# After upgrading logstash to 6.6, I get failed authentication due to: SSL handshake failed

**URL:** <https://discuss.elastic.co/t/after-upgrading-logstash-to-6-6-i-get-failed-authentication-due-to-ssl-handshake-failed/238052>\
**Category:** Logstash\
**Created:** [June 22, 2020, 9:27am UTC](https://discuss.elastic.co/t/after-upgrading-logstash-to-6-6-i-get-failed-authentication-due-to-ssl-handshake-failed/238052 "2020-06-22T09:27:58Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Zalman\_Goldstein1](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/zalman_goldstein1/32/70799_2.png) [@Zalman\_Goldstein1](https://discuss.elastic.co/u/Zalman_Goldstein1)\
**Post date:** [June 22, 2020, 9:27am UTC](https://discuss.elastic.co/t/after-upgrading-logstash-to-6-6-i-get-failed-authentication-due-to-ssl-handshake-failed/238052/1 "2020-06-22T09:27:58Z")

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we have kafka\_2.12-2.3.0, and use logstash.  
after upgrading to logstash version 6.6, and plugin 7.3.2 logstash-output-kafka, we got an error of

`The setting ssl in plugin kafka is obsolete and is no longer available. Use security_protocol`

we changed are settings to SSL. sending with plain text works, but with SSL, I get an error of :  
`compute.internal/172.30.7.160:9093) failed authentication due to: SSL handshake failed`  
when sending it to the Kafka machine with logstash.

this is the Kafka SSL server.properties:

```auto
#security.inter.broker.protocol=SSL
ssl.keystore.location=/opt/Kafka/kafka_2.12-2.3.0/bin/server.keystore.jks
ssl.keystore.password= *********
ssl.key.password= *********
ssl.truststore.location=/opt/Kafka/kafka_2.12-2.3.0/bin/server.truststore.jks
ssl.truststore.password= *********
ssl.endpoint.identification.algorithm=

```

---

<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:** [July 20, 2020, 9:28am UTC](https://discuss.elastic.co/t/after-upgrading-logstash-to-6-6-i-get-failed-authentication-due-to-ssl-handshake-failed/238052/2 "2020-07-20T09:28:03Z")

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