Tag: linux

Install Spring Boot applications

Make fully executable applications for Unix systems
A fully executable jar can be executed like any other executable binary or it can be registered with init.d or systemd
Gradle configuration:

bootJar {
  launchScript()
}

Installation as a systemd Service

create a script named myapp.service and place it in /etc/systemd/system directory

[Unit]
Description=myapp
After=syslog.target

[Service]
User=myapp
ExecStart=/var/myapp/myapp.jar
SuccessExitStatus=143

[Install]
WantedBy=multi-user.target

Remember to change the Description, User, and ExecStart fields for your application.

To flag the application to start automatically on system boot, use the following command:

systemctl enable myapp.service

References
https://docs.spring.io/spring-boot/docs/current/reference/html/deployment-install.html
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/sect-managing_services_with_systemd-unit_files
https://tecadmin.net/setup-autorun-python-script-using-systemd/
https://www.raspberrypi-spy.co.uk/2015/10/how-to-autorun-a-python-script-on-boot-using-systemd/

Which application is using a specific port in Linux

$ lsof -i :8080

COMMAND   PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
java    10165 mkyong   52u  IPv6 191544      0t0  TCP *:http-alt (LISTEN)
$ ps -ef | grep 10165

mkyong   10165  4364  1 11:58 ?        00:00:20 /opt/jdk/jdk1.8.0_66/jre/bin/java
//...
-Djava.endorsed.dirs=/home/mkyong/software/apache-tomcat-8.0.30/endorsed
-classpath /home/mkyong/software/apache-tomcat-8.0.30/bin/bootstrap.jar:
/home/mkyong/software/apache-tomcat-8.0.30/bin/tomcat-juli.jar
-Dcatalina.base=/home/mkyong/.IntelliJIdea15/system/tomcat/Unnamed_hc_2
-Dcatalina.home=/home/mkyong/software/apache-tomcat-8.

0.30
-Djava.io.tmpdir=/home/mkyong/software/apache-tomcat-8.0.30
/temp org.apache.catalina.startup.Bootstrap start

References
https://www.mkyong.com/linux/linux-which-application-is-using-port-8080/