类似于Linux的REGEX(regex_search)EGREP -使用一个with_items循环使用多模式/范围显示模式匹配行(带空格)

xghobddn 于 2023-10-22 发布在 Linux

关注(0)|答案(2)|浏览(138)

Ansible / Ansible-Playbook 2.9.27
我有下面的剧本，我想只显示那些行（来自数据结构（即，list -->with_items循环），这些循环匹配给定的multi“egrep”类模式（例如：“* 模式1| pattern2| pattern3withRange [0-9a-zA-Z]*”）。

我如何在Ansible中实现这一点，可能只使用一个with_items / loop？

这将是伟大的：

如果我不用N的话不。嵌套循环（每个模式/字符串）--或--
我不必使用shell一行代码（egrep“string|绝对值 *yz| giga”）。

以下是我的Playbook：aks.yml

---
- hosts: localhost
  become: yes
  remote_user: root
  become_user: root
  pre_tasks:
  - name: show pattern matching lines
    #command: 'echo {{ item }} | egrep -i "r[0-9]|goga"'
    ansible.builtin.debug:
      var: "{{ item }}"
    when: ( item | regex_search('r0[0-9]|goga', ignorecase=True))
    with_items:
      - "ar00n_giga"
      - "Schnooka_goga"
      - "lorito_r01_gigaFifa"

运行Playbook可以让我：

$ ansible-playbook aks.yml

[WARNING]: provided hosts list is empty, only localhost is available. Note that the implicit localhost does not match 'all'

PLAY [localhost] *************************************************************************************************************************************************************************************************

TASK [Gathering Facts] *******************************************************************************************************************************************************************************************
ok: [localhost]

TASK [show pattern matching lines] *******************************************************************************************************************************************************************************
ok: [localhost] => (item=ar00n_giga) => {
    "ansible_loop_var": "item", 
    "ar00n_giga": "VARIABLE IS NOT DEFINED!", 
    "item": "ar00n_giga"
}

skipping: [localhost] => (item=Schnooka_goga) 

ok: [localhost] => (item=lorito_r01_gigaFifa) => {
    "ansible_loop_var": "item", 
    "item": "lorito_r01_gigaFifa", 
    "lorito_r01_gigaFifa": "VARIABLE IS NOT DEFINED!"
}

PLAY RECAP *******************************************************************************************************************************************************************************************************
localhost                  : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

我注意到都“范围”[0-9]和多模式，即在regex_search(...)中使用|工作！

使用范围r0[0-9]可以成功捕获包含r 00和r 01的项字符串，这很棒。
使用...|goga（它也捕获第二行，它没有r0[0-9]模式。

但是如果我的值在with_items中有空格，上面的代码就不起作用了：循环，即如果我添加以下内容：

with_items:
  - "ar00n_giga"
  - "new goga shooga"
  - "Schnooka_goga"
  - "lorito_r01_gigaFifa"

然后，我得到以下错误消息：

...
TASK [show pattern matching lines] *******************************************************************************************************************************************************************************
ok: [localhost] => (item=ar00n_giga) => {
    "ansible_loop_var": "item", 
    "ar00n_giga": "VARIABLE IS NOT DEFINED!", 
    "item": "ar00n_giga"
}
fatal: [localhost]: FAILED! => {"msg": "template error while templating string: expected token 'end of print statement', got 'goga'. String: {{new goga shooga}}"}

PLAY RECAP *******************************************************************************************************************************************************************************************************
localhost                  : ok=1    changed=0    unreachable=0    failed=1    skipped=0    rescued=0    ignored=0

regex

来源：https://stackoverflow.com/questions/77228855/regex-regex-search-like-linux-egrep-show-pattern-matching-lines-with-spaces

2条答案

按热度按时间

jc3wubiy1#

它更容易搜索选定的列表。例如，给定列表

data_raw:
    - ar00n_giga
    - new goga shooga
    - Schnooka_goga
    - lorito_r01_gigaFifa

1.搜索模式r 0 [0-9]|戈加

data_sel: "{{ data_raw|
                select('search', 'r0[0-9]|goga', ignorecase=true) }}"

选择所有项目，因为：

搜索“r 0 [0-9]”选择第一个和最后一个项目，
搜索'goga'选择第二和第三项

data_sel:
  - ar00n_giga
  - new goga shooga
  - Schnooka_goga
  - lorito_r01_gigaFifa

1.改变第二模式'r 0 [0-9]|新'

data_sel: "{{ data_raw|
                select('search', 'r0[0-9]|new', ignorecase=true) }}"

第三项未选中

data_sel:
  - ar00n_giga
  - new goga shooga
  - lorito_r01_gigaFifa

用于测试的完整剧本示例

- hosts: localhost

  vars:

    data_raw:
      - ar00n_giga
      - new goga shooga
      - Schnooka_goga
      - lorito_r01_gigaFifa

    data_sel1: "{{ data_raw|
                   select('search', 'r0[0-9]|goga', ignorecase=true) }}"
    data_sel2: "{{ data_raw|
                   select('search', 'r0[0-9]|new', ignorecase=true) }}"
                
  tasks:

    - debug:
        var: data_sel1
    - debug:
        var: data_sel2

赞(0）回复(0）举报 2023-10-22

up9lanfz2#

从红帽分销渠道了解带Ansible的RHEL 7.9

ansible --version
ansible 2.9.27
...
  ansible python module location = /usr/lib/python2.7/site-packages/ansible
  executable location = /usr/bin/ansible
  python version = 2.7.5 (default, May 30 2023, 03:38:55) [GCC 4.8.5 20150623 (Red Hat 4.8.5-44)]

一个最小的示例剧本

---
- hosts: localhost
  become: false
  gather_facts: false

  vars:

    ITEMS:
      - "ar00n_giga"
      - "new goga shooga"
      - "Schnooka_goga"
      - "lorito_r01_gigaFifa"

  tasks:

  - name: Show pattern matching lines
    debug:
      msg: "{{ item }}"
    when: ( item | regex_search('r0[0-9]|goga', ignorecase=True))
    loop: "{{ ITEMS }}"

  - name: Show pattern matching lines
    debug:
      var: item
    when: ( item | regex_search('r0[0-9]|goga', ignorecase=True))
    loop: "{{ ITEMS }}"

  - name: Show pattern matching lines
    debug:
      var: item
    when: ( item | regex_search('r0[0-9]|goga', ignorecase=True))
    with_items:
      - "ar00n_giga"
      - "new goga shooga"
      - "Schnooka_goga"
      - "lorito_r01_gigaFifa"

将导致输出

TASK [Show pattern matching lines] *************
ok: [localhost] => (item=ar00n_giga) =>
  msg: ar00n_giga
ok: [localhost] => (item=new goga shooga) =>
  msg: new goga shooga
ok: [localhost] => (item=Schnooka_goga) =>
  msg: Schnooka_goga
ok: [localhost] => (item=lorito_r01_gigaFifa) =>
  msg: lorito_r01_gigaFifa

TASK [Show pattern matching lines] *************
ok: [localhost] => (item=ar00n_giga) =>
  ansible_loop_var: item
  item: ar00n_giga
ok: [localhost] => (item=new goga shooga) =>
  ansible_loop_var: item
  item: new goga shooga
ok: [localhost] => (item=Schnooka_goga) =>
  ansible_loop_var: item
  item: Schnooka_goga
ok: [localhost] => (item=lorito_r01_gigaFifa) =>
  ansible_loop_var: item
  item: lorito_r01_gigaFifa

TASK [Show pattern matching lines] *************
ok: [localhost] => (item=ar00n_giga) =>
  ansible_loop_var: item
  item: ar00n_giga
ok: [localhost] => (item=new goga shooga) =>
  ansible_loop_var: item
  item: new goga shooga
ok: [localhost] => (item=Schnooka_goga) =>
  ansible_loop_var: item
  item: Schnooka_goga
ok: [localhost] => (item=lorito_r01_gigaFifa) =>
  ansible_loop_var: item
  item: lorito_r01_gigaFifa

从Python包索引（PyPI）安装RHEL 7.9和Ansible的结果相同

```bash
ansible --version
...
ansible [core 2.11.12]
...
  python version = 2.7.5 (default, May 30 2023, 03:38:55) [GCC 4.8.5 20150623 (Red Hat 4.8.5-44)]
  jinja version = 2.11.3
  libyaml = True

简而言之，我无法重现错误（annot.：不断地）。
您收到的错误消息

fatal: [localhost]: FAILED! => {"msg": "template error while templating string: expected token 'end of print statement', got 'goga'. String: {{new goga shooga}}"}

是由debug任务中的语法错误引起的，

var: "{{ item }}"

而不是

var: item

或

msg: "{{ item }}"

赞(0）回复(0）举报 2023-10-22

我来回答

类似于Linux的REGEX(regex_search)EGREP -使用一个with_items循环使用多模式/范围显示模式匹配行(带空格)

2条答案

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