How to set up jar application startup on CentOS7

Pitfalls encountered during project deployment

When deploying Zhihudemo, I did not use automated deployment tools such as Jenkins. I encountered a pit when deploying the jar package project in Linux CentOS. When I remotely connected to the server through xshell and used the "java -jar" command in the system to start the jar package, the output log would occupy the current terminal page. If I closed the terminal window, the entire Java program would stop. To solve this problem, I could set the jar package as a background service, and further set it as a system service and boot automatically.

1. Write a startup script

The script can be stored anywhere. In this example, it is stored in /etc/rc.d/init.d/file-preview-server.sh

# !/bin/bash
# program
# file preview server start 

export JAVA_HOME=/opt/jdk8
export JRE=$JAVA_HOME/jre
export CLASSPATH=$JAVA_HOME/lib:$JRE/lib:.
export PATH=$JAVA_HOME/bin/:$JRE/bin:$PATH
nohup java -jar /root/file-preview-server/file-preview-server.jar > /root/file-preview-server/stdout.log &

2. Add execution permissions to the /etc/rc.d/init.d/file-preview-server.sh file

chmod +x /etc/rc.d/init.d/file-preview-server.sh

3. Add execution permissions to the /etc/rc.d/rc.local file

chmod +x /etc/rc.d/rc.local

4. Edit /etc/rc.d/rc.local file

Add the following statement at the end of the file

su - root -c '/etc/rc.d/init.d/file-preview-server.sh'

Now, you’re done!

The above is the full content of this article. I hope it will be helpful for everyone’s study. I also hope that everyone will support 123WORDPRESS.COM.