logstash配置output问题

因为之前是输出到es里的，运行了好几个月了，配置是没问题的。然后最近要改到kafka里，我就只修改了outpt，改为kafka，配置如下：

output {

    stdout { codec => rubydebug }

    kafka {

      bootstrap_servers => "x.x.x.x:9092,x.x.x.x:9092"

      topic_id => "logstashlog"

    }

启动没有报错，但是有几行日志看着很奇怪

[2018-10-24T10:07:51,566][INFO ][logstash.outputs.elasticsearch] Elasticsearch pool URLs updated {:changes=>{:removed=>[], :added=>[http://logstash_system:xxxxxx@x.x.x.x:9200/_xpack

/monitoring/?system_id=logstash&system_api_version=2&interval=1s]}}

[2018-10-24T10:07:51,597][INFO ][logstash.outputs.elasticsearch] Running health check to see if an Elasticsearch connection is working {:healthcheck_url=>http://logstash_system:xxxxxx@x.x.x.x:9200/, :path=>"/"}

[2018-10-24T10:07:52,580][WARN ][logstash.outputs.elasticsearch] Restored connection to ES instance {:url=>#<URI::HTTP URL:http://logstash_system:xxxxxx@x.x.x.x:9200/&gt;}

[2018-10-24T10:07:52,590][INFO ][logstash.outputs.elasticsearch] New Elasticsearch output {:class=>"LogStash::Outputs::ElasticSearch", :hosts=>[#<URI::HTTPURL:http://x.x.x.x:9200&gt;]}

明明没有配置es，为什么还有
[logstash.outputs.elasticsearch]这种日志。。后来我去yml文件里看到了有配置xpack，我把那两行删掉
启动就报错了

[2018-10-24T15:59:29,471][ERROR][logstash.outputs.elasticsearch] Attempted to send a bulk request to elasticsearch, but no there are no living connections in the connection pool. Perhaps Elasticsearch is unreachable or down? {:error_message=>"No Available connections", :class=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::NoConnectionAvailableError", :will_retry_in_seconds=>64}

[2018-10-24T15:59:30,589][INFO ][logstash.outputs.elasticsearch] Running health check to see if an Elasticsearch connection is working {:healthcheck_url=>http://logstash_system:xxxxxx@localhost:9200/, :path=>"/"}

[2018-10-24T15:59:30,840][WARN ][logstash.outputs.elasticsearch] Attempted to resurrect connection to dead ES instance, but got an error. {:url=>#<URI::HTTP:0x3efcebee URL:http://logstash_system:xxxxxx% ... gt%3B, :error_type=>LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError, :error=>"Elasticsearch Unreachable: [http://logstash_system:xxxxxx@localhost:9200/][Manticore::SocketException] 不允许联接 (connect failed)"}

启动时已经指定了配置文件了，救救孩子吧T^T