kubeasz/roles/kube-master/tasks/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
  tags: upgrade_k8s

# 注册变量p，根据p的stat信息判断是否已经生成过kubernetes证书，如果没有，下一步生成证书
# 如果已经有证书，为了保证整个安装的幂等性，跳过证书生成的步骤
- name: 读取kubernetes证书stat信息
  stat: path="/etc/kubernetes/ssl/kubernetes.pem"
  register: p

- name: 创建 kubernetes 证书签名请求
  template: src=kubernetes-csr.json.j2 dest={{ ca_dir }}/kubernetes-csr.json
  when: p.stat.isreg is not defined

- name: 创建 kubernetes 证书和私钥
  when: p.stat.isreg is not defined
  shell: "cd {{ ca_dir }} && {{ bin_dir }}/cfssl gencert \
        -ca={{ ca_dir }}/ca.pem \
        -ca-key={{ ca_dir }}/ca-key.pem \
        -config={{ ca_dir }}/ca-config.json \
        -profile=kubernetes kubernetes-csr.json | {{ bin_dir }}/cfssljson -bare kubernetes"

- name: 创建 token.csv
  template: src=token.csv.j2 dest={{ ca_dir }}/token.csv

- name: 创建 basic-auth.csv
  template: src=basic-auth.csv.j2 dest={{ ca_dir }}/basic-auth.csv

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

# 为兼容之前的模式，需特别对v1.8版本重新配置kube-apiserver的systemd unit文件
- name: 创建kube-apiserver v1.8的systemd unit文件
  template: src=kube-apiserver-{{ K8S_VER }}.service.j2 dest=/etc/systemd/system/kube-apiserver.service
  tags: upgrade_k8s, restart_master
  when: "K8S_VER is defined and K8S_VER == 'v1.8'"

- name: 创建kube-controller-manager的systemd unit文件
  template: src=kube-controller-manager.service.j2 dest=/etc/systemd/system/kube-controller-manager.service
  tags: upgrade_k8s, restart_master

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

- 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

- name: 以轮询的方式等待master服务启动完成
  command: "{{ bin_dir }}/kubectl get node"
  register: result
  until:    result.rc == 0
  retries:  5
  delay: 6
  run_once: True
  tags: upgrade_k8s, restart_master