Ansible:在任务运行时跨多个主机累积输出 [英] Ansible: Accumulate output across multiple hosts on task run

问题描述

我有以下剧本

- hosts: all
  gather_facts: False
  tasks:
    - name: Check status of applications
      shell: somecommand
      register: result
      changed_when: False
      always_run: yes

在此任务之后，我想运行一个邮件任务，该任务将邮寄在变量 result 中注册的上述任务的所有命令的累积输出.截至目前，当我尝试这样做时，我会收到每个主机的邮件.有没有办法在多个主机上累积输出并将其注册到变量中?

After this task, I want to run a mail task that will mail the accumulated output of all the commands for the above task registered in the variable result. As of right now, when I try and do this, I get mailed for every single host. Is there some way to accumulate the output across multiple hosts and register that to a variable?

推荐答案

您可以从 run_once 任务中的 hostvars 提取结果:

You can extract result from hostvars inside a run_once task:

- hosts: mygroup
  gather_facts: false
  tasks:
    - shell: date
      register: date_res
      changed_when: false
    - debug:
        msg: "{{ ansible_play_hosts | map('extract', hostvars, 'date_res') | map(attribute='stdout') | list }}"
      run_once: yes

这将打印出当前播放中所有主机的所有 date_res.stdout 的列表，并且此任务仅运行一次.

This will print out a list of all date_res.stdout from all hosts in the current play and run this task only once.

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