Single graylog cluster with multiple nodes

[eurynome]

Hey Guys!

I am pretty new to Graylog, but trying really hard to understand it.

I have a running graylog with the following setup:

OS: Ubuntu 24 server x64
Graylog: Graylog 6.1.2
Elasticsearch: 7.17.24
MongoDB: 6.0.19

I am currently working with one node that has 4GB of memory:

/etc/default/graylog-server:
GRAYLOG_SERVER_JAVA_OPTS="-Xms4g -Xmx4g -server -XX:+UseG1GC -XX:-OmitStackTraceInFastThrow"

I was wondering if is there any way to add a new node to the same cluster?
I have read some articles about multiple node setup, but they recommend creating a new graylog server as a second node, but I want to create that second node in the same graylog server.

I have tried the following methods:

• creating a new node_id_file: /etc/graylog/server/node-id-node2 with a unique id inside.

• set the elasticsearch_discovery_zen_ping_unicast_hosts and elasticsearch_network_host in the server.conf file

• added the cluster_name, elastic_cluster_name and the node_id in the server.conf file

With the following settings, the graylog still have one node.

Any idea how to add the plus node for the same cluster?

[gsmith]

Hey @eurynome

Have you seen this in the documentation?

Multi-Node Setup