ansible lineinfile 正则表达式多行

问题描述

我正在尝试使用 Ansible 编辑 apache.conf.这是我的 conf 的一部分:

I'm trying to edit apache.conf using Ansible. Here's part of my conf:

# Sets the default security model of the Apache2 HTTPD server. It does
# not allow access to the root filesystem outside of /usr/share and /var/www.
# The former is used by web applications packaged in Debian,
# the latter may be used for local directories served by the web server. If
# your system is serving content from a sub-directory in /srv you must allow
# access here, or in any related virtual host.
<Directory />
        Options FollowSymLinks
        AllowOverride None
        Require all denied
</Directory>

<Directory /usr/share>
        AllowOverride None
        Require all granted
</Directory>

<Directory /var/www/>
        Options Indexes FollowSymLinks
        AllowOverride None
        Require all granted
</Directory>

#<Directory /srv/>
#       Options Indexes FollowSymLinks
        AllowOverride All
#       Require all granted
#</Directory>

我想改变这个块

<Directory /var/www/>
            Options Indexes FollowSymLinks
            AllowOverride None
            Require all granted
    </Directory>

进入

<Directory /var/www/>
            Options Indexes FollowSymLinks
            AllowOverride All
            Require all granted
    </Directory>

将 AllowOverride 从无设置为全部.我正在使用这个 ansible 任务

set AllowOverride from None to All. I'm using this ansible task

- name: change htaccess support
  lineinfile:
    dest: /etc/apache2/apache2.conf
    regexp: '\s<Directory /var/www/>\n\sOptions Indexes FollowSymLinks\n\sAllowOverride'
    line: "AllowOverride All"
  tags:
    - test

然而，AllowOverride All 总是添加到文件末尾.完成这项工作的正确正则表达式模式是什么.我不使用 ansible 模板，因为我只更改了一行.

However, AllowOverride All always added to the end of file. What's the correct regex pattern to do this jobs. I don't use ansible template cuz I only change one line.

推荐答案

我通过稍微改进 @mattyoung-redhatmatt 的答案来做到这一点.事实证明，replace 模块可以很好地处理多行正则表达式和反向引用:

I managed to do exactly this by slightly improving @mattyoung-redhatmatt's answer. As it turns out, the replace module handles multi line regular expressions and backreferences just fine:

- name: AllowOverride all
  replace:
    dest=/etc/apache2/apache2.conf
    regexp='(<[dD]irectory /var/www/>[^<]*)AllowOverride None'
    replace='\1AllowOverride All'
    backup=yes
  sudo: yes
  notify:
    - restart apache

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