node-systemd

Challenges...

1. run Node.js services in background
2. automatically restart them if they are crashing
3. collect output/error logs for analyzing them later or watching them in real time.

SystemD

Handles and processes long running background tasks/services.

SystemD is an init system.

Server.js

Make server.js an executable and create a symlink.

Note: symlink path must be absolute.

chmod +x server.js
ln /home/yoda/Github/node-systemd/app/services/hello_moto/server.js /app/services/hello_moto/server.js

ln /home/yoda/Github/node-systemd/etc/systemd/system/hello_moto.service /etc/systemd/system/hello_moto.service

Enable and Start the Service

systemctl enable hello_moto.service

systemctl start hello_moto.service

Troubleshooting

If troublshooting make sure to reload the daemon.

systemctl daemon-reload

To view all output logs use the following command.

sudo journalctl -u hello_moto.service
# For real time logs just add -f argument
sudo journalctl -fu hello_moto.service