Kibana upgrade failed - Error: [config validation of [elasticsearch].preserveHost]: definition for this key is missing

Elastic Stack Kibana
1

I have upgraded kibana from 7.17 to 8.0.1 .Im getting the below error .
Error: [config validation of [elasticsearch].preserveHost]: definition for this key is missing

image
image1752×262 18 KB

Could you please help me ?

Thanks

2

Please don't post images of text as they are hard to read, may not display correctly for everyone, and are not searchable.

Instead, paste the text and format it with </> icon or pairs of triple backticks (```), and check the preview window to make sure it's properly formatted before posting it. This makes it more likely that your question will receive a useful answer.

It would be great if you could update your post to solve this.

3 
root@logsdev:/etc/kibana# /usr/share/kibana/bin/kibana --allow-root
[2024-06-07T13:06:18.026+01:00][INFO ][plugins-service] Plugin "metricsEntities" is disabled.
[2024-06-07T13:06:18.079+01:00][FATAL][root] Error: [config validation of [elasticsearch].preserveHost]: definition for this key is missing
    at ensureValidConfiguration (/usr/share/kibana/src/core/server/config/ensure_valid_configuration.js:25:11)
    at Server.preboot (/usr/share/kibana/src/core/server/server.js:160:5)
    at Root.preboot (/usr/share/kibana/src/core/server/root/index.js:48:14)
    at bootstrap (/usr/share/kibana/src/core/server/bootstrap.js:99:9)
    at Command.<anonymous> (/usr/share/kibana/src/cli/serve/serve.js:216:5)

 FATAL  Error: [config validation of [elasticsearch].preserveHost]: definition for this key is missing
4

Look at Kibana 8.0.0-beta1 | Kibana Guide [8.14] | Elastic

Some of the so/server/es settings have been removed. If your configuration uses the following settings, Kibana fails to start:

  • savedObjects.indexCheckTimeout
  • server.xsrf.token
  • elasticsearch.preserveHost
  • elasticsearch.startupTimeout

Some comments:

  • Don't use a 8.0 version of the stack. We now have 8.13.4.
  • You should have used the upgrade assistant before upgrading. Did you?

This guide explains how to upgrade: Upgrade Kibana | Kibana Guide [8.14] | Elastic

5

yes i have used upgrade assistant and upgraded elasticsearch v.8.0.1 successfully .

Is there any issue with kibana 8.0.1?

Could you please check the below logging format :

logging.root.level: debug

logging:
appenders:
file:
type: file
fileName: /var/log/kibana/kibana.log
layout:
type: pattern
root:
appenders:
- default
- file

I am getting the error while using the layout type as pattern.

Could you please advise on this?

6

Yes. And we are now on 8.14.1. So lot of things have been fixed since then.

I think it's another question and that the original one is solved, right?
If so, please open a new discussion and share what you did exactly, what are the logs... And please read this about how to format.