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

- name: 设置变量 CLUSTER_KUBERNETES_SVC_IP
  set_fact: CLUSTER_KUBERNETES_SVC_IP={{ KUBERNETES_SVC_IP.stdout }}
  tags: change_cert

- 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
  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
  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

- 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

- 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

- name: 替换 kubeconfig 的 apiserver 地址
  lineinfile:
    dest: "{{ item }}"
    regexp: "^    server"
    line: "    server: https://{{ inventory_hostname }}:6443"
  with_items:
  - "/root/.kube/config"
  - "/etc/kubernetes/kube-controller-manager.kubeconfig"
  - "/etc/kubernetes/kube-scheduler.kubeconfig"
  tags: upgrade_k8s, restart_master

- name: 创建 kube-scheduler 配置文件
  template: src=kube-scheduler-config.yaml.j2 dest=/etc/kubernetes/kube-scheduler-config.yaml
  tags: restart_master, upgrade_k8s

- 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

# 轮询等待kube-apiserver启动完成
- name: 轮询等待kube-apiserver启动
  shell: "systemctl status kube-apiserver.service|grep Active"
  register: api_status
  until: '"running" in api_status.stdout'
  retries: 10
  delay: 3
  tags: upgrade_k8s, restart_master

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

# 轮询等待kube-scheduler启动完成
- name: 轮询等待kube-scheduler启动
  shell: "systemctl status kube-scheduler.service|grep Active"
  register: sch_status
  until: '"running" in sch_status.stdout'
  retries: 8
  delay: 3
  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
  tags: upgrade_k8s, restart_master

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

- name: 创建user:kubernetes角色绑定
  command: "{{ bin_dir }}/kubectl create clusterrolebinding kubernetes-crb --clusterrole=cluster-admin --user=kubernetes"
  run_once: true
  when: "'notfound' in crb_info.stdout"