83-add-etcd.yml

- hosts: all
  gather_facts: false
  tasks:
    - name: "设置代理服务器环境变量"
      set_fact:
        proxy_env:
          http_proxy: "{{ http_proxy | default ('') }}"
          HTTP_PROXY: "{{ http_proxy | default ('') }}"
          https_proxy: "{{ https_proxy | default ('') }}"
          HTTPS_PROXY: "{{ https_proxy | default ('') }}"
          no_proxy: "{{ no_proxy | default ('') }}"
          NO_PROXY: "{{ no_proxy | default ('') }}"
      no_log: true

- hosts: new-etcd[0]
  tasks:
  - name: 校验 new-etcd 节点组数量
    assert:
      that: groups['new-etcd']|length <= 1
      msg: "同时只能添加一个 etcd 节点。"

- hosts: 
  - new-etcd
  roles:
  - prepare/variables
  - prepare/base
  - prepare/container-engine
  - prepare/kubernetes
  environment: "{{ proxy_env }}"

- hosts: 
  - etcd
  - new-etcd
  roles:
  - prepare/variables
  - etcd/certificates
  - etcd/install

# 添加etcd节点后刷新master节点kubeadm配置
- hosts: 
  - kube-master
  roles:
  - prepare/variables
  - kube-master

# 标记各节点角色
- hosts: 
  - new-etcd
  roles:
  - prepare/variables
  - post

- hosts: 
  - kube-master
  roles:
  - prepare/variables
  tasks:
  - name: "更新第一个 master 节点：{{ inventory_hostname }} 的配置"
    shell: >
      kubeadm upgrade apply --config=/etc/kubernetes/kubeadm-config.yaml --force --ignore-preflight-errors=ImagePull
    when: inventory_hostname == groups['kube-master'][0]
  
  - name: "更新 master 节点：{{ inventory_hostname }} 的配置"
    shell: >
      kubeadm upgrade node
      {% if kube_version.split('.')[1]|int == 13 %}
      experimental-control-plane
      {% endif %}
    when: 
    - inventory_hostname != groups['kube-master'][0]
    - inventory_hostname in groups['kube-master']