ansible安装docker

以下是使用Ansible安装Docker的步骤：

1.确保已经安装了Ansible软件，并且已经设置好了主机名为ansible。

2.创建一个名为docker_install.yml的Ansible Playbook文件，并在其中添加以下内容：

---
- name: Install Docker
 hosts: docker2
  become: true
  tasks:
    - name: Install required packages
      yum:
        name:
          - yum-utils
          - device-mapper-persistent-data
          - lvm2
        state: present

    - name: Add Docker repository
      yum_repository:
        name: docker-ce
        baseurl: https://download.docker.com/linux/centos/7/x86_64/stable/
        description: Docker CE Stable - $basearch
        gpgcheck: yes
        gpgkey: https://download.docker.com/linux/centos/gpg
        enabled: yes

    - name: Install Docker CE
      yum:
        name: docker-ce
        state: present

    - name: Start Docker service
      service:
        name: docker
        state: started

3.在终端中运行以下命令来执行Ansible Playbook文件：

ansible-playbook docker_install.yml

4.等待执行完成后，Docker就已经成功安装在被控制的主机上了。