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Run Your Java App as a Service on Ubuntu

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Run Your Java App as a Service on Ubuntu

Bring your JAR file to Ubuntu as a service using this example service wrapper. See how to make it work, including automatic starts and logging tips.

· Java Zone ·
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Say you have a JAR file and you need to run it as a service. Additionally, you want it to start automatically if/when system restarts.

Ubuntu has a built-in mechanism to create custom services, enabling them to get started at system boot time and start/stop them as a service. In this post, I am going to share a simple and elegant way to create a service wrapper for your JAR file so you can run it as a service. Here we go.

Step 1: Create a Service

sudo vim /etc/systemd/system/my-webapp.service

Copy/paste the following into the file /etc/systemd/system/my-webapp.service:

Description=My Webapp Java REST Service
# The configuration file application.properties should be here:

#change this to your workspace

#path to executable. 
#executable is a bash script which calls jar file



Step 2: Create a Bash Script to Call Your Service

Here’s the bash script that calls your JAR file: my-webapp

sudo /usr/bin/java -jar my-webapp-1.0-SNAPSHOT.jar server config.yml

Don't forget to give your script execute permission: sudo chmod u+x my-webapp

Step 3: Start the Service

sudo systemctl daemon-reload
sudo systemctl enable my-webapp.service
sudo systemctl start my-webapp
sudo systemctl status my-webapp

Step 4: Set Up Logging

First, run: sudo journalctl --unit=my-webapp . See real-time logs by using the -f option.

If you want to trim them, use -n <# of lines> to view the specified number of lines of the log:

sudo journalctl -f -n 1000 -u my-webapp

Tail the live log using the -f option:

sudo journalctl -f -u my-webapp

Stop the service by using:

sudo systemctl stop my-webapp

That's it! Enjoy and show your support if you like it. Thanks!

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services ,java ,deployment ,ubuntu ,jar

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