What types of node require license, or i need license for all node?

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1

Hello team.
I have build cluster with 67 node, as displayed in below table:

My question is that,

  1. what types of node require license, or i need license for all node?
Nodes Count
Warm nodes 16
hot nodes 21
ingest nodes 6
master nodes 3
co-ordinator nodes 2
logstash nodes 14
curator nodes 1
elk-incident nodes 2
monitoring nodes 2
Total count 67
2

Why do you have a node for curator? Why not just use ILM?
What is an elk-incident node?

3

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