ansible - 如何在ansible中控制救援模块的执行

Question

我有一个像下面这样的剧本，我想在 block 出错时控制救援的执行。
我加 when: is_debug is defined救援后，但是当我运行 ansible-playbook dashboard.yml ，不给is_debug值，当block有错误时救援仍然执行。

我想知道如何控制 ansible 中救援模块的执行？

[root@ansiable-test update]# cat dashboard.yml
---
- hosts: controller
  vars_files:
        - "vars/vars.yml"
  tasks:
    - name: update horizon
    - block:
        - include: "roles/dashboard/tasks/update-horizon.yml"
      rescue:
      when: is_debug is defined
        - debug: msg='An error occurred during the upgrade,roll back to the old version'
        - include: "roles/dashboard/tasks/rollback.yml"

Answer 1

没有rescue “模块”。它是 block 的一部分语法，并且不能应用 when到rescue部分。您可以申请when rescue 中的任务(或任务)的条件节:

- hosts: controller
  vars_files:
        - "vars/vars.yml"
  tasks:
    - name: update horizon
    - block:
        - include: "roles/dashboard/tasks/update-horizon.yml"
      rescue:
        - debug: msg='An error occurred during the upgrade,roll back to the old version'
          when: is_debug is defined

        - include: "roles/dashboard/tasks/rollback.yml"
          when: is_debug is defined