main.yml

- name: 下载 kube_master 二进制
  copy: src={{ base_dir }}/bin/{{ item }} dest={{ bin_dir }}/{{ item }} mode=0755
  with_items:
  - kube-apiserver
  - kube-controller-manager
  - kube-scheduler
  - kubectl
  tags: upgrade_k8s

- name: 分发controller/scheduler kubeconfig配置文件
  copy: src={{ cluster_dir }}/{{ item }} dest=/etc/kubernetes/{{ item }}
  with_items:
  - kube-controller-manager.kubeconfig
  - kube-scheduler.kubeconfig
  tags: force_change_certs 

- name: 创建 kubernetes 证书签名请求
  template: src=kubernetes-csr.json.j2 dest={{ cluster_dir }}/ssl/kubernetes-csr.json
  tags: change_cert, force_change_certs
  connection: local

- name: 创建 kubernetes 证书和私钥
  shell: "cd {{ cluster_dir }}/ssl && {{ base_dir }}/bin/cfssl gencert \
        -ca=ca.pem \
        -ca-key=ca-key.pem \
        -config=ca-config.json \
        -profile=kubernetes kubernetes-csr.json | {{ base_dir }}/bin/cfssljson -bare kubernetes"
  tags: change_cert, force_change_certs
  connection: local

# 创建aggregator proxy相关证书
- name: 创建 aggregator proxy证书签名请求
  template: src=aggregator-proxy-csr.json.j2 dest={{ cluster_dir }}/ssl/aggregator-proxy-csr.json
  connection: local
  tags: force_change_certs 

- name: 创建 aggregator-proxy证书和私钥
  shell: "cd {{ cluster_dir }}/ssl && {{ base_dir }}/bin/cfssl gencert \
        -ca=ca.pem \
        -ca-key=ca-key.pem \
        -config=ca-config.json \
        -profile=kubernetes aggregator-proxy-csr.json | {{ base_dir }}/bin/cfssljson -bare aggregator-proxy"
  connection: local
  tags: force_change_certs 

- name: 分发 kubernetes证书
  copy: src={{ cluster_dir }}/ssl/{{ item }} dest={{ ca_dir }}/{{ item }}
  with_items:
  - ca.pem
  - ca-key.pem
  - kubernetes.pem
  - kubernetes-key.pem
  - aggregator-proxy.pem
  - aggregator-proxy-key.pem
  tags: change_cert, force_change_certs

- name: 替换 kubeconfig 的 apiserver 地址
  lineinfile:
    dest: "{{ item }}"
    regexp: "^    server"
    line: "    server: https://127.0.0.1:{{ SECURE_PORT }}"
  with_items:
  - "/etc/kubernetes/kube-controller-manager.kubeconfig"
  - "/etc/kubernetes/kube-scheduler.kubeconfig"
  tags: force_change_certs 

- name: 创建 master 服务的 systemd unit 文件
  template: src={{ item }}.j2 dest=/etc/systemd/system/{{ item }}
  with_items:
  - kube-apiserver.service
  - kube-controller-manager.service
  - kube-scheduler.service
  tags: restart_master, upgrade_k8s

- name: enable master 服务
  shell: systemctl enable kube-apiserver kube-controller-manager kube-scheduler
  ignore_errors: true

- name: 启动 master 服务
  shell: "systemctl daemon-reload && systemctl restart kube-apiserver && \
	systemctl restart kube-controller-manager && systemctl restart kube-scheduler"
  tags: upgrade_k8s, restart_master, force_change_certs

# 轮询等待kube-apiserver启动完成
- name: 轮询等待kube-apiserver启动
  shell: "systemctl is-active kube-apiserver.service"
  register: api_status
  until: '"active" in api_status.stdout'
  retries: 10
  delay: 3
  tags: upgrade_k8s, restart_master, force_change_certs

# 轮询等待kube-controller-manager启动完成
- name: 轮询等待kube-controller-manager启动
  shell: "systemctl is-active kube-controller-manager.service"
  register: cm_status
  until: '"active" in cm_status.stdout'
  retries: 8
  delay: 3
  tags: upgrade_k8s, restart_master, force_change_certs

# 轮询等待kube-scheduler启动完成
- name: 轮询等待kube-scheduler启动
  shell: "systemctl is-active kube-scheduler.service"
  register: sch_status
  until: '"active" in sch_status.stdout'
  retries: 8
  delay: 3
  tags: upgrade_k8s, restart_master, force_change_certs

- block:
    - name: 复制kubectl.kubeconfig
      shell: 'cd {{ cluster_dir }} && cp -f kubectl.kubeconfig {{ K8S_NODENAME }}-kubectl.kubeconfig'
      tags: upgrade_k8s, restart_master, force_change_certs

    - name: 替换 kubeconfig 的 apiserver 地址
      lineinfile:
        dest: "{{ cluster_dir }}/{{ K8S_NODENAME }}-kubectl.kubeconfig"
        regexp: "^    server"
        line: "    server: https://{{ inventory_hostname }}:{{ SECURE_PORT }}"
      tags: upgrade_k8s, restart_master, force_change_certs

    - name: 轮询等待master服务启动完成
      command: "{{ base_dir }}/bin/kubectl --kubeconfig={{ cluster_dir }}/{{ K8S_NODENAME }}-kubectl.kubeconfig get node"
      register: result
      until:    result.rc == 0
      retries:  5
      delay: 6
      tags: upgrade_k8s, restart_master, force_change_certs

    - name: 获取user:kubernetes是否已经绑定对应角色
      shell: "{{ base_dir }}/bin/kubectl get clusterrolebindings|grep kubernetes-crb || echo 'notfound'"
      register: crb_info
      run_once: true

    - name: 创建user:kubernetes角色绑定
      command: "{{ base_dir }}/bin/kubectl create clusterrolebinding kubernetes-crb --clusterrole=system:kubelet-api-admin --user=kubernetes"
      run_once: true
      when: "'notfound' in crb_info.stdout"
  connection: local