Merge pull request #3 from oleg-z/master

Add elasticsearch indicies check

Author: oleg-z

plugins/elasticsearch/check-es-indicies-status.rb

@@ -0,0 +1,52 @@
+#! /usr/bin/env ruby
+#
+#  check-es-indices-status
+#
+# DESCRIPTION:
+#   This plugin checks the ElasticSearch indices status, using its API.
+#   Works with ES ES 1.4+
+#
+# OUTPUT:
+#   plain text
+#
+# PLATFORMS:
+#   Linux
+#
+# DEPENDENCIES:
+#   gem: sensu-plugin
+#   gem: rest-client
+#
+# USAGE:
+#   #YELLOW
+#
+# NOTES:
+#
+# LICENSE:
+#   Copyright 2015 Alert Logic, Inc
+#   Released under the same terms as Sensu (the MIT license); see LICENSE
+#   for details.
+#
+
+require 'rubygems' if RUBY_VERSION < '1.9.0'
+require 'sensu-plugin/check/cli'
+require 'json'
+require 'open-uri'
+
+class ESIndicesStatus < Sensu::Plugin::Check::CLI
+    def run
+        indicies_status = JSON.parse(open('http://localhost:9200/_cluster/health?level=indices').read)
+        yellow = []
+        red = []
+        indicies_status["indices"].sort_by { |name| name }.each do |name, details|
+            next if details["status"] == "green"
+            yellow << name if details["status"] == "yellow"
+            red << name if details["status"] == "red"
+            puts "Index '#{name}' is not healthy. Status: #{details["status"]}"
+        end
+
+        exit 2 unless red.empty?
+        exit 1 unless yellow.empty?
+        puts "All #{indicies_status["indices"].size} indices are healthy"
+        exit 0
+    end
+end