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

# 创建kubelet,kube-proxy工作目录和cni配置目录
- 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:
  - kubelet
  - kube-proxy
  - bridge
  - host-local
  - loopback
  tags: upgrade_k8s

##----------kubelet 配置部分--------------
# kubelet 启动时向 kube-apiserver 发送 TLS bootstrapping 请求，需要绑定该角色
# 只需单节点执行一次
- name: get clusterrolebinding info
  shell: "{{ bin_dir }}/kubectl get clusterrolebinding --all-namespaces"
  register: clusterrolebinding_info
  run_once: true
  
- name: kubelet-bootstrap-setting
  shell: "{{ bin_dir }}/kubectl create clusterrolebinding kubelet-bootstrap \
        --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap"
  run_once: True
  when: '"kubelet-bootstrap" not in clusterrolebinding_info.stdout'

- name: 安装bootstrap.kubeconfig配置文件
  synchronize: src=/etc/kubernetes/bootstrap.kubeconfig dest=/etc/kubernetes/bootstrap.kubeconfig
  delegate_to: "{{ groups.deploy[0] }}"

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

- 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: 安装kube-proxy.kubeconfig配置文件
  synchronize: src=/etc/kubernetes/kube-proxy.kubeconfig dest=/etc/kubernetes/kube-proxy.kubeconfig
  delegate_to: "{{ groups.deploy[0] }}"

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

- 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

# 批准 node 节点，首先轮询等待kubelet启动完成
- name: 轮询等待kubelet启动
  shell: "systemctl status kubelet.service|grep Active"
  register: kubelet_status
  until: '"running" in kubelet_status.stdout'
  retries: 8
  delay: 2

- name: 获取csr 请求信息
  shell: "sleep 3 && {{ bin_dir }}/kubectl get csr"
  register: csr_info
  run_once: true

- name: approve-kubelet-csr
  shell: "{{ bin_dir }}/kubectl get csr|grep 'Pending' | awk 'NR>0{print $1}'| \
        xargs {{ bin_dir }}/kubectl certificate approve"
  when: '"Pending" in csr_info.stdout'
  run_once: true

- 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