etc/systemd/system/puma.service

puma.service

[Unit]
Description=Puma HTTP Server
After=network.target

# Uncomment for socket activation (see below)
# Requires=puma.socket

[Service]
# Foreground process (do not use --daemon in ExecStart or config.rb)
Type=simple

# Preferably configure a non-privileged user
User=root
Group=root

# Specify the path to your puma application root
WorkingDirectory=/home/rails/RubyFinanceTracker

# Helpful for debugging socket activation, etc.
# Environment=

# The command to start Puma
# Here we are using a binstub generated via:
# `bundle binstubs puma --path ./sbin`
# in the WorkingDirectory (replace <WD> below)
# You can alternatively use `bundle exec --keep-file-descriptors puma`
# ExecStart=<WD>/sbin/puma -b tcp://0.0.0.0:9292 -b ssl://0.0.0.0:9293?key=key.pem&cert=cert.pem

# Alternatively with a config file (in WorkingDirectory) and
# comparable `bind` directives
ExecStart=/usr/local/rvm/wrappers/ruby-2.3.3/puma -C /home/rails/RubyFinanceTracker/config/puma.rb

# Restart=always

[Install]
WantedBy=multi-user.target