Question

我用《隐形》来读一个值并分析它

<强 > 价值

link: hdfs:///test/test2

<% 1> 输出应为 :

/test/test2

<强>/强> 无效的天体:

   - set_fact:
        my_var: "{{ link | regex_search( hdfs:// ) }}"
     delegate_to: localhost

Answer 1

有更多的选项 :

Use the filter regex_replace

    - set_fact:
        my_var: "{{ link | regex_replace(_regex, _replace) }}"
      vars:
        _regex:  ^(.*)/(.*)/(.*)$ 
        _replace:  /2/3

给您想要的

  my_var: /test/test2

Simple split&join works too. The below expression gives the same result

  my_var: "/{{ link.split( / )[-2:] | join( / ) }}"

But, the simplest option is the filter urlsplit

  my_var: "{{ link | urlsplit( path ) }}"

^{用于测试的完整书本实例
- hosts: localhost

vars:

link: hdfs:///test/test2

_regex: ^(.*)/(.*)/(.*)$
_replace: /2/3
my_var1: "{{ link | regex_replace(_regex, _replace) }}"
my_var2: "/{{ link.split( / )[-2:] | join( / ) }}"
my_var3: "{{ link | urlsplit( path ) }}"

tasks:

- debug:
var: my_var1
- debug:
var: my_var2
- debug:
var: my_var3

- set_fact:
my_var: "{{ link | regex_replace(_regex, _replace) }}"
vars:
_regex: ^(.*)/(.*)/(.*)$
_replace: /2/3
- debug:
var: my_var}

Answer 2

你可以尝试一些类似的东西如下

basevariable should be set to hdfs:///test/test2

- name: regex replace
  set_fact:
    final_var: "{{  basevariable | regex_replace(reg_search, reg_replace)  }}"
  tags:
    - reg-replace

https://docs.ansible.com/ansible/latist/ recallings/ansible/内建/replace_module.html' rel=“不跟随 noreferrer'>更多信息

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