High CPU load on a three node cluster

[gsmith]

Hello && Welcome @molnar_istvan

I might be able to help.

Out of curiosity what exact process do you see when you run HTOP or TOP that may pertain to the high CPU issue?

Did you see anything in the log file Graylog/Elasticsearch or MongoDb that may pertain to this issue?
By chance do you have extractors or pipeline configured on any INPUT’s?

EDIT: I just noticed you using Elasticsearch 7.15, you may run into problems

• Installing Graylog - Installing Graylog

I’m not 100% sure but this community member had an unusual issue with Java.

• Graylog 4.1.x high CPU usage after updating for log4j - #11 by gian