Your .service file should look like this:
[Unit]
Description=Spark service
[Service]
ExecStart=/path/to/spark/sbin/start-all.sh
[Install]
WantedBy=multi-user.target
Now do a few more steps to enable and use the .service file:
Place it in /lib/systemd/system folder with say a name of myfirst.service
Make that your script executable with:
chmod u+x /path/to/spark/sbin/start-all.sh
Start it:
sudo systemctl start myfirst
Enable it to run at boot:
sudo systemctl enable myfirst
Stop it:
sudo systemctl stop myfirst
Notes:
You don’t need to launch Spark with sudo in your service, as the default service user is already root.
Look at the links below for more systemd options.
UPDATE
Now what we have above is just rudimentary, here is a complete setup for spark:
[Unit]
Description=Apache Spark Master and Slave Servers
After=network.target
After=systemd-user-sessions.service
After=network-online.target
[Service]
User=spark
Type=forking
ExecStart=/opt/spark-1.6.1-bin-hadoop2.6/sbin/start-all.sh
ExecStop=/opt/spark-1.6.1-bin-hadoop2.6/sbin/stop-all.sh
TimeoutSec=30
Restart=on-failure
RestartSec=30
StartLimitInterval=350
StartLimitBurst=10
[Install]
WantedBy=multi-user.target
To setup the service:
sudo systemctl start spark.service
sudo systemctl stop spark.service
sudo systemctl enable spark.service