master/,/^\[harbor/ {/^{{ NODE_TO_DEL }}[^0-9].*$/d}" {{ base_dir }}/clusters/{{ CLUSTER }}/hosts'
     args:
       warn: false