I read the documentation and learned that Dynatrace recommends clustering with at least three nodes to avoid split-brain sync problems.
My question is: if I want to add more nodes, can I increase it to four or at least six?
Thanks in advance for your answer
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Yes, it’s possible to have 4. However, 4 nodes give you just more processing power and storage. Starting from 5 nodes you increase availability as you can lose 2 nodes.
In one rack and one dc you can afford losing max 2 nodes regardless of the number of total nodes.
when you run 3 racks then you can lose entire rack - no matter how many nodes are in a rack - so more than two.
in 9 nodes setup I’d recommend 3 racks deployment with 3 nodes in each - if you can have a physical location distribution eg within 3 AWS availability zones in a region