Supervisor

Supervisor is a process control system that makes it easy to start, stop, and restart your Jiny app.

Install

Supervisor can be installed through package managers on Linux.

Ubuntu

sudo apt-get update
sudo apt-get install supervisor

CentOS and Amazon Linux

sudo yum install supervisor

Fedora

sudo dnf install supervisor

Configure

Each Jiny app on your server should have its own configuration file. For an example Hello project, the configuration file would be located at /etc/supervisor/conf.d/hello.conf

[program:hello]
command=java -jar /home/Jiny/hello/build/lib/hello-all.jar
directory=/home/Jiny/hello/
user=Jiny
stdout_logfile=/var/log/supervisor/%(program_name)-stdout.log
stderr_logfile=/var/log/supervisor/%(program_name)-stderr.log

As specified in our configuration file the Hello project is located in the home folder for the user Jiny. Make sure directory points to the root directory of your project where the Package.swift file is.

The --env production flag will disable verbose logging.

Environment

You can export variables to your Jiny app with supervisor.

environment=PORT=8123

Exported variables can be used in Jiny using Environment.get

String port = System.getenv("PORT")

Start

You can now load and start your app.

supervisorctl reread
supervisorctl add hello
supervisorctl start hello

Note

The add command may have already started your app.