CODEWITHSUNDEEP
javaspringspring-bootubuntujar
Thang Tran
Thang Tran

Reputation: 111

Why does Spring Boot backend JAR file run only for a short while on Ubuntu? How to make it run as a service?

I wrote a Spring Boot RESTful API backend, compiled it to backend.jar file and ran it on Ubuntu (EC2 of AWS) by command java -jar backend.jar . It can serve requests well, but it seems that it runs only for a short while and then disappears, so the following requests fail to be served. I can rerun java -jar backend.jar but it works only for a short while.

How to make the backend.jar permanent like a service? (I am new to server administration)

Upvotes: 0

Views: 276

Answers (1)

Vy Do
Vy Do

Reputation: 52556

Create a user for your service

$ sudo useradd thangtran
$ sudo passwd thangtran
$ sudo chown thangtran:thangtran backend.jar
$ sudo chmod 500 backend.jar

Solution 1: Use systemd (recommended). In directory /etc/systemd/system , create file backend.service has content

[Unit]
Description=A Spring Boot application
After=syslog.target

[Service]
User=thangtran
ExecStart=/path/to/backend.jar SuccessExitStatus=143 

[Install] 
WantedBy=multi-user.target

See more at https://viblo.asia/p/su-dung-systemd-de-chinh-sua-service-linux-m68Z0PJNZkG

Solution 2: System V init

sudo ln -s /path/to/backend.jar /etc/init.d/your-app
$ sudo service your-app start

Log at /var/log/backend.log Application's process id tracked at /var/run/backend/backend.pid

Upvotes: 1

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