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 -jar ~/DocumentManager/DocumentServer-0.2.jar

I tried adding this to the .bashrc and /etc/rc.local files but they only seem to work when i ssh in.

Anyone know how to make it so an instance of my application is launched when the computer boots?

Thanks,

Ben

Perhaps this helps:Tool for creating a Java daemon service on Linux — Edwin Dalorzo
– Edwin Dalorzo, Commented Aug 4, 2012 at 13:57

TOC · Accepted Answer · 2012-08-04 14:50:50Z

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.

edited Aug 4, 2012 at 14:50

answered Aug 4, 2012 at 14:17

TOC

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7 Comments

Ben Flowers Over a year ago

Hi, I tried that and its not working. I ssh'd in and looked at the processes running and its not there. Do i need to put in a start script somewhere?

TOC Over a year ago

@BenFlowers : hello, yes under /etc/init.d directory

Ben Flowers Over a year ago

Okay so basically i created the java_server_launch.sh file and then ran the commands you said. Is there anything else i need to do? (still not working) thanks for your help btw

TOC Over a year ago

@BenFlowers : I edited my post, by the way you can take a look at /etc/init.d/skeleton file to see how you can use it to meet your need.

Ben Flowers Over a year ago

still not working, its close i can tell!! so my jar file is located at ~/DocumentManager/DocumentServer-0.2.jar and i am sshing in as ubuntu@(amazoninstance). im storing my script.sh file in /etc/init.d and it looks like this: #! /usr/bin/sh PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin JAVA=/usr/bin/java MY_SERVER=~/DocumentManager/DocumentServer-0.2.jar USER=ubuntu /bin/su - $USER -c "$JAVA -jar $MY_SERVER &" and running update-rc.d script.sh defaults any clue what im doing wrong?

|

Rajesh · Accepted Answer · 2015-12-23 13:30:24Z

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.

edited Dec 23, 2015 at 13:30

answered Dec 23, 2015 at 9:34

Rajesh

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Comments

Rahul Babu · Accepted Answer · 2021-02-23 15:53:11Z

0

You can also run your program as a service which automatically run on ec2 container reboot. Below link worked for me:

https://medium.com/@lizlieholleza/run-your-java-application-as-a-service-in-an-ec2-instance-amazon-linux-d7c7b4c0b2f4

answered Feb 23, 2021 at 15:53

Rahul Babu

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