2018-09-25T14:21:41.821+0800 ERROR logstash/async.go:252 Failed to publish events caused by: write tcp 127.0.0.1:45718->127.0.0.1:5044: write: connection reset by peer
2018-09-25T14:21:42.821+0800 ERROR pipeline/output.go:109 Failed to publish events: write tcp 127.0.0.1:45718->127.0.0.1:5044: write: connection reset by peer

filebeat往logstash寫日誌，偶爾會報這個錯，但是寫入正常，需要繼續跟蹤問題

1）當filebeat從log裡讀取寫到logstash時候不會報錯
2）用postman提交日誌，往*.log裡寫入時候，filebeat會讀取然後向logstash寫，這個時候會偶爾報錯

查詢有說是logstash那邊配置，比如grok的問題…待驗證