# Filebeat cannot connect to kafka with SASL\_PLAINTEXT

**URL:** <https://discuss.elastic.co/t/filebeat-cannot-connect-to-kafka-with-sasl-plaintext/330501>\
**Category:** Beats\
**Tags:** filebeat\
**Created:** [April 21, 2023, 8:32am UTC](https://discuss.elastic.co/t/filebeat-cannot-connect-to-kafka-with-sasl-plaintext/330501 "2023-04-21T08:32:03Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![sankooc](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sankooc/32/120067_2.png) [@sankooc](https://discuss.elastic.co/u/sankooc)\
**Post date:** [April 21, 2023, 8:32am UTC](https://discuss.elastic.co/t/filebeat-cannot-connect-to-kafka-with-sasl-plaintext/330501/1 "2023-04-21T08:32:03Z")

</div>

Hi  
the problem occurs when collect data from kafka then send to logstash.  
the filebeat failed to connect kafka

kafka version: 2.5.1  
filebeat version: 8.6.2

kafka server config

```auto
security.inter.broker.protocol=SASL_PLAINTEXT
sasl.mechanism.inter.broker.protocol=SCRAM-SHA-256
sasl.enabled.mechanisms=SCRAM-SHA-256
allow.everyone.if.no.acl.found=false
super.users=User:admin
authorizer.class.name=kafka.security.auth.SimpleAclAuthorizer
listeners=SASL_PLAINTEXT://0.0.0.0:8080
advertised.listeners=SASL_PLAINTEXT://0.0.0.0:8080
socket.send.buffer.bytes=102400
socket.receive.buffer.bytes=102400
socket.request.max.bytes=104857600

```

filebeat config

```auto

filebeat.inputs:
- type: kafka
  tags: ["kafka-client"]
  enabled: true
  hosts:
    - kafka1:8080
  topics: ["error-test"]
  group_id: test-api
  initial_offset: "oldest"
  sasl.mechanism: SCRAM-SHA-256
  ssl.enabled: true
  username: testuser
  password: xxxx

```

when startup filebeat print error log `client has run out of available brokers to talk to (Is your cluster reachable?`

kafka server also print exception

```auto
[2023-04-21 15:15:17,413] WARN [SocketServer brokerId=0] Unexpected error from /192.168.0.9; closing connection (org.apache.kafka.common.network.Selector)
org.apache.kafka.common.network.InvalidReceiveException: Invalid receive (size = 369295616 larger than 524288)
	at org.apache.kafka.common.network.NetworkReceive.readFrom(NetworkReceive.java:105)
	at org.apache.kafka.common.security.authenticator.SaslServerAuthenticator.authenticate(SaslServerAuthenticator.java:246)
	at org.apache.kafka.common.network.KafkaChannel.prepare(KafkaChannel.java:176)
	at org.apache.kafka.common.network.Selector.pollSelectionKeys(Selector.java:547)
	at org.apache.kafka.common.network.Selector.poll(Selector.java:485)
	at kafka.network.Processor.poll(SocketServer.scala:861)
	at kafka.network.Processor.run(SocketServer.scala:760)
	at java.lang.Thread.run(Thread.java:750

```

similar filebeat config to connect no authentication kafka work fine

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [May 19, 2023, 10:32am UTC](https://discuss.elastic.co/t/filebeat-cannot-connect-to-kafka-with-sasl-plaintext/330501/2 "2023-05-19T10:32:42Z")

</div>

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