Debian/Upstart files for a Java service

README.md

This is an example for adding native Upstart support to the Debian package for a Java service.

The default and upstart files should both be placed in your debian packaging directory, giving you a final tree that looks something like:

+ debian/
  - control
  - default
  - upstart
  ...

Note that you will have to replace some tokens in the upstart file with your actual service name and JAR path.

default

ENABLED=yes

# options to pass the JVM (-Xms, -Xmx, etc)
JAVA_OPTS=

# options to pass the service
OPTS=

upstart

description "my java service"

start on runlevel [2345]
stop on runlevel [!2345]

# never stop trying to respawn
respawn
respawn limit unlimited

env DEFAULTFILE=/etc/default/myservice

pre-start script
  [ -f $DEFAULTFILE ] && . $DEFAULTFILE

  # don't start unless explicitly enabled in config
  if [ -z "$ENABLED" ] ; then
    stop; exit 0;
  fi
end script

script
  [ -f $DEFAULTFILE ] && . $DEFAULTFILE
  
  exec java $JAVA_OPTS -jar /path/to/myservice.jar $OPTS
end script

# prevent respawning more than once every second
post-stop exec sleep 1