filebeats启动报错：[publisher_pipeline_output] pipeline/output.go:155 Failed to connect to backoff

本人初学小白，在启动filebeats时出现ERROR，显示[publisher_pipeline_output] pipeline/output.go:155 Failed to connect to backoff(async(tcp://localhost:5044)): dial tcp 127.0.0.1:5044: connect: connection refused。
 
logstash的配置文件和filebeats的配置文件如下所示，特向各位前辈请教学习。
 
filebeat.yml文件：

filebeat.inputs:

- type: log

  enabled: true

  backoff: "1s"

  tail_files: false

  paths:

    - /usr/local/temp/log1/*.log



output.logstash:

  enabled: true

  hosts: ["localhost:5044"]

logstash.conf配置文件：

input {

    beats {

        host => "192.168.100.121

[attach]6341[/attach]

"

        port => 5044

    }

}



filter {

    grok {

        match => { "message" => "(?<Date>%{TIMESTAMP_ISO8601:logtime}) %{DATA:thread} %{DATA:level} %{DATA:classpath}" }

    }



    mutate {

        convert => { "response" => "string" }

    }



    date {

        timezone => "Asia/Shanghai"

        match => ["logtime", "yyyy-MM-dd HH:mm:ss,SSS"]

        target => "@timestamp"

    }

}



output {

    elasticsearch {

        hosts => ["127.0.0.1:9200"]

        index => "slog-%{+YYYY.MM.dd}"

    }

}