main.yml

- name: 下载etcd二进制文件
  copy: src={{ base_dir }}/bin/{{ item }} dest={{ bin_dir }}/{{ item }} mode=0755
  with_items:
  - etcd
  - etcdctl

# 注册变量result，根据result结果判断是否已经生成过etcd证书
# result|failed 说明没有生成过证书，下一步生成证书
# result|succeeded 说明已经有etcd证书，使用原证书可以保证api-server和calico/node等对etcd集群
# 的访问不受影响，因此跳过证书生成的步骤
- name: 注册变量result
  command: ls /etc/etcd/ssl/etcd.pem
  register: result
  ignore_errors: True

- name: 创建etcd证书目录
  file: name=/etc/etcd/ssl state=directory
  when: result|failed

- name: 创建etcd证书请求
  template: src=etcd-csr.json.j2 dest=/etc/etcd/ssl/etcd-csr.json
  when: result|failed

- name: 创建 etcd证书和私钥
  shell: "cd /etc/etcd/ssl && {{ bin_dir }}/cfssl gencert \
        -ca={{ ca_dir }}/ca.pem \
        -ca-key={{ ca_dir }}/ca-key.pem \
        -config={{ ca_dir }}/ca-config.json \
        -profile=kubernetes etcd-csr.json | {{ bin_dir }}/cfssljson -bare etcd"
  when: result|failed

- name: 创建etcd工作目录
  file: name=/var/lib/etcd state=directory

- name: 创建etcd的systemd unit文件
  template: src=etcd.service.j2 dest=/etc/systemd/system/etcd.service

- name: 开启etcd服务
  shell: systemctl daemon-reload && systemctl enable etcd && systemctl restart etcd