# Elastic search v 7.17.10 : x-pack-SSL authentication

**URL:** <https://discuss.elastic.co/t/elastic-search-v-7-17-10-x-pack-ssl-authentication/345172>\
**Category:** Kibana\
**Tags:** elastic-stack-security, elastic-stack-alerting\
**Created:** [October 17, 2023, 7:43am UTC](https://discuss.elastic.co/t/elastic-search-v-7-17-10-x-pack-ssl-authentication/345172 "2023-10-17T07:43:17Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Deepika\_Gupta](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/deepika_gupta/32/123300_2.png) [@Deepika\_Gupta](https://discuss.elastic.co/u/Deepika_Gupta)\
**Post date:** [October 17, 2023, 7:43am UTC](https://discuss.elastic.co/t/elastic-search-v-7-17-10-x-pack-ssl-authentication/345172/1 "2023-10-17T07:43:17Z")

</div>

Hi Team,

In Elasticsearch, we have a cluster node, enabling x-pack,  
**On Master node** : x-pack enabled successfully, **certification** authorities successfully  
**On a Slave node** : x-pack enabled successfully, but **certification** authorities is not successfully.

getting below errors.

**error 1:**  
exception caught on transport layer [Netty4TcpChannel{localAddress=/10.19.19.124:48024, remoteAddress=localhost/10.19.19.123:9300, profile=default}], closing connection  
io.netty.handler.codec.DecoderException: javax.net.ssl.SSLHandshakeException: Received fatal alert: bad\_certificate  
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:477) ~[netty-codec-4.1.66.Final.jar:4.1.66.Final]  
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(Byte

**error 2:**  
or":{"root\_cause":[{"type":"security\_exception","reason":"unable to authenticate user [elastic] for REST request [/\_cat/nodes?v]","header":{"WWW-Authenticate":["Bearer realm="security"","ApiKey","Basic realm="security" charset="UTF-8""]}}],"type":"security\_exception","reason":"unable to authenticate user [elastic] for REST request [/\_cat/nodes?v]","header":{"WWW-Authenticate":["Bearer realm="security"","ApiKey","Basic realm="security" charset="UTF-8""]}},"status":401}r

I appreciate, your support on this issue.

Regards,

---

<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:** [November 14, 2023, 7:44am UTC](https://discuss.elastic.co/t/elastic-search-v-7-17-10-x-pack-ssl-authentication/345172/2 "2023-11-14T07:44:01Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.