Upgrade ES to 6.8 and Graylog to 4.0

Elastic Stack Elasticsearch
1

I’m currently using graylog 3.3 and I’d like to upgrade to version 4.0.
It looks like I need to upgrade Elasticsearch first ( currently using version 5.6).
I’ve done research online but I can’t seem to find how to re-index my indices. Any help is appreciated.

2021-10-12 09_59_40-Graylog - Index Set - Default index set
2021-10-12 09_59_40-Graylog - Index Set - Default index set1328×138 9.45 KB

2

Welcome to our community! :smiley:

You might be better off running up a newer cluster and then doing a remote reindex into it. Is that possible?

3

If you upgrade from Elasticsearch 5.6 to 6.8 and do not have indices created in earlier versions you should not need to reindex your data.

5

Thank for your reply, this is my problem I've version 2.4 indices.

java.lang.IllegalStateException: The index [[graylog_644/cp172I2ERtexC-UVsEEKsg]] was created with version [2.4.6] but the minimum compatible version is [5.0.0]. It should be re-indexed in Elasticsearch 5.x before upgrading to 6.8.19

6

Thank for your reply, this is my problem I've version 2.4 indices.

java.lang.IllegalStateException: The index [[graylog_644/cp172I2ERtexC-UVsEEKsg]] was created with version [2.4.6] but the minimum compatible version is [5.0.0]. It should be re-indexed in Elasticsearch 5.x before upgrading to 6.8.19.

7

Then you need to reindex them in the current version prior to upgrading. How to best do that probably depends on GrayLog, which I am not familiar with.

8

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