记一次FIlebeat 异常，目前没有深究解决方案，不影响使用。
2020/05/26 06:48:35.384662 metrics.go:34: INFO No non-zero metrics in the last 30s
2020/05/26 06:49:05.384659 metrics.go:34: INFO No non-zero metrics in the last 30s
2020/05/26 06:49:35.384751 metrics.go:34: INFO No non-zero metrics in the last 30s
2020/05/26 06:49:35.436374 log.go:91: INFO Harvester started for file: /opt/apache-tomcat-8.5.6-log-8089/logs/ds-logservice-web/error-s.log
2020/05/26 06:49:40.408966 sync.go:85: ERR Failed to publish events caused by: write tcp 192.168.2.63:57732->192.168.2.61:5044: write: connection reset by peer
2020/05/26 06:49:40.409005 single.go:91: INFO Error publishing events (retrying): write tcp 192.168.2.63:57732->192.168.2.61:5044: write: connection reset by peer
2020/05/26 06:50:05.384693 metrics.go:39: INFO Non-zero metrics in the last 30s: filebeat.harvester.open_files=1 filebeat.harvester.running=1 filebeat.harvester.started=1 libbeat.logstash.call_count.PublishEvents=3 libbeat.logstash.publish.read_bytes=18 libbeat.logstash.publish.write_bytes=1267 libbeat.logstash.publish.write_errors=1 libbeat.logstash.published_and_acked_events=4 libbeat.logstash.published_but_not_acked_events=3 libbeat.publisher.published_events=4 publish.events=6 registrar.states.cleanup=1 registrar.states.update=6 registrar.writes=3
