diff --git a/example/config.yml b/example/config.yml
index e498af2..d013ecc 100644
--- a/example/config.yml
+++ b/example/config.yml
@@ -26,6 +26,13 @@ CONTEXT_NAME: "context-{{ CLUSTER_NAME }}"
 # k8s version
 K8S_VER: "__k8s_ver__"
 
+# set unique 'k8s_nodename' for each node, if not set(default:'') ip add will be used
+K8S_NODENAME: "{%- if k8s_nodename != '' -%} \
+                    {{ k8s_nodename }} \
+               {%- else -%} \
+                    {{ inventory_hostname }} \
+               {%- endif -%}"
+
 ############################
 # role:etcd
 ############################
diff --git a/example/hosts.allinone b/example/hosts.allinone
index 042cf4c..9713b9c 100644
--- a/example/hosts.allinone
+++ b/example/hosts.allinone
@@ -64,9 +64,5 @@ cluster_dir="{{ base_dir }}/clusters/_cluster_name_"
 # CA and other components cert/key Directory
 ca_dir="/etc/kubernetes/ssl"
 
-# set unique 'k8s_nodename' for each node, if not set(default:'') ip add will be used
-K8S_NODENAME: "{%- if k8s_nodename != '' -%} \
-                    {{ k8s_nodename }} \
-               {%- else -%} \
-                    {{ inventory_hostname }} \
-               {%- endif -%}"
+# Default 'k8s_nodename' is empty
+k8s_nodename=''
diff --git a/example/hosts.multi-node b/example/hosts.multi-node
index b8bc964..ad13263 100644
--- a/example/hosts.multi-node
+++ b/example/hosts.multi-node
@@ -68,9 +68,5 @@ cluster_dir="{{ base_dir }}/clusters/_cluster_name_"
 # CA and other components cert/key Directory
 ca_dir="/etc/kubernetes/ssl"
 
-# set unique 'k8s_nodename' for each node, if not set(default:'') ip add will be used
-K8S_NODENAME: "{%- if k8s_nodename != '' -%} \
-                    {{ k8s_nodename }} \
-               {%- else -%} \
-                    {{ inventory_hostname }} \
-               {%- endif -%}"
+# Default 'k8s_nodename' is empty
+k8s_nodename=''
diff --git a/playbooks/32.delnode.yml b/playbooks/32.delnode.yml
index fe0701c..e8d5309 100644
--- a/playbooks/32.delnode.yml
+++ b/playbooks/32.delnode.yml
@@ -20,8 +20,14 @@
   - name: debug info
     debug: var="DRAIN_OPT"
 
-  - name: run kubectl drain @{{ NODE_TO_DEL }}
-    shell: "{{ base_dir }}/bin/kubectl drain {{ NODE_TO_DEL }} {{ DRAIN_OPT }}"
+  - name: get the node name to delete
+    shell: "{{ base_dir }}/bin/kubectl get node -owide|grep ' {{ NODE_TO_DEL }} '|awk '{print $1}'"
+    register: NODE_NAME
+
+  - debug: var="NODE_NAME.stdout"
+
+  - name: run kubectl drain @{{ NODE_NAME.stdout }}
+    shell: "{{ base_dir }}/bin/kubectl drain {{ NODE_NAME.stdout }} {{ DRAIN_OPT }}"
     #ignore_errors: true
 
   - name: clean node {{ NODE_TO_DEL }}
@@ -35,8 +41,8 @@
 
   - debug: var="CLEAN_STATUS"
 
-  - name: run kubectl delete node {{ NODE_TO_DEL }}
-    shell: "{{ base_dir }}/bin/kubectl delete node {{ NODE_TO_DEL }}"
+  - name: run kubectl delete node {{ NODE_NAME.stdout }}
+    shell: "{{ base_dir }}/bin/kubectl delete node {{ NODE_NAME.stdout }}"
     ignore_errors: true
 
   # lineinfile is inadequate to delete lines between some specific line range
diff --git a/playbooks/33.delmaster.yml b/playbooks/33.delmaster.yml
index 9016288..7c57b97 100644
--- a/playbooks/33.delmaster.yml
+++ b/playbooks/33.delmaster.yml
@@ -20,8 +20,14 @@
   - name: debug info
     debug: var="DRAIN_OPT"
 
-  - name: run kubectl drain @{{ NODE_TO_DEL }}
-    shell: "{{ base_dir }}/bin/kubectl drain {{ NODE_TO_DEL }} {{ DRAIN_OPT }}"
+  - name: get the node name to delete
+    shell: "{{ base_dir }}/bin/kubectl get node -owide|grep ' {{ NODE_TO_DEL }} '|awk '{print $1}'"
+    register: NODE_NAME
+
+  - debug: var="NODE_NAME.stdout"
+
+  - name: run kubectl drain @{{ NODE_NAME.stdout }}
+    shell: "{{ base_dir }}/bin/kubectl drain {{ NODE_NAME.stdout }} {{ DRAIN_OPT }}"
     #ignore_errors: true
 
   - name: clean node {{ NODE_TO_DEL }}
@@ -36,8 +42,8 @@
 
   - debug: var="CLEAN_STATUS"
 
-  - name: run kubectl delete node {{ NODE_TO_DEL }}
-    shell: "{{ base_dir }}/bin/kubectl delete node {{ NODE_TO_DEL }}"
+  - name: run kubectl delete node {{ NODE_NAME.stdout }}
+    shell: "{{ base_dir }}/bin/kubectl delete node {{ NODE_NAME.stdout }}"
     ignore_errors: true
 
   # lineinfile is inadequate to delete lines between some specific line range