kubeasz/roles/docker/tasks/main.yml

- name: 准备docker相关目录
  file: name={{ item }} state=directory
  with_items:
  - "{{ bin_dir }}"
  - /etc/docker

# 18.09.x 版本二进制名字有变化，需要做判断
- name: 获取docker版本信息
  shell: "{{ base_dir }}/bin/dockerd --version"
  register: docker_ver
  connection: local
  run_once: true

- name: 下载 docker 二进制文件
  copy: src={{ base_dir }}/bin/{{ item }} dest={{ bin_dir }}/{{ item }} mode=0755
  with_items:
  - docker-containerd
  - docker-containerd-shim
  - docker-init
  - docker-runc
  - docker
  - docker-containerd-ctr
  - dockerd
  - docker-proxy
  tags: upgrade_docker, download_docker
  when: "'version 18.09' not in docker_ver.stdout"

- name: 下载 docker 二进制文件(>= 18.09.x)
  copy: src={{ base_dir }}/bin/{{ item }} dest={{ bin_dir }}/{{ item }} mode=0755
  with_items:
  - containerd
  - containerd-shim
  - docker-init
  - runc
  - docker
  - ctr
  - dockerd
  - docker-proxy
  tags: upgrade_docker, download_docker
  when: "'version 18.09' in docker_ver.stdout"

- name: docker命令自动补全
  copy: src=docker dest=/etc/bash_completion.d/docker mode=0644

- name: docker国内镜像加速
  template: src=daemon.json.j2 dest=/etc/docker/daemon.json

- name: flush-iptables
  shell: "iptables -P INPUT ACCEPT \
        && iptables -F && iptables -X \
        && iptables -F -t nat && iptables -X -t nat \
        && iptables -F -t raw && iptables -X -t raw \
        && iptables -F -t mangle && iptables -X -t mangle"

- name: 创建docker的systemd unit文件
  template: src=docker.service.j2 dest=/etc/systemd/system/docker.service
  tags: upgrade_docker, download_docker

- name: 开机启用docker 服务
  shell: systemctl enable docker
  ignore_errors: true

- name: 开启docker 服务
  shell: systemctl daemon-reload && systemctl restart docker
  tags: upgrade_docker

## 可选 ------安装docker查询镜像 tag的小工具----
# 先要安装轻量JSON处理程序‘jq’，已在 prepare 节点安装
- name: 下载 docker-tag
  copy: src=docker-tag dest={{ bin_dir }}/docker-tag mode=0755

- name: 轮询等待docker服务运行
  shell: "systemctl status docker.service|grep Active"
  register: docker_status
  until: '"running" in docker_status.stdout'
  retries: 8
  delay: 2
  tags: upgrade_docker