Elastic Compute Service:Deploy SVN over HTTP

Step 1: Install SVN

1. Connect to the Linux instance. For more information, see Connect to a Linux instance by using a password.
2. Run the following command to install SVN:

   yum install subversion -y

3. Run the following command to check the SVN version:

   svnserve --version

Step 2: Install Apache

1. Run the following command to install httpd:

   yum install httpd -y

2. Run the following command to check the httpd version:

   httpd -version

Step 3: Install mod_dav_svn

yum install mod_dav_svn -y

Step 4: Configure SVN

1. Run the following commands in sequence to create an SVN repository:

   mkdir /var/svn

   cd /var/svn
   svnadmin create /var/svn/svnrepos

2. Run the following command to change the user group of the SVN repository to apache:

   chown -R apache:apache /var/svn/svnrepos

3. Run the following commands in sequence to check the files that are automatically generated in the SVN repository:

   cd svnrepos

   ls

   

   The following table describes the SVN directories and files.

   Directory and file	Description
   db	Stores all version control data files.
   hooks	Stores hook scripts.
   locks	The client used to track access to the SVN repository.
   format	The text file that contains a single integer value. The value indicates the version number of the current SVN repository.
   conf	The configuration file of the SVN repository, which stores the usernames and permissions for accessing the repository.

4. Run the following command to add a username and password for the SVN repository.
   By default, the password for SVN is stored as plaintext. You must separately generate a passwd file for HTTP because HTTP does not support plaintext passwords. In this example, the added username is userTest and the password is passWDTest. Run one of the following commands:

   • If this is the first time that you add a user for the SVN repository, run the following command that contains -c to generate the passwd file:

     htpasswd -c /var/svn/svnrepos/conf/passwd userTest

   • If this is not the first time that you add a user for the SVN repository, run the following command to generate the passwd file:

     htpasswd /var/svn/svnrepos/conf/passwd userTest

   Set the password of the user.

5. Run the following command to go to the conf directory:

   cd /var/svn/svnrepos/conf/

6. Configure the read and write permissions for the account.
   1. Run the vi authz command to open the access control file.
   2. Press the I key to enter the edit mode.
   3. Move the pointer over the end of the file and add the following code. In the code, userTest specifies the username, r specifies the read permissions, and w specifies the write permissions.

      [/]
      userTest=rw

      
   4. Press the Esc key to exit the edit mode and enter :wq to save and close the file.
7. Modify the configurations of SVN.
   1. Run the vi svnserve.conf command to open the configuration file of SVN.
   2. Press the I key to enter the edit mode.
   3. Move the pointer over the following lines and delete the number sign (#) and space from the beginning of each line.
      Note Lines cannot start with a space. You must add a space before and after the equal sign (=).

      anon-access = read # Grant read permissions to anonymous users. You can also set anon-access to none to deny access by anonymous users. If you set anon-access to none, the operation dates in the SVN log can be shown properly.
      auth-access = write # Grant write permissions.
      password-db = passwd # Specify the password database file.
      authz-db = authz # Specify the file that stores the authorization rules for path-based access control.
      realm = /var/svn/svnrepos # Specify the authorization realm of the SVN repository.

      
   4. Press the Esc key to exit the edit mode and enter :wq to save and close the file.
8. Run the following command to start the SVN repository:
   The absolute path to the SVN repository is specified in the following example command:

   svnserve -d -r /var/svn/svnrepos/

   Note You can run the killall svnserve command to stop SVN.
9. Run the ps -ef |grep svn command to check whether SVN is started.
   A command output similar to the following one indicates that SVN is started.

Step 5: Configure Apache

1. Run the following command to add and edit the httpd configuration file:

   vim /etc/httpd/conf.d/subversion.conf

2. Press the I key to enter the edit mode.
3. Enter the following configurations:

   <Location /svn>
   DAV svn
   SVNParentPath /var/svn
   AuthType Basic
   AuthName "Authorization SVN"
   AuthzSVNAccessFile /var/svn/svnrepos/conf/authz
   AuthUserFile /var/svn/svnrepos/conf/passwd
   Require valid-user
   </Location>

4. Press the Esc key and enter :wq to save and close the file.
5. Run the following command to start the Apache service:

   systemctl start httpd.service

Step 6: Use a browser to test the access to SVN

1. Open the browser in your computer.
2. In the address bar, enter a URL in the http://<Public IP address of the ECS instance>/svn/<SVN repository name> format and press the Enter key. In this example, the SVN repository name is svnrepos.
3. Enter your username and password that you configured in the passwd file. In this example, the username is userTest and the password is passWDTest.
   The following command output indicates that the created SVN repository is accessed.