[2018-06-24T15:37:31,882][WARN ][logstash.outputs.elasticsearch] Could not index event to Elasticsearch. {:status=>400, :action=>["index", {:_id=>nil, :_index=>"metricbeat-2018.06.24", :_type=>"doc", :_routing=>nil}, #<LogStash::Event:0x61f2a2e>], :response=>{"index"=>{"_index"=>"metricbeat-2018.06.24", "_type"=>"doc", "_id"=>"VwNxMmQBszlXPc9pbfOr", "status"=>400, "error"=>{"type"=>"mapper_parsing_exception", "reason"=>"object mapping for [host] tried to parse field [host] as object, but found a concrete value"}}}}
logstash [2018-06-24T15:36:58,865][WARN ][logstash.outputs.elasticsearch] Could not index event to Elasticsearch. {:status=>400, :action=>["index", {:_id=>nil, :_index=>"metricbeat-2018.06.24", :_type=>"doc", :_routing=>nil}, #<LogStash::Event:0x23baffeb>], :response=>{"index"=>{"_index"=>"metricbeat-2018.06.24", "_type"=>"doc", "_id"=>"pQNwMmQBszlXPc9p7PKU", "status"=>400, "error"=>{"type"=>"mapper_parsing_exception", "reason"=>"object mapping for [host] tried to parse field [host] as object, but found a concrete value"}}}}