是否可以在Ansible Playbook中操纵日期 [英] Is it possible to manipulate the date in an Ansible Playbook

问题描述

我在其中一本剧本中使用ansible_date_time.hour和ansible_date_time.minute.

Am using the ansible_date_time.hour and ansible_date_time.minute in one of my playbooks.

但是我需要在这些事实上增加时间(或在变量中)..例如，如果ansible_date_time.hour返回16-我想增加几个小时，或者如果ansible_date_time.minute返回40-我希望它是50 ..

But I need to add time on to these facts (or in a variable).. i.e. if ansible_date_time.hour returns 16 - I want to add a couple of hours, or if ansible_date_time.minute returns 40 - I want it to be 50..

当然，小时和分钟的上限是23和59 ...正如我所想到的，要从以下位置注册变量:

Of course there is a ceiling of 23 and 59 for the hours and mins... as I thought about registering a variable from:

- name: Register HH  
  shell: date '+%H'
  register: HP_HH
- debug: msg="{{ HP_HH.stdout | int + 3 }}"

但是很明显，如果我的剧本在21:00之后上映，那我就不走运了.

But obviously if my playbook runs at after 21:00 I am out of luck.

有人有建议或解决方法吗?

Does anyone have a suggestion or workaround?

推荐答案

AFAIK，无法在Ansible中直接添加/减去时间单位.

AFAIK, there is no way to add/subtract time units out of the box in Ansible.

您可以使用to_datetime过滤器(Ansible 2.2+)将字符串转换为datetime对象.
您可以计算日期差.请参阅此答案.

You can convert strings to datetime object with to_datetime filter (Ansible 2.2+).
You can calculate date difference. See this answer.

但是，如果您不介意使用简单的过滤器插件，请按以下步骤操作:

But if you don't mind using a simple filter plugin, here you go:

将此代码作为./filter_plugins/add_time.py拖放到您的剧本附近:

Drop this code as ./filter_plugins/add_time.py near your playbook:

import datetime

def add_time(dt, **kwargs):
    return dt + datetime.timedelta(**kwargs)

class FilterModule(object):

    def filters(self):
        return {
            'add_time': add_time
        }

您可以使用自己的add_time过滤器，如下所示:

And you can use your own add_time filter as follows:

- hosts: localhost
  gather_facts: yes
  tasks:
    - debug:
        msg: "Current datetime is {{ ansible_date_time.iso8601 }}"
    - debug:
        msg: "Current time +20 mins {{ ansible_date_time.iso8601[:19] | to_datetime(fmt) | add_time(minutes=20) }}"
      vars:
        fmt: "%Y-%m-%dT%H:%M:%S"

add_time与Python中的 timedelta 具有相同的参数

add_time has same parameters as timedelta in Python.

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