Azure / Azure/AzureDatabricksBestPractices

IP address requirements clarification

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Description

The IP address requirements section seems confusing:

Each cluster node requires
- 1 Public IP and 2 Private IPs
- For a desired cluster size of X: number of Public IPs = X, number of Private IPs = 4X; how is this 4X; per above, isn't it 2X?

Also when I provision a cluster with 2 nodes, it appears to use 4 IP addresses only - 2 public and 2 private. Per above, it should've used 2 public IPs and 4 private IPs or 8 private IPs, which doesn't seem to be the case.
![image](https://user-images.githubusercontent.com/60890019/83031790-048e4480-a003-11ea-9cb4-a4ce1cd2b697.png)

![image](https://user-images.githubusercontent.com/60890019/83031966-3a332d80-a003-11ea-83bb-c0522279da7a.png)

Please clarify. Thanks.

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Research direction

Start with the IP address requirements section and compare its per-node counts, the X-node formula, and the two-node provisioning examples shown in the issue. Verify the documented public and private IP totals against current Azure Databricks behavior, then clarify the calculation and update the examples so the requirements and observed provisioning agree.

Written by the indexing model from the issue text.

Assessment

Tech stack
azure
Domain
cloud, documentation
Issue type
Documentation
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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