We have 3 Graylog nodes (1 master + 2 slaves). Each running on separate host. The Graylog is running as Docker image.
After installing Graylog Docker image 3.0 noticed that under System/Nodes>Nodes one of the three nodes is showing Unknown… while the others shows the container ID (which is the supposed info to be displayed).
What could be wrong with this node that shows Unknown?