# Logstash client authentication issue

**URL:** https://discuss.elastic.co/t/logstash-client-authentication-issue/354452
**Category:** Logstash
**Created:** [February 29, 2024, 2:22pm UTC](https://discuss.elastic.co/t/logstash-client-authentication-issue/354452 "2024-02-29T14:22:45Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![mamoon2024](https://avatars.discourse-cdn.com/v4/letter/m/ee59a6/32.png) [@mamoon2024](https://discuss.elastic.co/u/mamoon2024)
#### Post date: [February 29, 2024, 2:22pm UTC](https://discuss.elastic.co/t/logstash-client-authentication-issue/354452/1 "2024-02-29T14:22:45Z")

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```auto
Hi
I am trying to Collect logs from OCI Logging into Logstash using OCI Streaming as a Kafka server, I am getting an authentication error, this is log for your reference, please advise about this issue as I am new to logstash

[[main]<kafka] AbstractLogin - Successfully logged in.
[INFO] 2024-02-29 12:51:04.875 [[main]<kafka] AppInfoParser - Kafka version: 3.4.1
[INFO] 2024-02-29 12:51:04.875 [[main]<kafka] AppInfoParser - Kafka commitId: 8a516edc2755df89
[INFO] 2024-02-29 12:51:04.875 [[main]<kafka] AppInfoParser - Kafka startTimeMs: 1709211064873
[INFO] 2024-02-29 12:51:04.878 [[main]<kafka] KafkaConsumer - [Consumer clientId=logstash-0, groupId=logstash] Subscribed to topic(s): apps-nonpord-dev-private1-logs
[INFO] 2024-02-29 12:51:05.645 [kafka-input-worker-logstash-0] Selector - [Consumer clientId=logstash-0, groupId=logstash] Failed authentication with cell-1.streaming.me-jeddah-1.oci.oraclecloud.com/192.29.227.128 (channelId=-1) (Authentication failed)
[INFO] 2024-02-29 12:51:05.648 [kafka-input-worker-logstash-0] NetworkClient - [Consumer clientId=logstash-0, groupId=logstash] Node -1 disconnected.
[ERROR] 2024-02-29 12:51:05.649 [kafka-input-worker-logstash-0] NetworkClient - [Consumer clientId=logstash-0, groupId=logstash] Connection to node -1 (cell-1.streaming.me-jeddah-1.oci.oraclecloud.com/192.29.227.128:9092) failed authentication due to: Authentication failed
[WARN] 2024-02-29 12:51:05.650 [kafka-input-worker-logstash-0] NetworkClient - [Consumer clientId=logstash-0, groupId=logstash] Bootstrap broker cell-1.streaming.me-jeddah-1.oci.oraclecloud.com:9092 (id: -1 rack: null) disconnected
[ERROR] 2024-02-29 12:51:05.652 [kafka-input-worker-logstash-0] kafka - Unable to poll Kafka consumer {:kafka_error_message=>#<Java::OrgApacheKafkaCommonErrors::SaslAuthenticationException: Authentication failed>, :cause=>nil}
[ERROR] 2024-02-29 12:51:06.652 [kafka-input-worker-logstash-0] kafka - Unable to poll Kafka consumer {:kafka_error_message=>#<Java::OrgApacheKafkaCommonErrors::SaslAuthenticationException: Authentication failed>, :cause=>nil}
[INFO] 2024-02-29 12:51:07.655 [kafka-input-worker-logstash-0] ConsumerCoordinator - [Consumer clientId=logstash-0, groupId=logstash] FindCoordinator request hit fatal exception
org.apache.kafka.common.errors.SaslAuthenticationException: Authentication 

```

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<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: [March 28, 2024, 2:23pm UTC](https://discuss.elastic.co/t/logstash-client-authentication-issue/354452/2 "2024-03-28T14:23:01Z")

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