-Last updated: 02/14/2001 +Last updated: 02/15/2001
This file describes issues associated with LON-CAPA @@ -32,6 +32,72 @@ and a SQL database.
+The current database is implemented assuming a non-adjustable +architecture involving these data fields (specific to each version +of a resource). +
+Security occurs as a function of the user 'www', +and the permissions on the files in the /usr/local/mysql +directory. (These files and directories should +be 700, 600, 500, 400, etc; not allow access to anyone +but user 'www'.) +
++These commands create the loncapameta database. +
+mysql> CREATE DATABASE IF NOT EXISTS loncapa;
+mysql> USE loncapa;
+mysql> CREATE TABLE IF NOT EXISTS metadata (title TEXT, author TEXT, subject TEXT, notes TEXT, abstract TEXT, mime TEXT, language TEXT, creationdate TEXT, lastrevisiondate TEXT, owner TEXT, copyright TEXT, FULLTEXT idx_title (title), FULLTEXT idx_author (author), FULLTEXT idx_subject (subject), FULLTEXT idx_notes (notes), FULLTEXT idx_abstract (abstract), FULLTEXT idx_mime (mime), FULLTEXT idx_language (language), FULLTEXT idx_creationdate (creationdate), FULLTEXT idx_lastrevisiondate (lastrevisiondate), FULLTEXT idx_owner (owner), FULLTEXT idx_copyright (copyright)) TYPE=MYISAM;
+mysql> INSERT INTO metadata VALUES ('1','2','3','4','5','6','7','8','9','10','11');
+mysql> SELECT * FROM metadata WHERE title REGEXP "1";
+
+
++Current time values for things. +
+fenchurch.lite.msu.edu +Mem: 46812K av, 45632K used, 1180K free, 14756K shrd, 4292K buff +Swap: 1148608K av, 11260K used, 1137348K free 13244K cached + +Red Hat Linux release 6.2 (Zoot) +Kernel 2.2.16-3 on an i586 ++
+An important quote from the manual: +
+In MySQL Version 3.23.23 or later, you can also create special FULLTEXT indexes. They are used for full-text search. Only the MyISAM table type supports FULLTEXT indexes. They can be created only from +VARCHAR and TEXT columns. Indexing always happens over the entire column and partial indexing is not supported. See section 25.2 MySQL Full-text Search for details. ++ +
+I plan on using a MyISAM table type with 11 metadata fields of column +type=TEXT. +
+It might be worthwhile to look at /usr/local/mysql/manual.html. It is quite in depth.
@@ -224,6 +290,51 @@ that is subsequently compiled). wind up in /usr/local/mysql-3.23.33-pc-linux-gnu-i686 except for a link from /usr/local/mysql to /usr/local/mysql-3.23.33-pc-linux-gnu-i686 and some files involved in system process handling (/etc/rc.d/*/*mysql). ++(As user=root) +cd /usr/local/; +tar xzvf mysql-3.23.33-pc-linux-gnu-i686.tar.gz +ln -s /usr/local/mysql-3.23.33-pc-linux-gnu-i686 mysql +cd /usr/local/mysql +chown -R www /usr/local/mysql/. +chgrp -R users /usr/local/mysql/. +chmod -R g-w,g-r,g-x /usr/local/mysql/. +(probably also want chmod -R a-w,a-r,a-x /usr/local/mysql/.) + +Alter safe_mysqld +and support-files/mysql.server to use 'localhosts' instead +of `bin/hostname`. Also, to use user 'www' instead of 'mysql'. + +(These changes could be done with /etc/my.cnf, but +I think this approach makes sure the database NEVER +gets screwed up due to somebody forgetting to install /etc/my.cnf). + +Change this line in mysql.server from + pid_file=$datadir/`@HOSTNAME@`.pid +to + pid_file=$datadir/localhost.pid + +Change this line in safe_mysqld from +user=root +to +user=www + +Change this line in safe_mysqld from + pid_file=$DATADIR/`/bin/hostname`.pid +to + pid_file=$DATADIR/localhost.pid + +Change this line in safe_mysqld from +test -z "$err_log" && err_log=$DATADIR/`/bin/hostname`.err +to +test -z "$err_log" && err_log=$DATADIR/localhost.err + +cp -p support-files/mysql.server /etc/rc.d/init.d/mysql +chmod 755 /etc/rc.d/init.d/mysql +/sbin/chkconfig --add mysql +/etc/rc.d/init.d/mysql start + +
This is how I installed the Msql-Mysql-modules perl modules.
@@ -243,6 +354,13 @@ Enter the appropriate number: [3] 1 Do you want to install the MysqlPerl emulation? You might keep your old Mysql module (to be distinguished from DBD::mysql!) if you are concerned about compatibility to existing applications! [y] n +Where is your MySQL installed? Please tell me the directory that +contains the subdir 'include'. [/usr/local/mysql] +Which database should I use for testing the MySQL drivers? [test] +On which host is database test running (hostname, ip address +or host:port) [localhost] +User name for connecting to database test? [undef] +Password for connecting to database test? [undef] [root@fenchurch Msql-Mysql-modules-1.2215]# make [root@fenchurch Msql-Mysql-modules-1.2215]# make test make[1]: Entering directory `/home/user/Msql-Mysql-modules-1.2215/mysql' @@ -287,7 +405,7 @@ These files are installed.This is how I installed the DBI perl modules. -
+$dbh [root@fenchurch DBI-1.14]# perl Makefile.PL *** Note: The optional PlRPC-modules (RPC::PlServer etc) are not installed. @@ -326,7 +444,7 @@ All tests successful, 1 test skipped. Files=7, Tests=179, 7 wallclock secs ( 6.46 cusr + 0.49 csys = 6.95 CPU) PERL_DL_NONLAZY=1 /usr/bin/perl -Iblib/arch -Iblib/lib -I/usr/lib/perl5/5.00503/i386-linux -I/usr/lib/perl5/5.00503 test.pl test.pl -DBI test application $Revision: 1.9 $ +DBI test application $Revision: 1.15 $ Using /home/user/DBI-1.14/blib Switch: DBI 1.14 by Tim Bunce, 1.14 Available Drivers: ADO, ExampleP, Multiplex, Proxy, mysql @@ -517,6 +635,21 @@ An up-to-date lond and lonsql.Testing
+To test the backend MySQL database, a number of commands should be +run after installation. +
+These are sections of perl code which helps test the LON-CAPA network.
** TEST the database connection with my current tester.pl code which mimics what command will eventually be sent through lonc.