fix2: set /etc/hosts entries for k8s_nodename

playbooks/22.addnode.yml

@@ -1,15 +1,4 @@
 # Note: this playbook can not run independently
-- hosts: "{{ NODE_TO_ADD }}"
-  tasks:
-  - name: 设置 k8s_nodename 在 master、node 节点 /etc/hosts 地址解析
-    lineinfile:
-      dest: /etc/hosts
-      state: present
-      regexp: "{{ K8S_NODENAME }} .* generated by kubeasz"
-      line: "{{ inventory_hostname }}    {{ K8S_NODENAME }} # generated by kubeasz"
-    delegate_to: "{{ item }}"
-    with_items: ["{{ groups.kube_master }}", "{{ groups.kube_node }}"]
-    when: "inventory_hostname != K8S_NODENAME"
 
 - hosts: "{{ NODE_TO_ADD }}" 
   roles:

playbooks/23.addmaster.yml

@@ -1,15 +1,4 @@
 # Note: this playbook cann't run independently
-- hosts: "{{ NODE_TO_ADD }}"
-  tasks:
-  - name: 设置 k8s_nodename 在 master、node 节点 /etc/hosts 地址解析
-    lineinfile:
-      dest: /etc/hosts
-      state: present
-      regexp: "{{ K8S_NODENAME }} .* generated by kubeasz"
-      line: "{{ inventory_hostname }}    {{ K8S_NODENAME }} # generated by kubeasz"
-    delegate_to: "{{ item }}"
-    with_items: ["{{ groups.kube_master }}", "{{ groups.kube_node }}"]
-    when: "inventory_hostname != K8S_NODENAME"
 
 - hosts: "{{ NODE_TO_ADD }}" 
   roles:

roles/clean/tasks/main.yml

@@ -27,6 +27,12 @@
   - 'HELM_TLS_ENABLE'
   when: 'DEL_ENV == "yes"'
 
+- name: 删除 k8s_nodename 在节点的 /etc/hosts 地址解析
+  blockinfile:
+    path: /etc/hosts
+    state: absent
+    marker: "### {mark} KUBEASZ MANAGED BLOCK"
+
   #- name: remove binaries
   #  file: name={{ item }} state=absent
   #  with_items:

roles/prepare/tasks/main.yml

@@ -44,7 +44,6 @@
 
 # 设置节点名称{{ K8S_NODENAME }} /etc/hosts 解析
 # 1.先确保第一个主节点做好解析
-# 2.然后复制给集群所有节点
 - name: 设置 k8s_nodename 在 master[0] 节点 /etc/hosts 地址解析
   lineinfile:
     dest: /etc/hosts
@@ -54,18 +53,26 @@
   delegate_to: "{{ groups.kube_master[0] }}"
   when: "inventory_hostname != K8S_NODENAME"
 
-- name: 获取 master[0] 节点由kubeasz 创建的 /etc/hosts 地址解析
-  shell: 'grep "generated by kubeasz" /etc/hosts'
-  register: RESOLVE_K8S_NODENAME
-  delegate_to: "{{ groups.kube_master[0] }}"
+# 2.然后复制给集群所有节点
+- block:
+  - name: 获取 master[0] 节点由kubeasz 创建的 /etc/hosts 地址解析
+    shell: 'grep "generated by kubeasz" /etc/hosts|sort|uniq'
+    register: RESOLVE_K8S_NODENAME
+    delegate_to: "{{ groups.kube_master[0] }}"
+
+  - name: 删除 master[0] 节点由kubeasz 创建的 /etc/hosts 地址解析
+    lineinfile:
+      dest: /etc/hosts
+      state: absent
+      regexp: "generated by kubeasz"
+    delegate_to: "{{ groups.kube_master[0] }}"
+
+  - name: 设置 k8s_nodename 在所有节点的 /etc/hosts 地址解析
+    blockinfile:
+      path: /etc/hosts
+      block: |
+        {{ RESOLVE_K8S_NODENAME.stdout }}
+      marker: "### {mark} KUBEASZ MANAGED BLOCK"
+    delegate_to: "{{ item }}"
+    with_items: ["{{ groups.kube_master }}", "{{ groups.kube_node }}"]
   run_once: true
-
-#- debug: var="RESOLVE_K8S_NODENAME.stdout"
-#  run_once: true
-
-- name: 设置 /etc/hosts 地址解析
-  blockinfile:
-    path: /etc/hosts
-    block: |
-      {{ RESOLVE_K8S_NODENAME.stdout }}
-  when: "inventory_hostname != groups.kube_master[0]"