DreamApps Wiki

The reference platforms and their recommended settings are:

• Install Standard System with Gnome

• Using Yast, install postgresql server
• Run postgresql, initialize and configure database, using following commands:

  
    service postgresql start
    su - postgres
    createdb da
    createuser sa
    Superuser? yes
    psql da
    create language plpgsql;
    \q
    exit

• Edit configuration files pg_hba.conf and postgresql.conf

pg_hba.conf - relace authentication method 'ident same' with 'trust' for localhost

postgresql.conf - set parameters depending on server memory size

*For OpenSuse 12.1 and later, you will need to add the following lines in /etc/sysctl.conf

kernel.shmmax=17179869184   #if you want max shared_buffer size of 16GB.
kernel.shmall=4194304

• Reload configuration using command

sysctl -p /etc/sysctl.conf 

• Restart postgresql using command

service postgresql restart

• Click here if you'd want to set up Standby Server Replication

(*for Tomcat 7 on OpenSuse 12 and later, see at the end of the page)

• Using Yast, install tomcat container and webapps modules
• Create symbolic link tomcat in folder /usr using File Manager or the following command

      ln -s /usr/share/tomcat /usr/tomcat

• Unzip sharedlib.zip into /usr/tomcat/lib to place additional .jar files.
• Copy da.war into folder /usr/tomcat/webapps
• Edit file /usr/tomcat/conf/server.xml to change port 8080 to 80
• Edit file /usr/tomcat/conf/tomcat6.conf to change TOMCAT_USER from tomcat to root
• Edit file /usr/tomcat/conf/tomcat6.conf to add the following line

      CATALINA_OPTS="-Djava.awt.headless=true -Xmx1400M"

Note: -Xmx (Maximum Java heap size) for a production system with 4GB of memory should be around 1400M, leaving ample room for PostgreSQL. You may need to change this for systems with higher memories.

• Copy index.html into ROOT, using command

      cp /usr/tomcat/webapps/da/index.html /usr/tomcat/webapps/ROOT

• Start Tomcat using command

      service tomcat6 start

Using Yast, set up System Services(Runlevel) so that PostgreSQL and Tomcat are automatically started at boot. Reboot server to complete installation

The next step is to license your server. Click here for details of the licensing process

OpenSuse now uses systemd based service runner, instead of /etc/init.d/tomcat.

• Using Yast, install tomcat container and webapps modules
• Create symbolic link tomcat in folder /usr using File Manager or the following command

      ln -s /usr/share/tomcat /usr/tomcat

• Unzip sharedlib.zip into /usr/tomcat/lib to place additional .jar files.
• Copy da.war into folder /usr/tomcat/webapps

You need to make the following changes

- /usr/tomcat/conf/server.xml – change port 8080 to 80

- /usr/tomcat/conf/tomcat.conf – add the lines

  TOMCAT_USER="root"
  TOMCAT_GROUP="root"
  SECURITY_MANAGER="false"
  CATALINA_OPTS="-Djava.awt.headless=true -Xmx1400M" #for RAM with 4GB, more for servers with higher RAM

- /usr/lib/systemd/system/tomcat.service – comment out user and group.

- /usr/sbin/tomcat-sysd – comment out the routine for checking uid=0

There is a bug in the yast in 12.3. You cannot stop automatic startup of firewall. You need to run these commands

systemctl status SuSEfirewall2.service
systemctl enable SuSEfirewall2.service
systemctl start SuSEfirewall2.service
systemctl stop SuSEfirewall2.service
systemctl disable SuSEfirewall2.service

If the Java version is OpenJDK 1.7 in AWS, please copy the certificate from an Windows machine

copy C:\Program Files\Java\jdk1.8.0_25\jre\lib\security\cacerts to /var/lib/ca-certificates/java-cacerts from Windows to SUSE

To Change hostname in OpenSuse, edit the following files:

/etc/HOSTNAME
/etc/hostnames