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157:
158: <h1><a name="_Toc421867148">Different Types of LON-CAPA Servers</a></h1>
159:
160: <p><i>Scott Harrison, freeware volunteer, sharrison@sourceforge.net</i><span
161: style='font-style:normal'> </span></p>
162:
163: <h2><a name="_Toc421867149">Introduction</a></h2>
164:
165: <p>There are two different kinds of LON-CAPA servers, Library Servers and
166: Access Servers. On any LON-CAPA machine, you can look at the server type by
167: viewing the file <tt><span style='font-family:"Courier New"'>/etc/httpd/conf/loncapa.conf</span></tt>
168: and looking at the variable <strong>lonRole</strong>. </p>
169:
170: <h2><a name="_Toc421867150">Library Servers</a></h2>
171:
172: <p>Library Servers are repositories of authoritative educational resources.
173: These servers also provide the construction space by which instructors assemble
174: their classroom online material. First-time installations of LON-CAPA at an
175: institution should be for Library Servers (and not Access Servers). </p>
176:
177: <p>Only Library Servers make use of a MySQL database. </p>
178:
179: <p>On the filesystem, the following directories are used primarily by Library
180: Servers (and not Access Servers): </p>
181:
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186: users that exist on Library Servers </li>
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188: mso-list:l0 level1 lfo1;tab-stops:list .5in'><tt><span style='font-family:
189: "Courier New"'>/home/httpd/lonUsers/</span></tt> - user profile
190: information is stored inside Library Servers </li>
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195:
196: <p class=MsoNormal style='margin-left:.5in'>- Library Servers use this space to
197: hold authoritative or cached versions of educational resources; Access Servers
198: only use this space to hold cached versions of educational resources </p>
199:
200: <h2><a name="_Toc421867151">Access Servers</a></h2>
201:
202: <p>Access Servers load-balance high-traffic delivery of educational resources
203: over the world-wide web. Access Servers do not require a MySQL database and do
204: not contain Linux user accounts. Several of the active directories on Library
205: Servers are not needed on an Access Servers. </p>
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