start ElasticSearch multiple instances

gistfile1.sh

#!/bin/bash
ip="`/sbin/ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}'`"

for ((i=0; i<$1; i++)); do
  hport=$(expr 21000 + $i)
  tport=$(expr 22000 + $i)
  name=$ip+$i
  ../bin/elasticsearch -Des.cluster.name=music-es-dev -Des.multicast.enabled=true -Des.http.port=$hport -Des.transport.tcp.port=$tport -Des.index.number_of_shards=10 -Des.index.number_of_replicas=4 -Des.node.name=$name
done