grafana/packaging/deb/systemd/grafana-server.service

[Unit]
Description=Starts and stops a single grafana instance on this system
Documentation=http://docs.grafana.org
Wants=network-online.target
After=network-online.target

[Service]
EnvironmentFile=/etc/default/grafana-server
User=grafana
Group=grafana
Type=simple
Restart=on-failure
WorkingDirectory=/usr/share/grafana
ExecStart=/usr/sbin/grafana-server                                \
                            --config=${CONF_FILE}                 \
                            --pidfile=${PID_FILE}                 \
                            cfg:default.paths.logs=${LOG_DIR}     \
                            cfg:default.paths.data=${DATA_DIR}    \
                            cfg:default.paths.plugins=${PLUGINS_DIR}
LimitNOFILE=10000
TimeoutStopSec=20
UMask=0027

[Install]
WantedBy=multi-user.target