= Installation Tips =
[wiki:Installing Back to General Installation.]

'''Debian GNU/Linux'''

We highly recommend using Debian stable as the host operating system. [[BR]]
It is a free, stable, powerful and very widely used operating system for servers. [[BR]]
All our testing and configuration is done against Debian servers. [[BR]]

 * Install Java-7, be sure that no gcj (GNU java) packages are installed:
{{{
dpkg --get-selections |grep gcj
}}}
 Note: The above search command must return NO packages.

 * Install Java-7:
  * [http://www.kromhouts.net/blog/server-admin/oracle-sun-java-jdk-for-debian-ubuntu-linux-mint/]

 * Install tomcat:
{{{
aptitude install tomcat6
}}}

 * Install mysql:
{{{
aptitude install mysql-server
}}}

'''Tomcat'''

 * In Debian add/adjust the following lines in /etc/default/tomcat6:
  * JAVA_HOME=/usr/local/bin/oracle-java-default
  * JAVA_OPTS="-Djava.awt.headless=true -Xms256m -Xmx256M -XX:PermSize=80m -XX:MaxPermSize=80m -XX:+UseConcMarkSweepGC"

 * As always the more memory the better but gnuMims is known to run on the demo at this setting.

Only Debian Lenny (old stable):
 * To work around a java.lang.!UnsatisfiedLinkError in Debian Lenny run the following commands:
  * i386: ln -s /usr/lib/jvm/java-1.5.0-sun/jre/lib/i386/libmlib_image.so /usr/lib
  * amd64: ln -s /usr/lib/jvm/java-1.5.0-sun/jre/lib/amd64/libmlib_image.so /usr/lib
  * both: ldconfig
 * Note: 
  * The above security settings should not be used in production, see http://tomcat.apache.org/tomcat-5.5-doc/security-manager-howto.html

'''Memory Tips'''

 * !GnuMims has been known to load and run on a 300Mhz laptop with <180MB total RAM but would not be very usable.
 * A Debian GNU/Linux machine with at least 1GB RAM and P4 equivalent processor is recommended.
 * For a Windows 2003 server directly running tomcat you may need more than 2G of RAM (that's why we recommend a dedicated Debian GNU/Linux)
 * A vmware virtual appliance (GNU/Linux + Tomcat + Mysql) with 1G of RAM should work ok on a Windows 2003 server if you must run Windows.

'''Apache2 Setup Tips'''

 * It is common (but not required) to have Tomcat run through Apache.
  * This is an apache example config using libapache2-mod-jk:
{{{
JkMount /gnuMims/* ajp13_worker

<VirtualHost *:80>
    ServerAdmin contact@example.com
    ServerName gnumims.example.com

    #Requests for "/" and "/gnuMims" are redirected to "/gnuMims/"
    #[R] is an external redirect so the url is passed back to the browser.
    RewriteEngine  on
    RewriteRule    ^/$              /gnuMims/       [L,R]
    RewriteRule    ^/gnuMims$       /gnuMims/       [L,R]

   JkMount /gnuMims/* ajp13_worker

</VirtualHost>
}}}
  * To enable libapache2-mod-jk in Debian set these lines in /etc/apache2/mods-available/jk.conf:
{{{
JkWorkersFile   /etc/libapache2-mod-jk/workers.properties
JkLogFile       /var/log/apache2/mod_jk.log
JkLogLevel      info
JkMount /*.jsp ajp13_worker
JkMount /*/servlet/ ajp13_worker
}}}
  * To configure mod-jk in Debian double check these lines in /etc/libapache2-mod-jk/workers.properties:
{{{
workers.tomcat_home=/usr/share/tomcat6
workers.java_home=/usr/lib/jvm/default-java
}}}
  * Then run: 
   * a2enmod jk
   * /etc/init.d/apache2 restart

'''MySQL Tips'''

 * In Debian MySQL only listens on 127.0.0.1 out of the box.
 * ONLY if you need to access mysql from outside, then comment this line out in /etc/mysql/my.cnf:
  * #bind-address           = 127.0.0.1

'''Firewall Tips'''

 * Every server must have a firewall, we use shorewall firewall.
 * Ports of interest - http:80, https:443, Tomcat(Debian):8180 or 8080, MySQL:3306.

=== One again, please contact us if any of this does not work for you. ===