Linux Launch java program on startup (EC2 instance)

Question

my server program needs to be launched on the startup of an EC2 instance. At the minute im just launching it from my SSH with the following commands:

 java -         


        

Answer 1

Add ampersand(symbol '&') at the end of the command. For example, in your case, java -jar ~/DocumentManager/DocumentServer-0.2.jar &

Old question, but my answer might be helpful for people who look in future.

Answer 2

It's possible you can create a script java_server_launch.sh like this:

 #! /usr/bin/sh

    PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin
    JAVA=/usr/bin/java
    MY_SERVER=/home/your_username/DocumentManager/DocumentServer-0.2.jar
    USER=your_username
    /bin/su - $USER -c "$JAVA -jar $MY_SERVER &"

Put your script under /etc/init.d directory, and then use the command:

update-rc.d java_server_launch.sh defaults

more on update-rc.d command by using man update-rc.d.

Hope this help.

Regards.