Which Elasticsearch Node Roles should be connected to Graylog?

[mobk]

Hi : ),

I am creating a new multi node installation which look as follows:

• 3 Graylog Nodes
• 3 Elasticsearch Master Nodes
• 1 Elasticsearch Data Node (I am planning to add more data nodes in the future)

Could you tell me please which elasticsearch hosts I should include in the Graylog configuration file?
Shall I add only elasticsearch master nodes or I should add all nodes (master + data nodes)?

Thank you in advance.

• OS Information: The Graylog/Elasticsearch nodes are running Ubuntu Server 22.04
• Package Version:
  Graylog 4.3
  Elasticsearch 7.10.2

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[m_mlk]

Hi @mobk

welcome to the Community!

I haven’t found any documentation about that while I was setting up our 3x nodes OpenSearch (OS) cluster. WIth that said, our Graylog cluster points to all OS members (master and data roles), and everything works fine.

HTH

[gsmith]

Hello && Welocm @mobk

@mobk

Could you tell me please which elasticsearch hosts I should include in the Graylog configuration file?

In the documentation here
Basically what I did with 6 node cluster 3 ES & 3 GL/Mongo.
This was configure on each graylog node.
.

elasticsearch_hosts = http://10.10.10.10:9200, http://10.10.10.20:9200, http://10.10.10.30:9200

Depending on how the cluster is set up you could use something like this

http://node1:9200,http://user:password@node2:19200,http://user:password@node3:19200

This was only done for ES master nodes since they ingest from Graylogs journal.

Probably a better way would be a load balancer, if you expanding larger then three nodes. It would make this task much easier down the road.