重新安装后，使用 Subversion 服务器启动 Apache Web 服务器时出现“未知 DAV 提供程序：svn”

Question

作为调查设置可通过 Apache Web 服务器访问的 Subversion 存储库的一部分，我想删除 Subversion 和 Apache2，然后重新进行安装。

第二次安装时，似乎安装导致一些文件和组件丢失，特别是文件和目录，/etc/apache2/例如mods-enabled。几个dav文件（dav_fs.conf、、、和）也丢失了。但是，在使用选项重新执行命令后，文件被重新创建。但没有为文件创建符号链接。dav_fs.loaddav.loaddav_svn.confdav_svn.loadaptreinstallmods-availablemods-enableddav

我可以通过使用命令查看状态systemctl status apache2.service、查看 Apache2 服务器日志/var/log/apache2并在互联网上搜索错误消息来纠正 Apache2 服务器启动错误。

对于此错误，有几篇文章提到将指令添加LoadModule dav_svn_module /usr/lib/apache2/modules/mod_dav_svn.so到文件中httpd2.conf，但是在我的 Apache 服务器中，有一个文件/etc/apache2/apache2.conf似乎是配置参数的起点，并且在处理此文件期间，根据以下评论，位于子目录中的其他文件/etc/apache2/apache2.conf：

# * Configuration files in the mods-enabled/, conf-enabled/ and sites-enabled/
#   directories contain particular configuration snippets which manage modules,
#   global configuration fragments, or virtual host configurations,
#   respectively.

IncludeOptional附加配置文件通过中的指令加载apache2.conf。

根据@user535733的建议，他指出Unix & Linux StackExchange：未知 DAV 提供商：svn，我决定通过使用以下命令LoadModule重新创建文件来尝试该指令：/etc/apache2/mods-available/dav_svn.load

# Depends: dav
LoadModule dav_svn_module     /usr/lib/apache2/modules/mod_dav_svn.so

然后将符号链接到目录中/etc/apache2/mods-enabled/。

dav_fs.conf当我为其他 DAV 相关文件（、dav_fs.load和dav.load）创建符号链接时，此方法有效。

sudo apt upgrade 错误

我以为我已经解决了所有问题，但几天后我尝试运行，sudo apt upgrade却sudo apt update显示以下错误：

rick@rick-MS-7B98:/etc/apache2/mods-enabled$ sudo apt upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Setting up libapache2-mod-svn (1.13.0-3) ...
dpkg: error processing package libapache2-mod-svn (--configure):
 installed libapache2-mod-svn package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 libapache2-mod-svn
E: Sub-process /usr/bin/dpkg returned an error code (1)

我尝试了几种方法来清除这个错误，最后才成功。

我尝试过sudo apt reinstall libapache2-mod-svn，但出现了类似的错误。

我尝试了sudo apt remove libapache2-mod-svn一下，成功了，并且能够sudo apt upgrade毫无错误地完成操作，但是模块现在已被删除。

我尝试过sudo apt-get install libapache2-mod-svn，但出现了类似的错误。

然后，我尝试了一篇文章中建议的有关此类错误的一些命令：sudo dpkg --configure -a但sudo apt-get install -f出现了以下错误：

rick@rick-MS-7B98:~$ sudo dpkg --configure -a
Setting up libapache2-mod-svn (1.13.0-3) ...
dpkg: error processing package libapache2-mod-svn (--configure):
 installed libapache2-mod-svn package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 libapache2-mod-svn
rick@rick-MS-7B98:~$ sudo apt-get install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up libapache2-mod-svn (1.13.0-3) ...
dpkg: error processing package libapache2-mod-svn (--configure):
 installed libapache2-mod-svn package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 libapache2-mod-svn
E: Sub-process /usr/bin/dpkg returned an error code (1)

我尝试通过使用sudo apt remove libapache2-mod-svn然后执行sudo apt update然后sudo apt upgrade然后纠正这些错误sudo apt install libapache2-mod-svn，但失败并显示类似的错误消息。

最后，我使用了一系列命令来删除（sudo apt remove libapache2-mod-svn）、清除（sudo apt purge libapache2-mod-svn），然后安装（sudo apt-get install libapache2-mod-svn），这些命令似乎运行正常，没有任何错误。然后我必须/etc/apache2/mods-enabled/dav_svn.conf再次修改文件，然后我才能通过访问我的 Subversion 存储库http://192.168.0.4/svn。

rick@rick-MS-7B98:/etc/apache2/mods-enabled$ sudo apt remove libapache2-mod-svn
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
  libapache2-mod-svn
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 452 kB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 196824 files and directories currently installed.)
Removing libapache2-mod-svn (1.13.0-3) ...
apache2_invoke authz_svn prerm: No action required
apache2_invoke dav_svn prerm: No action required
rick@rick-MS-7B98:/etc/apache2/mods-enabled$ sudo apt purge libapache2-mod-svn
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
  libapache2-mod-svn*
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
(Reading database ... 196812 files and directories currently installed.)
Purging configuration files for libapache2-mod-svn (1.13.0-3) ...
apache2_invoke authz_svn postrm: No action required
apache2_invoke postrm: Purging state for dav_svn
rick@rick-MS-7B98:/etc/apache2/mods-enabled$ sudo apt-get install libapache2-mod-svn
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
  db5.3-util
The following NEW packages will be installed:
  libapache2-mod-svn
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/87.7 kB of archives.
After this operation, 452 kB of additional disk space will be used.
Selecting previously unselected package libapache2-mod-svn.
(Reading database ... 196809 files and directories currently installed.)
Preparing to unpack .../libapache2-mod-svn_1.13.0-3_amd64.deb ...
Unpacking libapache2-mod-svn (1.13.0-3) ...
Setting up libapache2-mod-svn (1.13.0-3) ...
apache2_invoke: Enable module authz_svn
apache2_invoke dav_svn: already enabled
rick@rick-MS-7B98:/etc/apache2/mods-enabled$ sudo apt upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

Answer 1