kubeasz/roles/kube-node/tasks/main.yml

- name: 创建kube_node 相关目录
  file: name={{ item }} state=directory
  with_items:
  - /var/lib/kubelet
  - /var/lib/kube-proxy
  - /etc/cni/net.d

- name: 下载 kubelet,kube-proxy 二进制和基础 cni plugins
  copy: src={{ base_dir }}/bin/{{ item }} dest={{ bin_dir }}/{{ item }} mode=0755
  with_items:
  - kubectl
  - kubelet
  - kube-proxy
  - bridge
  - host-local
  - loopback
  tags: upgrade_k8s

- name: 替换 kubeconfig 的 apiserver 地址
  lineinfile:
    dest: /root/.kube/config
    regexp: "^    server"
    line: "    server: {{ KUBE_APISERVER }}"

##----------kubelet 配置部分--------------
# 创建 kubelet 相关证书及 kubelet.kubeconfig
- import_tasks: create-kubelet-kubeconfig.yml

- name: 准备 cni配置文件
  template: src=cni-default.conf.j2 dest=/etc/cni/net.d/10-default.conf

- name: 注册变量 DNS_SVC_IP
  shell: echo {{ SERVICE_CIDR }}|cut -d/ -f1|awk -F. '{print $1"."$2"."$3"."$4+2}'
  register: DNS_SVC_IP

- name: 设置变量 CLUSTER_DNS_SVC_IP
  set_fact: CLUSTER_DNS_SVC_IP={{ DNS_SVC_IP.stdout }}

- block:
  - name: 获取docker版本信息
    shell: "{{ base_dir }}/bin/dockerd --version|cut -d' ' -f3"
    register: docker_ver

  - name: 转换docker版本信息为浮点数
    set_fact:
      DOCKER_VER: "{{ docker_ver.stdout.split('.')[0]|int + docker_ver.stdout.split('.')[1]|int/100 }}"
  connection: local
  run_once: true
  tags: upgrade_k8s, restart_node
  when: "CONTAINER_RUNTIME == 'docker'"

- name: 创建kubelet的配置文件
  template: src=kubelet-config.yaml.j2 dest=/var/lib/kubelet/config.yaml
  tags: upgrade_k8s, restart_node

- name: 创建kubelet的systemd unit文件
  template: src=kubelet.service.j2 dest=/etc/systemd/system/kubelet.service
  tags: upgrade_k8s, restart_node

- name: 开机启用kubelet 服务
  shell: systemctl enable kubelet
  ignore_errors: true

- name: 开启kubelet 服务
  shell: systemctl daemon-reload && systemctl restart kubelet
  tags: upgrade_k8s, restart_node

##-------kube-proxy部分----------------
- name: 替换 kube-proxy.kubeconfig 的 apiserver 地址
  lineinfile:
    dest: /etc/kubernetes/kube-proxy.kubeconfig
    regexp: "^    server"
    line: "    server: {{ KUBE_APISERVER }}"

- name: 创建kube-proxy 配置
  template: src=kube-proxy-config.yaml.j2 dest=/var/lib/kube-proxy/kube-proxy-config.yaml
  tags: reload-kube-proxy, restart_node, upgrade_k8s

- name: 创建kube-proxy 服务文件
  template: src=kube-proxy.service.j2 dest=/etc/systemd/system/kube-proxy.service
  tags: reload-kube-proxy, restart_node, upgrade_k8s

- name: 开机启用kube-proxy 服务
  shell: systemctl enable kube-proxy
  ignore_errors: true

- name: 开启kube-proxy 服务
  shell: systemctl daemon-reload && systemctl restart kube-proxy
  tags: reload-kube-proxy, upgrade_k8s, restart_node

# 轮询等待kube-proxy启动完成
- name: 轮询等待kube-proxy启动
  shell: "systemctl is-active kube-proxy.service"
  register: kubeproxy_status
  until: '"active" in kubeproxy_status.stdout'
  retries: 4
  delay: 2
  tags: reload-kube-proxy, upgrade_k8s, restart_node

# 轮询等待kubelet启动完成
- name: 轮询等待kubelet启动
  shell: "systemctl is-active kubelet.service"
  register: kubelet_status
  until: '"active" in kubelet_status.stdout'
  retries: 4
  delay: 2
  tags: reload-kube-proxy, upgrade_k8s, restart_node

- name: 轮询等待node达到Ready状态
  shell: "{{ bin_dir }}/kubectl get node {{ inventory_hostname }}|awk 'NR>1{print $2}'"
  register: node_status
  until: node_status.stdout == "Ready" or node_status.stdout == "Ready,SchedulingDisabled"
  retries: 8 
  delay: 8
  tags: upgrade_k8s, restart_node

- name: 设置node节点role
  shell: "{{ bin_dir }}/kubectl label node {{ inventory_hostname }} kubernetes.io/role=node --overwrite"
  ignore_errors: true

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

    - name: 尝试推送离线dnscache镜像（若执行失败，可忽略）
      copy: src={{ base_dir }}/down/{{ dnscache_offline }} dest=/opt/kube/images/{{ dnscache_offline }}
      when: 'dnscache_offline in download_info.stdout'

    - name: 获取dnscache离线镜像推送情况
      command: "ls /opt/kube/images"
      register: image_info

    - name: 导入dnscache的离线镜像（若执行失败，可忽略）
      shell: "{{ bin_dir }}/docker load -i /opt/kube/images/{{ dnscache_offline }}"
      when: 'dnscache_offline in image_info.stdout and CONTAINER_RUNTIME == "docker"'

    - name: 导入dnscache的离线镜像（若执行失败，可忽略）
      shell: "{{ bin_dir }}/ctr -n=k8s.io images import /opt/kube/images/{{ dnscache_offline }}"
      when: 'dnscache_offline in image_info.stdout and CONTAINER_RUNTIME == "containerd"'
  when: "ENABLE_LOCAL_DNS_CACHE|bool"