我使用“include”和“with_items”来循环任务块:
---
- name: main file
gather_facts: false
hosts: localhost
vars:
list1:
- { name: 'testuser1', groups: 'wheel', time: 10 }
- { name: 'testuser2', groups: 'root', time: 3 }
tasks:
- name: multiple tasks
include: multiple.yml item={{item}}
with_items: "{{ list1 }}"
multiple.yml 是:
---
- name: time before
shell: date +"%H:%M:%S"
- name: run
shell: sleep {{ item.time }}
- name: time after
shell: date +"%H:%M:%S"
任务进行得很好。但是,每个循环的 multiple.yml 都是串行执行的:
TASK [time before] ******************************************************************************************
changed: [localhost] => {"changed": true, "cmd": "date +\"%H:%M:%S\"", "delta": "0:00:00.013440", "end": "2018-11-25 15:56:04.595098", "rc": 0, "start": "2018-11-25 15:56:04.581658", "stderr": "", "stderr_lines": [], "stdout": "15:56:04", "stdout_lines": ["15:56:04"]}
TASK [run] ******************************************************************************************
changed: [localhost] => {"changed": true, "cmd": "sleep 10", "delta": "0:00:10.013043", "end": "2018-11-25 15:56:14.859720", "rc": 0, "start": "2018-11-25 15:56:04.846677", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
TASK [time after] *******************************************************************************************
changed: [localhost] => {"changed": true, "cmd": "date +\"%H:%M:%S\"", "delta": "0:00:00.012656", "end": "2018-11-25 15:56:15.153993", "rc": 0, "start": "2018-11-25 15:56:15.141337", "stderr": "", "stderr_lines": [], "stdout": "15:56:15", "stdout_lines": ["15:56:15"]}
TASK [time before] ******************************************************************************************
changed: [localhost] => {"changed": true, "cmd": "date +\"%H:%M:%S\"", "delta": "0:00:01.014217", "end": "2018-11-25 15:56:16.448480", "rc": 0, "start": "2018-11-25 15:56:15.434263", "stderr": "", "stderr_lines": [], "stdout": "15:56:15", "stdout_lines": ["15:56:15"]}
TASK [run] ******************************************************************************************
changed: [localhost] => {"changed": true, "cmd": "sleep 3", "delta": "0:00:03.012509", "end": "2018-11-25 15:56:19.711891", "rc": 0, "start": "2018-11-25 15:56:16.699382", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
TASK [time after] *******************************************************************************************
changed: [localhost] => {"changed": true, "cmd": "date +\"%H:%M:%S\"", "delta": "0:00:01.013766", "end": "2018-11-25 15:56:20.973979", "rc": 0, "start": "2018-11-25 15:56:19.960213", "stderr": "", "stderr_lines": [], "stdout": "15:56:19", "stdout_lines": ["15:56:19"]}
我想异步执行每个循环的 multiple.yml ,所以我尝试在主文件中使用 async 和 poll :
---
- name: main file
gather_facts: false
hosts: localhost
vars:
list1:
- { name: 'testuser1', groups: 'wheel', time: 10 }
- { name: 'testuser2', groups: 'root', time: 3 }
tasks:
- name: multiple tasks
include: multiple.yml item={{item}}
async: 20
poll: 0
with_items: "{{ list1 }}"
预期结果是:
TASK [time before] ******************************************************************************************
changed: [localhost] => {"changed": true, "cmd": "date +\"%H:%M:%S\"", "delta": "0:00:00.013440", "end": "2018-11-25 15:56:04.595098", "rc": 0, "start": "2018-11-25 15:56:04.581658", "stderr": "", "stderr_lines": [], "stdout": "15:56:04", "stdout_lines": ["15:56:04"]}
TASK [run] ******************************************************************************************
changed: [localhost] => {"changed": true, "cmd": "sleep 10", "delta": "0:00:10.013043", "end": "2018-11-25 15:56:14.859720", "rc": 0, "start": "2018-11-25 15:56:04.846677", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
TASK [time after] *******************************************************************************************
changed: [localhost] => {"changed": true, "cmd": "date +\"%H:%M:%S\"", "delta": "0:00:00.012656", "end": "2018-11-25 15:56:15.153993", "rc": 0, "start": "2018-11-25 15:56:15.141337", "stderr": "", "stderr_lines": [], "stdout": "15:56:15", "stdout_lines": ["15:56:15"]}
TASK [time before] ******************************************************************************************
changed: [localhost] => {"changed": true, "cmd": "date +\"%H:%M:%S\"", "delta": "0:00:01.014217", "end": "2018-11-25 15:56:16.448480", "rc": 0, "start": "2018-11-25 15:56:15.434263", "stderr": "", "stderr_lines": [], "stdout": "15:56:15", "stdout_lines": ["15:56:04"]}
TASK [run] ******************************************************************************************
changed: [localhost] => {"changed": true, "cmd": "sleep 3", "delta": "0:00:03.012509", "end": "2018-11-25 15:56:19.711891", "rc": 0, "start": "2018-11-25 15:56:16.699382", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
TASK [time after] *******************************************************************************************
changed: [localhost] => {"changed": true, "cmd": "date +\"%H:%M:%S\"", "delta": "0:00:01.013766", "end": "2018-11-25 15:56:20.973979", "rc": 0, "start": "2018-11-25 15:56:19.960213", "stderr": "", "stderr_lines": [], "stdout": "15:56:19", "stdout_lines": ["15:56:08"]}
但是运行new main.yml的结果和之前是一样的,并且两个循环的multiple.yml不是异步执行的。我不知道问题是什么。有什么建议吗?