gistfile1.sh

# Start two nodes (run bin/elasticsearch -f twice) and run:

curl -XPOST localhost:9200/test -d '{
    "settings" : {
        "number_of_shards" : 3
    }
}'

# Run cluster state, under routing_nodes element, you will see the shards allocated on each node
curl localhost:9200/_cluster/state?pretty=1

# Start another node (another bin/elasticsearch -f)

# Run cluster state, under routing_nodes element, you will see the shards allocated on each node
curl localhost:9200/_cluster/state?pretty=1