在 Ansible 中检测并挂载文件系统

Question

我是 ansible 的新手，尝试检测文件系统并安装（如果存在）。我已浏览以下链接：-

1. https://docs.ansible.com/ansible/latest/modules/filesystem_module.html
2. https://docs.ansible.com/ansible/latest/modules/mount_module.html

我已手动连接硬盘驱动器，命令fdisk -l检测到该硬盘驱动器为“/dev/sdb”。我想要 ansible 代码来检测此文件系统并将其安装在某个位置。运行代码“ df -h ”时不会显示已安装的文件系统，也不会失败。即使我通过 ansible 代码列出所有文件系统或挂载点，该文件系统 (/dev/sdb) 也不会列出。

代码片段：

    - name: Create File System
      filesystem:
        fstype: ext4
        dev: "{{ mount_src }}"

    - name: Mount File System
      mount:
        path: "{{ mount_path }}"
        src: "{{ mount_src }}"
        fstype: ext4
        state: mounted

提前致谢，如有任何帮助，我们将不胜感激。

Answer 1

下面的例子创建了一个已安装设备的列表。如果未挂载mount_src ，则创建文件系统并将mount_src挂载到mount_path。

    - hosts: localhost
      vars:
        mount_src: /dev/sdb
        mount_path: /export
      tasks:
        - name: Create list of mounted devices
          set_fact:
            mounted_devices: "{{ ansible_mounts|json_query('[].device') }}"
        - name: Create File System
          filesystem:
            fstype: ext4
            dev: "{{ mount_src }}"
          when: mount_src not in mounted_devices
        - name: Mount File System
          mount:
            path: "{{ mount_path }}"
            src: "{{ mount_src }}"
            fstype: ext4
            state: mounted
          when: mount_src not in mounted_devices

^{（未测试）}

Ansible 不收集有关块设备的事实。在Linux中，可以使用命令lsblk代替，例如

    - hosts: localhost
      tasks:
        - name: Get list of block devices
          command: 'lsblk -lno NAME'
          register: results
        - name: Create variable block_devices
          set_fact:
            block_devices: "{{ results.stdout_lines }}"
        - debug:
            var: block_devices

给出

    ok: [127.0.0.1] => 
      block_devices:
      - sda
      - sda1
      - sda2
      - sda3
      - sda5
      - sdb
      - sdb1
      - sdb9
      - mmcblk0
      - mmcblk0p1