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<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta name=Title content=" Different Types of LON-CAPA Servers"> <meta name=Keywords content=""> <meta http-equiv=Content-Type content="text/html; charset=macintosh"> <meta name=ProgId content=Word.Document> <meta name=Generator content="Microsoft Word 10"> <meta name=Originator content="Microsoft Word 10"> <link rel=File-List href="Different%20Types%20of%20LON_files/filelist.xml"> <title> Different Types of LON-CAPA Servers</title>  <style>  </style> </head> <body bgcolor=white lang=EN-US style='tab-interval:.5in'> <div class=Section1><span style='font-size:14.0pt;font-family:"Times New Roman"; mso-ansi-language:EN-US'><b><br clear=ALL style='page-break-before:always'> </b></span> <h1><a name="_Toc421867148">Different Types of LON-CAPA Servers</a></h1> <p><i>Scott Harrison, freeware volunteer, sharrison@sourceforge.net</i><span style='font-style:normal'> </span></p> <h2><a name="_Toc421867149">Introduction</a></h2> <p>There are two different kinds of LON-CAPA servers, Library Servers and Access Servers. On any LON-CAPA machine, you can look at the server type by viewing the file <tt><span style='font-family:"Courier New"'>/etc/httpd/conf/loncapa.conf</span></tt> and looking at the variable <strong>lonRole</strong>. </p> <h2><a name="_Toc421867150">Library Servers</a></h2> <p>Library Servers are repositories of authoritative educational resources. These servers also provide the construction space by which instructors assemble their classroom online material. First-time installations of LON-CAPA at an institution should be for Library Servers (and not Access Servers). </p> <p>Only Library Servers make use of a MySQL database. </p> <p>On the filesystem, the following directories are used primarily by Library Servers (and not Access Servers): </p> <ul type=disc> <li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto; mso-list:l0 level1 lfo1;tab-stops:list .5in'><tt><span style='font-family: "Courier New"'>/home/USERNAME/</span></tt> - authors are standard Linux users that exist on Library Servers </li> <li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto; mso-list:l0 level1 lfo1;tab-stops:list .5in'><tt><span style='font-family: "Courier New"'>/home/httpd/lonUsers/</span></tt> - user profile information is stored inside Library Servers </li> <li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto; mso-list:l0 level1 lfo1;tab-stops:list .5in'><tt><span style='font-family: "Courier New"'>/home/httpd/html/res/</span></tt></li> </ul> <p class=MsoNormal style='margin-left:.5in'>- Library Servers use this space to hold authoritative or cached versions of educational resources; Access Servers only use this space to hold cached versions of educational resources </p> <h2><a name="_Toc421867151">Access Servers</a></h2> <p>Access Servers load-balance high-traffic delivery of educational resources over the world-wide web. Access Servers do not require a MySQL database and do not contain Linux user accounts. Several of the active directories on Library Servers are not needed on an Access Servers. </p> </div> <span style='font-size:12.0pt;font-family:Times;mso-ansi-language:EN-US'><br clear=ALL style='page-break-before:always;mso-break-type:section-break'> </span> <div class=Section2> <p class=MsoNormal><![if !supportEmptyParas]> <![endif]><o:p></o:p></p> </div> </body> </html>