Installing as a Linux Service

Follow the sections below to run a WSO2 product as a Linux service:

Prerequisites

• Install JDK and set up the JAVA_HOME environment variable.

Setting up CARBON_HOME

Extract the WSO2 product to a preferred directory in your machine and set the environment variable CARBON_HOME to the extracted directory location.

Running the product as a Linux service

1. To run the product as a service, create a startup script and add it to the boot sequence. The basic structure of the startup script has three parts (i.e., start, stop and restart) as follows:

   #!/bin/bash
    
   case “$1″ in
   start)
      echo “Starting the Service”
   ;;
   stop)
      echo “Stopping the Service”
   ;;
   restart)
      echo “Restarting the Service”
   ;;
   *)
      echo $”Usage: $0 {start|stop|restart}”
   exit 1
   esac

   Given below is a sample startup script. <API-M_HOME> can vary depending on the WSO2 product's directory.

   #! /bin/sh
   export JAVA_HOME="/usr/lib/jvm/jdk1.7.0_07"
   
   startcmd='<API-M_HOME>/bin/wso2server.sh start > /dev/null &'
   restartcmd='<API-M_HOME>/bin/wso2server.sh restart > /dev/null &'
   stopcmd='<API-M_HOME>/bin/wso2server.sh stop > /dev/null &'
   
   case "$1" in
   start)
      echo "Starting the WSO2 Server ..."
      su -c "${startcmd}" user1
   ;;
   restart)
      echo "Re-starting the WSO2 Server ..."
      su -c "${restartcmd}" user1
   ;;
   stop)
      echo "Stopping the WSO2 Server ..."
      su -c "${stopcmd}" user1
   ;;
   *)
      echo "Usage: $0 {start|stop|restart}"
   exit 1
   esac

   In the above script, the server is started as a user by the name user1 rather than the root user. For example, su -c "${startcmd}" user1 

2. Add the script to /etc/init.d/ directory.

   If you want to keep the scripts in a location other than /etc/init.d/ folder, you can add a symbolic link to the script in /etc/init.d/ and keep the actual script in a separate location. Say your script name is prodserver and it is in /opt/WSO2/ folder, then the commands for adding a link to /etc/init.d/ is as follows:

   • Make executable: sudo chmod a+x /opt/WSO2/prodserver

   • Add a link to /etc/init.d/: sudo ln -snf /opt/WSO2/prodserver /etc/init.d/prodserver

3. Install the startup script to respective runlevels using the update-rc.d  command. For example, give the following command for the sample script shown in step1:

   sudo update-rc.d prodserver defaults 

   
   The defaults option in the above command makes the service to start in runlevels 2, 3, 4 and 5 and to stop in runlevels 0,1 and 6.

   A runlevel is a mode of operation in Linux (or any Unix-style operating system). There are several runlevels in a Linux server and each of these runlevels is represented by a single digit integer. Each runlevel designates a different system configuration and allows access to a different combination of processes.

4. You can now st art, stop and restart the server using service <service name> {start|stop|restart} command. You will be prompted for the password of the user (or root) who was used to start the service.