LIGO Data for ELabs served via the web

The Apache web server "httpd" is used to serve the data via a web URL of the form

Any recent version of the Apache httpd web server should work for this purpose. We will assume that the primary configuration file is installed in /etc/httd/conf, but if you build and install from a source package it will be something like /usr/local/apacheconf. We will put as much of the configuration as possible into a separate file in a separate subdirectory for ease of maintainance. The steps are:
  1. Go to the web server configuration directory (eg /etc/httpd/conf) and create a subdirectory called local.d.
  2. Edit the main configuration file, httpd.conf, and at the end of the file add these lines:
    # Load local config files for virtual servers or specific areas
    Include conf/local.d/*.conf
    As the comment indicates, this will load all files ending in ".conf" from that subdiectory.
  3. Go down into that subdirectory and create a file named i2u2-rds.conf, which contains:
    Alias  /data/frames    /data/ligo/frames
    <Directory "/data/ligo/frames">
        Options Indexes MultiViews IncludesNoExec
        IndexOptions FancyIndexing IconsAreLinks ScanHTMLTitles
        AllowOverride FileInfo AuthConfig Limit Indexes 
        Order allow,deny
        Allow from all
    Here /data/ligo/frames is the path to the data storage area -- adjust accordingly.
  4. Always check the configuration file for errors before restarting the daemon. The command is
    apachectl configtest 
    or you can try
    /etc/init.d/httpd configtest 
    The response should always be Syntax OK. If not, fix any problems.
  5. Restart the daemon:
      /etc/init.d/httpd restart

For reference, the configuration files used on tekoa and on the spy-hill server (named "alvarez") can be obtained via CVS with
 cvs -d co src/httpd/tekoa
 cvs -d co src/httpd/alvarez
but these contain the configuration for much more than just serving /data/ligo/frames.

-- Main.EricMyers - 09 Dec 2008
Topic revision: r3 - 2019-05-22, AdminUser
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