regex - ansible lineinfile 正则表达式 多行

Question

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

# 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 block

<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 None 设置为 All。我正在使用这个ansible任务

- 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

但是，AllowOverride All 始终添加到文件末尾。做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。

Answer 1

通过稍微改进@mattyoung-redhatmatt 的答案，我设法做到了这一点。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:

- 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