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首页 > 解决方案 > Fluentd 无法与 Kafka 代理建立连接：Errno::ECONNRESET: Connection reset by peer

logging - Fluentd 无法与 Kafka 代理建立连接：Errno::ECONNRESET: Connection reset by peer

问题描述

我已经配置了一个fluentd边车容器来将日志发送到kafka.

这是我的fluent.conf文件：

<source>
  @type forward
  bind 127.0.0.1
  port 24224
</source>

<match log.default>
@type kafka2

  # list of seed brokers
  brokers node1:9092, node2:9092, node3:9092
  use_event_time true

  # buffer settings
  buffer_type file
  buffer_path /var/log/td-agent/buffer/kafka
  flush_interval 3s

  # topic settings
  default_topic app_logs

  # data type settings
  <format>
    @type json
  </format>

  # producer settings
  max_send_retries 1
  required_acks -1

  #deubg log
  @log_level debug
</match>

fluentd可以从运行 sidecar 容器的 pod 访问代理主机。但是，sidecar 容器无法连接到代理。它返回以下日志：

2020-10-23 11:41:51 +0000 [info]: starting fluentd-1.10.4 pid=8 ruby="2.5.8"
2020-10-23 11:41:51 +0000 [info]: spawn command to main:  cmdline=["/usr/bin/ruby", "-Eascii-8bit:ascii-8bit", "/usr/bin/fluentd", "-c", "/fluentd/etc/fluent.conf", "-p", "/fluentd/plugins", "--under-supervisor"]
2020-10-23 11:41:55 +0000 [info]: adding match pattern="log.default" type="kafka2"
2020-10-23 11:41:56 +0000 [info]: #0 brokers has been set: ["node1:9092", "node2:9092", "node3:9092"]
2020-10-23 11:41:56 +0000 [info]: adding source type="forward"
2020-10-23 11:41:56 +0000 [info]: #0 starting fluentd worker pid=22 ppid=8 worker=0
2020-10-23 11:41:56 +0000 [debug]: #0 buffer started instance=47608408649900 stage_size=0 queue_size=0
2020-10-23 11:41:56 +0000 [info]: #0 initialized kafka producer: fluentd
2020-10-23 11:41:56 +0000 [info]: #0 listening port port=24224 bind="127.0.0.1"
2020-10-23 11:41:56 +0000 [info]: #0 fluentd worker is now running worker=0
2020-10-23 11:41:57 +0000 [debug]: #0 flush_thread actually running
2020-10-23 11:41:57 +0000 [debug]: #0 enqueue_thread actually running
2020-10-23 11:43:02 +0000 [warn]: #0 Send exception occurred: Could not connect to any of the seed brokers:
- kafka://node1:9092: Connection error Errno::ECONNRESET: Connection reset by peer
- kafka://node2:9092: Connection error Errno::ECONNRESET: Connection reset by peer
- kafka://node3:9092: Connection error Errno::ECONNRESET: Connection reset by peer
2020-10-23 11:43:02 +0000 [warn]: #0 Exception Backtrace : /usr/lib/ruby/gems/2.5.0/gems/ruby-kafka-1.3.0/lib/kafka/cluster.rb:448:in `fetch_cluster_info'

如何摆脱这个问题？这可能是代理节点方面的问题吗？

标签： loggingkubernetesapache-kafkafluentd

解决方案

在 fluentd 主机上，尝试使用https://github.com/edenhill/kafkacat调试 Kafka 连接/访问。我确定这是网络/防火墙问题，而不是流利的。

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