Install Java services as daemons

To start any java application is enough to run one using java virtual machine:

$ java -jar tcp-server.jar

But in such case the java process has got stdout, stderr, stdin associated with termital where application has been started. And if terminal will be closed all running processes will be terminated too. To run process in background without any terminal the process should be demonized. Also all demonized processes must have convenient tools to start and to stop and can handle any signal to that process.

To manage Java apps on Unix we offer to use supervisor runit. There are all necessary files to set up and turn on supervisor in distributed directory. Just copy directory runit/etc to root (/) of your server’s filesystem:

# cp -a dist/runit/etc /

Then place dirs api-server, sms-server, tcp-server to /home/java/ by copying:

$ cp -a dist/sms-server /home/java/
$ cp -a dist/api-server /home/java/
$ cp -a dist/tcp-server /home/java/

How to manage services

The following services use runit:

  • sms-server.jar
  • tcp-server.jar
  • api-server.jar
  • mysqld

Here are the simplest commands to manage services

# sv start api-server

Another possible way:

# sv u api-server

In Unix system V style

# /etc/init.d/api-server start

Here are how to stop service similar to start:

# sv stop api-server

Also there are possible ways:

# sv d api-server

In Unix style

# /etc/init.d/api-server stop

Send signal USR1 to process

# sv 1 mysql

Process may going to reload its configuration when receiving such signal if it is implemented (mysql has got such functionality).

Another useful commands are:

# sv t api-server

This command is sending TERM signal to process.
How to get status of process:

# sv s api-server

Note. To work with tcp-server using sv do specify name navixyserver instead tcp-server, thus the command above looks like

# sv u navixyserver

Writing logs

In addition to advantages above the supervisor logging stdout and stderr into a file. In our case all logs write to /var/log/nameservice/current and automatic rotate.

More information about supervisor runit can be found on

If you have more questions please contact our support team

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