linux - 如何使用 Ansible-playbook 在磁盘的 `/etc/fstab` 中追加条目？

Question

我正在使用下面的剧本将条目写入/etc/fstab。并创建交换文件:

---

- name: Configure SWAP
  hosts: localhost
  become: yes
  become_user: root

  tasks:
    - name: Configuring a SWAP
      command: "{{ item }}"
      loop:
        - mkswap -f "{{ ebs_swap }}"
        - echo "UUID=$(blkid -s UUID -o value {{ ebs_swap }})   swap    swap   defaults  0   0" | sudo tee -a /etc/fstab
        - swapon -a
      register: output

    - name: Display the variable
      debug:
       msg: "{{ output}}"

我们使用命令运行它:ansible-playbook mount.yml -e "ebs_swap=/dev/xvdj"

操作:

                "item": "echo \"UUID=$(blkid -s UUID -o value /dev/xvdj)   swap    swap   defaults  0   0\" | sudo tee -a /etc/fstab",
                "rc": 0,
                "start": "2020-04-09 14:51:23.890047",
                "stderr": "",
                "stderr_lines": [],
                "stdout": "UUID=$(blkid -s UUID -o value /dev/xvdj)   swap    swap   defaults  0   0 | sudo tee -a /etc/fstab",
                "stdout_lines": [
                    "UUID=$(blkid -s UUID -o value /dev/xvdj)   swap    swap   defaults  0   0 | sudo tee -a /etc/fstab"

谁能告诉我为什么我无法在 /etc/fstab 中获取条目并且当我尝试运行上述命令时它会成功。

Answer 1

我已经通过使用以下方法解决了这个问题:

- name: Dispaly uuid & store in variable
  command: blkid -s UUID -o value {{ ebs_swap }}
  register: uuid_swap

- name: Add the below lines
  blockinfile:
    path: /etc/fstab
    state: present
    block: |
      UUID={{ uuid_swap.stdout }}   swap      swap defaults                         0   0