Annotation of doc/build/manual_install.frag, revision 1.6
1.1 bowersj2 1: <p>
2: You will need to check all the following things to ensure proper
1.2 bowersj2 3: installation of your LON-CAPA system. Be sure to use the <a
1.6 ! matthew 4: href="rh73.html">RedHat 7.3</a> or <a href="fedora_install.html">Fedora</a> specific instructions if they apply,
1.2 bowersj2 5: as that will be much easier for you.
1.1 bowersj2 6: </p>
7: <ul>
1.2 bowersj2 8: <li><a href="#download">Downloading LON-CAPA</a></li>
1.1 bowersj2 9: <li><a href="#wwwuser">
10: Creating a user 'www'</a></li>
11: <li><a href="#shadow">
12: Make a LON-CAPA system work with shadow passwords</a></li>
13: <li><a href="#install">
14: Installing LON-CAPA files</a></li>
1.5 albertel 15: <li><a href="#perl">
16: Installing CPAN modules</a></li>
1.1 bowersj2 17: <li><a href="#checkrpms">
18: Checking your Linux RPMs</a> (On RedHat)</li>
19: <li><a href="#fixhosts">
20: Fixing <tt>/etc/hosts</tt></a></li>
21: <li><a href="#mysql">
22: Configuring the MySQL database</a></li>
23: <li><a href="#testing">
24: Testing to see if the LON-CAPA server is operational</a></li>
25: </ul>
26:
1.2 bowersj2 27: <a name="download" />
28: <h3>Downloading LON-CAPA</h3>
29:
30: <p>
31: <b>Current Release is Version LATESTVERSION.
32: This version was released on LATESTDATE.</b>
33: </p>
34: <p>
1.4 bowersj2 35: You can download the <b>most current version of LON-CAPA</b> at
1.2 bowersj2 36: <a href="http://install.lon-capa.org/versions/loncapa-current.tar.gz">
1.4 bowersj2 37: http://install.lon-capa.org/versions/loncapa-current.tar.gz</a>
1.2 bowersj2 38: (version LATESTVERSION).
39: </p>
40: <p>
1.4 bowersj2 41: The <b>development release of LON-CAPA</b> is at:
1.2 bowersj2 42: <a href="http://install.lon-capa.org/versions/loncapa-unstable.tar.gz">
1.4 bowersj2 43: http://install.lon-capa.org/versions/loncapa-unstable.tar.gz</a>.
1.2 bowersj2 44: </p>
45: <p>
46: To view the code development history of LON-CAPA, you will need to use the
47: <a href="http://www.cvshome.org/">CVS</a> tool, the open standard for
48: version control. Please contact Helen (<a href="mailto:helen@lon-capa.org">
49: helen@lon-capa.org</a>) to request a CVS USERNAME.
50: </p>
51: <p>
52: The initial CVS commands would be:
53: </p>
54: <blockquote>
55: <table bgcolor="#aaaaaa" border="1">
56: <tr><td>
57: <pre>
58: export CVSROOT=:pserver:USERNAME@zaphod.lite.msu.edu:/home/cvs
59: cvs login
60: cvs co loncapa
61: </pre>
62: </td></tr></table>
63: </blockquote>
64: <p>
65: For more information on using CVS, please visit
66: <a href="http://www.cvshome.org/">http://www.cvshome.org/</a>
67: or read <tt>loncom/build/readme.html</tt> after downloading
68: the current version of LON-CAPA as described above.
69: </p>
70:
1.1 bowersj2 71: <a name="wwwuser" />
72: <h3>Creating a user 'www'</h3>
73: <p>
74: Execute the following command to create a user named 'www' on your
75: LON-CAPA server:
76: </p>
77: <table bgcolor="#aaaaaa" border="1"><tr><td>
78: <tt>/usr/sbin/useradd www</tt>
79: </td></tr></table>
80: <a name="shadow" />
81: <h3>Make a LON-CAPA system work with shadow passwords</h3>
82: <table border="1">
83: <tr><th>Step #</th><th>Description</th></tr>
84: <tr><td>
85: <font size="+1">1</font>
86: </td><td>
87: <p>Is your system using shadow passwords? (Note: LON-CAPA will work
88: with either MD5/non-MD5 configured systems). It is strongly
89: recommended to use shadow passwords. If your system is currently not
90: using shadow passwords, run the "pwconv" command (as root) in order to
91: convert to shadow passwords. If you choose not to use shadow
92: passwords, then do not perform any of the additional steps. If your
93: system is using shadow passwords, then you will need to perform the
94: additional steps below.
95: </p>
96: <p>
97: <strong>How to detect:</strong>
98: <br />command: <tt>cat /etc/passwd | grep ':x:'</tt>
99: </p>
100: <p>If there is output such as "<tt>root:x:0:0:root:/root:/bin/bash</tt>",
101: then your system is using shadow passwords and you will need to continue with
102: the steps below.
103: </p>
104: </td></tr>
105: <tr><td>
106: <font size='+1'>2</font>
107: </td><td>
108: <p><strong>Retrieve the mod_auth_external source</strong> by
109: running the following command
110: </p>
111: <p><tt>
112: wget http://www.unixpapa.com/software/mod_auth_external-2.1.15.tar.gz
113: </tt>
114: </p>
115: </td></tr>
116: <tr><td>
117: <font size='+1'>3</font>
118: </td><td>
119: <p><strong>Unpack the mod_auth_external source</strong> by
120: running the following command
121: </p>
122: <p>
123: <tt>tar xzvf mod_auth_external-2.1.15.tar.gz</tt>
124: </p>
125: </td></tr>
126: <tr><td>
127: <font size='+1'>4</font>
128: </td><td>
129: <p><strong>Go to the <tt>pwauth</tt> directory</strong> by
130: running the following command
131: </p>
132: <p>
133: <tt>cd mod_auth_external-2.1.15/pwauth/</tt>
134: </p>
135: </td></tr>
136: <tr><td>
137: <font size='+1'>5</font>
138: </td><td>
139: <p><strong>Edit <tt>config.h</tt> and change SERVER_UIDS definition</strong>
140: </p>
141: <p>
142: Determine the user id of 'www':
143: <br /><tt>id -u www</tt>
144: <br />
145: Change the line
146: <br /><tt>#define SERVER_UIDS 99 /* user "nobody" */</tt>
147: <br />to be
148: <br /><tt>#define SERVER_UIDS 513 /* user "www" */</tt>
149: <br />where in this example 513 corresponds to the user id of 'www'.
150: </p>
151: </td></tr>
152: <tr><td>
153: <font size='+1'>6</font>
154: </td><td>
155: <p><strong>Compile the <tt>pwauth</tt> executable</strong> by
156: running the following command
157: </p>
158: <p>
159: <tt>make</tt>
160: </p>
161: </td></tr>
162: <tr><td>
163: <font size='+1'>7</font>
164: </td><td>
165: <p><strong>Install <tt>pwauth</tt></strong> by doing the following
166: </p>
167: <p>
168: <tt>cp pwauth /usr/local/sbin/</tt>
169: <br /><tt>chmod 6755 /usr/local/sbin/pwauth</tt>
170: </p>
171: <p>
172: Edit (creating the file) /etc/pam.d/pwauth to have the contents:
173: </p>
174: <pre>
175: auth required /lib/security/pam_pwdb.so shadow nullok
176: auth required /lib/security/pam_nologin.so
177: account required /lib/security/pam_pwdb.so
178: </pre>
179: </td></tr>
180: </table>
181: <a name="install" />
182: <h3>Installing LON-CAPA files</h3>
183: <p>
184: Download the most current
185: <a href="http://install.lon-capa.org/versions/loncapa-current.tar.gz">
186: loncapa-current.tar.gz</a>.
187: </p>
188: <table bgcolor="#aaaaaa" border="1">
189: <tr><td><tt>wget http://install.lon-capa.org/versions/loncapa-current.tar.gz
190: </tt>
191: <br />
192: <tt>tar xzvf loncapa-current.tar.gz</tt>
193: <br />
194: <tt>cd loncapa-N.N</tt> (N.N is the version number)</td></tr>
195: </table>
196: <p>
197: The <strong>UPDATE</strong> command will refresh your filesystem with all
198: the latest LON-CAPA software.
199: </p>
200: <table bgcolor="#aaaaaa" border="1">
201: <tr><td><tt>./UPDATE</tt></td></tr>
202: </table>
1.5 albertel 203: <a name="perl" />
204: <h3>Installing CPAN modules</h3>
205:
206: <p> Lon-CAPA uses a large numbe of perl modules that need to be
207: installed. Some of these may be available on your machine already,
208: some can be gotten from packages in your Linux Distribution. Some will probably need to come from CPAN </p>
209:
210: <p> You can check which modules you have and which ones you need by
211: running the TEST script. It will generate a CPAN_STATUS_REPORT.
212: You can install an missing perl modules by doing:
213: <table bgcolor="#aaaaaa" border="1">
214: <tr><td><tt>perl -MCPAN -e 'install MODULENAME'</tt></td></tr>
215: </table>
216: Where MODULENAME is the perl module you need to install.
217: </p>
218: <p>
219: More documentation on how CPAN works is available <a href="http://www.perl.com/CPAN/misc/cpan-faq.html#How_install_Perl_modules">here</a>
220: </p>
221:
1.1 bowersj2 222: <a name="checkrpms" />
223: <h3>Checking your Linux RPMs on RedHat</h3>
224: <p>
225: The <strong>CHECKRPMS</strong> command will check the RPMs on your machine
226: against an FTP repository, if you're using a RedHat server.
227: </p>
228:
229: <table bgcolor="#aaaaaa" border="1">
230: <tr><td><tt>./CHECKRPMS</tt></td></tr>
231: </table>
232:
233: <p>If you are not installing on RedHat, you may need to manually
234: install some software. The following pointers may be useful:</p>
235:
1.2 bowersj2 236: <ul><li>LON-CAPA uses a lot of Perl modules. If you are using RedHat,
237: go to <a href="http://install.lon-capa.org/resources">this
238: directory</a> and download the latest
239: <b>LON-CAPA-systemperl-?.?-rh7.i386.rpm</b>, which will contain all
240: the Perl modules you need on RedHat. Use <tt>rpm-Uvh --force</tt> to
241: install the RPM; this will overwrite some currently existing files and
242: that's OK.
243:
244: <br /><br />For other Linux distributions, the easiest way to figure
1.1 bowersj2 245: out what Perl modules are being used by LON-CAPA that you do not have
246: installed is to try to start up LON-CAPA and see what Perl complains
247: about missing. Start by trying to run <tt>/home/httpd/perl/lonc</tt>
248: and <tt>/home/httpd/perl/lond</tt> manually as the <tt>www</tt> user,
249: and install the modules it complains about not finding. How you
250: install those modules will be distribution-specific, but failing all
251: else, you can use CPAN; see <tt>man CPAN</tt> on your distribution.<br
252: /><br />Once you've gotten <tt>lonc</tt> and <tt>lond</tt> to run, try
253: starting up the webserver. How long this will take depends entirely on
254: how close your distribution came to having all the modules LON-CAPA
255: uses when you started.</li>
256: <li>LON-CAPA assumes that the apache web server will be named "httpd"
257: and have configuration directories in <tt>/etc/httpd</tt>. Some distributions
258: have that directory at <tt>/etc/apache</tt>. Symlinking <tt>httpd</tt> to the correct
259: directory should work.</li>
260: </ul>
261: <a name="fixhosts" />
262: <h3>Fixing <tt>/etc/hosts</tt></h3>
263: <p>
264: A common RedHat glitch of new installations (RedHat's fault, not LON-CAPA)
265: is the generation of /etc/hosts.
266: </p>
267: <p>
268: It should look something like this (except the <tt>myschool</tt> line
269: should be replaced with settings specific to your machine):
270: </p>
271: <table bgcolor="#aaaaaa" border="1">
272: <tr><td>
273: <pre>
274: 127.0.0.1 localhost.localdomain localhost
275: 12.34.56.78 www.myschool.edu myschool
276: </pre></td></tr>
277: </table>
278: <a name="mysql" />
279: <h3>Configuring the MySQL database</h3>
280: <p>
281: The following commands describe how to configure the MySQL database
282: on your LON-CAPA server.
283: <br />Note:
284: </p>
285: <ul>
286: <li>you should substitute 'ROOTPASSWORD' with something very hard to guess
287: (it does not have to be the Linux OS root password)
288: </li>
289: <li>The MySQL www@localhost user must always have a password of 'localhostkey'
290: in order for there to be correct operation of a standard LON-CAPA system.
291: </li>
292: </ul>
293: <p>
294: The following instructions assume you are logged in as 'root'.
295: </p>
296: <p>Entering the mysql shell</p>
297: <table bgcolor="#aaaaaa" border="1"><tr><td>
298: <pre>
299: mysql -u root -p mysql
300: OR
301: mysql -u root mysql (depending on whether you have set a root password)
302: </pre>
303: </td></tr></table>
304: <p>Creating the mysql 'www' user (after entering mysql shell)</p>
305: <table bgcolor="#aaaaaa" border="1"><tr><td>
306: <pre>
307: mysql> CREATE DATABASE loncapa;
308:
309: mysql> INSERT INTO user (Host, User, Password)
310: mysql> VALUES ('localhost','www',password('localhostkey'));
311:
312: mysql> INSERT INTO db VALUES ('localhost','loncapa','www',
313: mysql> 'Y','Y','Y','Y','Y','Y','N','Y','Y','Y');
314:
315: mysql> FLUSH PRIVILEGES;
316: </pre>
317: </td></tr></table>
318: <p>SECURITY: set a password for the mysql 'root' user</p>
319: <table bgcolor="#aaaaaa" border="1"><tr><td>
320: <pre>
321: shell> mysql -u root mysql
322: mysql> SET PASSWORD FOR root@localhost=PASSWORD('ROOTPASSWORD');
323: </pre>
324: </td></tr></table>
325: <p>SECURITY: only allow access from localhost</p>
326: <table bgcolor="#aaaaaa" border="1"><tr><td>
327: <pre>
328: shell> mysql -u root -p mysql
329: mysql> DELETE FROM user WHERE host<>'localhost';
330: </pre>
331: </td></tr></table>
332: <a name="testing" />
333: <h3>Testing to see if the LON-CAPA server is operational</h3>
334: <p>
335: The <strong>TEST</strong> command will check the installation software,
336: the perl libraries on your system, the MySQL database, and
337: will also automatically test the real-time operation of the
338: LON-CAPA Apache web server.
339: </p>
340: <table bgcolor="#aaaaaa" border="1">
341: <tr><td><tt>./TEST</tt></td></tr>
342: </table>
343: <p>
344: Using the <strong>TEST</strong> command will likely
345: be an iterative process.
346: It is normal to expect that the <strong>TEST</strong> command
347: will recommend you perform various steps to ensure optimal
348: performance of your LON-CAPA server.
349: </p>
350: <!-- maintext end -->
351: <!-- validated -->
352: </body>
353: </html>
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