ansible - 当只有一个主机满足条件时,为所有主机设置事实 [英] ansible - set fact for all hosts in play, when only one host has a met condition
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问题描述
使用 Ansible v2.9.12
Using Ansible v2.9.12
问题:当至少有一个主机满足特定条件时,我如何为游戏中的所有主机设置一个变量.
Question: How do I set a variable for all hosts in the play, when at least one host has a certain condition which is met.
示例:
- hosts:
- host1
- host2
- host3
- host4
tasks:
- stat:
path: /tmp/file
register: something
- set_fact
something: true
when: something <at least one of the hosts has /tmp/file>
现在,只有 host4 的文件系统中存在 /tmp/file
.在这种情况下,我将如何为所有主机设置事实?
Now, only host4 has /tmp/file
present in it's filesystem. How would I set the fact for all hosts in this case?
推荐答案
在 Vladimir Botka 的帮助下:
With help from Vladimir Botka:
---
- hosts:
- test-multi-03
- test-multi-02
- test-multi-01
tasks:
- name: stat file
stat:
path: /tmp/file
register: status
- block:
- name: create dictionary
set_fact:
status: "{{ dict(keys|zip(values)) }}"
vars:
keys: "{{ ansible_play_hosts }}"
values: "{{ ansible_play_hosts|
map('extract', hostvars, ['status','stat','exists'])
| list }}"
- name: set fact when file is present on at least one host, for all hosts
set_fact:
something: yeah
when: status.values() | list is any
run_once: true
- debug:
msg: "{{ something }}"
when: something is defined
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