cluster_health.rb

require 'rubygems'
require 'rest-client'
require 'yaml'

config =  YAML::load(File.read('/usr/lib/elasticsearch/config/elasticsearch.yml'))

config['discovery']['zen']['ping']['unicast']['hosts'].split(', ').collect{|h| h.sub(':9300', '') }.each do |host|
  puts RestClient.get("http://#{host}:9200/_cluster/health").inspect
end

gistfile1.yml

path:
  work: /var/lib/elasticsearch/work
  logs: /var/log/elasticsearch
  data: /var/lib/elasticsearch/data

cluster:
  name: mycluster


discovery:
  zen:
    ping:
      multicast:
        enabled: false
      unicast:
        enabled: true
        hosts: host1:9300, host2:9300, host3:9300, host4:9300, host5:9300

index:
  number_of_shards: 6
  number_of_replicas: 1