Annotation of doc/build/manual_install.frag, revision 1.8

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

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