A linux shell to start cluster services in batches

#!/bin/bash

case $1 in
"start"){
	for i in hadp102 hadp103 hadp104
	do
		echo "************$i****************"
		ssh $i "/opt/module/kafka/bin/kafka-server-start.sh -daemon /opt/module/kafka/config/server.properties"
	done
};;
"start"){
	for i in hadp102 hadp103 hadp104
	do
		echo "************$i****************"
		ssh $i "/opt/module/kafka/bin/kafka-server-start.sh -daemon /opt/module/kafka/config/server.properties"
	done
};;
esac