kubeasz/roles/cluster-addon/tasks/main.yml

- block:
    - name: 在deploy 节点创建相关目录
      file: path={{ item }} state=directory
      with_items:
      - /opt/kube/kube-system/kubedns
      - /opt/kube/kube-system/coredns
    
    # DNS文件中部分参数根据hosts文件设置而定，因此需要用template模块替换参数
    - name: 准备 DNS的部署文件
      template: src={{ item }}.yaml.j2 dest=/opt/kube/kube-system/{{ item }}/{{ item }}.yaml
      with_items:
      - kubedns
      - coredns
    
    - name: 获取所有已经创建的POD信息
      command: "{{ bin_dir }}/kubectl get pod --all-namespaces"
      register: pod_info
  delegate_to: "{{ groups.deploy[0] }}"
  run_once: true

- name: 获取已下载离线镜像信息
  command: "ls {{ base_dir }}/down"
  register: download_info
  connection: local
  run_once: true

- block:
    - block:
        - name: 尝试推送离线{{ dns_backend }}镜像（若执行失败，可忽略）
          copy: src={{ base_dir }}/down/{{ dns_offline }} dest=/opt/kube/images/{{ dns_offline }}
          when: 'dns_offline in download_info.stdout'
    
        - name: 获取{{ dns_backend }}离线镜像推送情况
          command: "ls /opt/kube/images"
          register: image_info     
     
        - name: 导入{{ dns_backend }}的离线镜像（若执行失败，可忽略）
          shell: "{{ bin_dir }}/docker load -i /opt/kube/images/{{ dns_offline }}"
          when: 'dns_offline in image_info.stdout'
      when: CONTAINER_RUNTIME == 'docker'
    
    - name: 创建{{ dns_backend }}部署
      shell: "{{ bin_dir }}/kubectl apply -f /opt/kube/kube-system/{{ dns_backend }}"
      run_once: true
      delegate_to: "{{ groups.deploy[0] }}"
  when: 
  - '"kube-dns" not in pod_info.stdout'
  - '"coredns" not in pod_info.stdout'
  - 'dns_install == "yes"'
  ignore_errors: true

- block:
    - block:
        - name: 尝试推送离线 metrics-server镜像（若执行失败，可忽略）
          copy: src={{ base_dir }}/down/{{ metricsserver_offline }} dest=/opt/kube/images/{{ metricsserver_offline }}
          when: 'metricsserver_offline in download_info.stdout'
        
        - name: 获取metrics-server离线镜像推送情况
          command: "ls /opt/kube/images"
          register: image_info     
     
        - name: 导入 metrics-server的离线镜像（若执行失败，可忽略）
          shell: "{{ bin_dir }}/docker load -i /opt/kube/images/{{ metricsserver_offline }}"
          when: 'metricsserver_offline in image_info.stdout'
      when: CONTAINER_RUNTIME == 'docker'
    
    - name: 创建 metrics-server部署
      shell: "{{ bin_dir }}/kubectl apply -f {{ base_dir }}/manifests/metrics-server"
      delegate_to: "{{ groups.deploy[0] }}"
      run_once: true
  when: '"metrics-server" not in pod_info.stdout and metricsserver_install == "yes"'
  ignore_errors: true

# 现阶段 dashboard 获取metrics仍旧依赖于heapster，因此需连带安装heapster
- block:
    - block:
        - name: 尝试推送离线 dashboard镜像（若执行失败，可忽略）
          copy: src={{ base_dir }}/down/{{ dashboard_offline }} dest=/opt/kube/images/{{ dashboard_offline }}
          when: 'dashboard_offline in download_info.stdout'
        
        - name: 获取dashboard离线镜像推送情况
          command: "ls /opt/kube/images"
          register: image_info     
          
        - name: 导入 dashboard的离线镜像（若执行失败，可忽略）
          shell: "{{ bin_dir }}/docker load -i /opt/kube/images/{{ dashboard_offline }}"
          when: 'dashboard_offline in image_info.stdout'
      when: CONTAINER_RUNTIME == 'docker'
      
    - name: 创建 dashboard部署
      shell: "{{ bin_dir }}/kubectl apply -f {{ base_dir }}/manifests/dashboard && \
	      {{ bin_dir }}/kubectl apply -f {{ base_dir }}/manifests/heapster/heapster-only"
      delegate_to: "{{ groups.deploy[0] }}"
      run_once: true
  when: '"kubernetes-dashboard" not in pod_info.stdout and dashboard_install == "yes"'
  ignore_errors: true

- import_tasks: ingress.yml
  when: '"ingress-controller" not in pod_info.stdout and ingress_install == "yes"'

- block:
    - block:
        - name: 尝试推送离线 heapster镜像（若执行失败，可忽略）
          copy: src={{ base_dir }}/down/{{ heapster_offline }} dest=/opt/kube/images/{{ heapster_offline }}
          when: 'heapster_offline in download_info.stdout'
        
        - name: 获取heapster离线镜像推送情况
          command: "ls /opt/kube/images"
          register: image_info     
          
        - name: 导入 heapster的离线镜像（若执行失败，可忽略）
          shell: "{{ bin_dir }}/docker load -i /opt/kube/images/{{ heapster_offline }}"
          when: 'heapster_offline in image_info.stdout'
      when: CONTAINER_RUNTIME == 'docker'
      
    - name: 创建 heapster部署
      shell: "{{ bin_dir }}/kubectl apply -f {{ base_dir }}/manifests/heapster/heapster.yaml"
      delegate_to: "{{ groups.deploy[0] }}"
      run_once: true
  when: '"heapster" not in pod_info.stdout and heapster_install == "yes"'
  ignore_errors: true

- block:
    - block:
        - name: 尝试推送离线 metallb镜像（若执行失败，可忽略）
          copy: src={{ base_dir }}/down/{{ metallb_offline }} dest=/opt/kube/images/{{ metallb_offline }}
          when: 'metallb_offline in download_info.stdout'
        
        - name: 获取metallb离线镜像推送情况
          command: "ls /opt/kube/images"
          register: image_info     
          
        - name: 导入 metallb的离线镜像（若执行失败，可忽略）
          shell: "{{ bin_dir }}/docker load -i /opt/kube/images/{{ metallb_offline }}"
          when: 'metallb_offline in image_info.stdout'
      when: CONTAINER_RUNTIME == 'docker'

    - name: 生成 metallb 相关 manifests
      template: src=metallb/{{ item }}.j2 dest=/opt/kube/kube-system/{{ item }}
      with_items:
      - "metallb.yaml"
      - "{{ metallb_protocol }}.yaml"
      delegate_to: "{{ groups.deploy[0] }}"
      run_once: true

    - name: 创建 metallb controller 部署
      shell: "{{ bin_dir }}/kubectl apply -f /opt/kube/kube-system/metallb.yaml"
      delegate_to: "{{ groups.deploy[0] }}"
      run_once: true

    - name: 创建 metallb configmap
      shell: "{{ bin_dir }}/kubectl apply -f /opt/kube/kube-system/{{ metallb_protocol }}.yaml"
      delegate_to: "{{ groups.deploy[0] }}"
      run_once: true
  when: '"metallb" not in pod_info.stdout and metallb_install == "yes"'
  ignore_errors: true