Question

我是Ansible AWX新手。我正在尝试在剧本的两个任务之间传递变量。该剧本看起来像这样：

---
- name: start
  hosts: all
  gather_facts: no

  tasks:

  - name: Check Debian disk space
    command: df --output=avail {{ a7_pcap_data_path }}
    become: true
    become_method: sudo
    register: df_output

  - name: Show Debian free space
    vars:
      a7_free_space_mb: "{{ (df_output.stdout_lines[1]|int / 1024)|round(0,'floor') }}"
      a7_spare_space_mb: "{{ a7_free_space_mb|int - (a7_capture_volume_mb|int * 1.1) }}" # Allow 10% for safety
    debug:
      msg: "Spare space: {{ a7_spare_space_mb }} MB"

  - name: Pass/fail check
    debug:
      msg: "Spare space: {{ a7_spare_space_mb }} MB"

a7_pcap_data_path和a7_capture_volume_mb作为AWX变量传递。当我从AWX中的“作业模板”运行此文件时，我得到了：

Identity added: /tmp/awx_57_PesTa2/credential_3 (/tmp/awx_57_PesTa2/credential_3)
SSH password: 

PLAY [start] *******************************************************************

TASK [Check Debian disk space] *************************************************
changed: [ip-172-31-14-43.eu-west-1.compute.internal]

TASK [Show Debian free space] **************************************************

ok: [ip-172-31-14-43.eu-west-1.compute.internal] => {
    "msg": "Spare space: 3020.0 MB"
}

TASK [Pass/fail check] *********************************************************
fatal: [ip-172-31-14-43.eu-west-1.compute.internal]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'a7_spare_space_mb' is undefined\n\nThe error appears to have been in '/var/lib/awx/projects/pre_checks/test.yml': line 21, column 5, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n  - name: Pass/fail check\n    ^ here\n"}

PLAY RECAP *********************************************************************
ip-172-31-14-43.eu-west-1.compute.internal : ok=2    changed=1    unreachable=0    failed=1
The variable a7_spare_space_mb obviously is available in the task Show Debian free space but not in the subsequent task.

看来a7_spare_space_mb变量的作用域仅在定义它的任务内，但是据我所读，作用域应该是整个剧本。

我在做什么错了？

感谢和问候...保罗

Answer 1

一种选择是使用set_fact

- set_fact:
    a7_free_space_mb: "{{ (df_output.stdout_lines[1]|int / 1024)|round(0,'floor') }}"
    a7_spare_space_mb: "{{ a7_free_space_mb|int - (a7_capture_volume_mb|int * 1.1) }}" # Allow 10% for safety

- name: Show Debian free space
  debug:
    msg: "Spare space: {{ a7_spare_space_mb }} MB"

- name: Pass/fail check
  debug:
    msg: "Spare space: {{ a7_spare_space_mb }} MB"

Ansible Playbook-一次播放无法在任务之间传递变量

1 个答案: