# Clustering question. HA cluster with 3 master and only 2 data nodes?
**URL:** https://discuss.elastic.co/t/clustering-question-ha-cluster-with-3-master-and-only-2-data-nodes/191197
**Category:** Elasticsearch
**Created:** [July 18, 2019, 12:46pm UTC](https://discuss.elastic.co/t/clustering-question-ha-cluster-with-3-master-and-only-2-data-nodes/191197 "2019-07-18T12:46:22Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@asp](https://discuss.elastic.co/u/asp)
#### Post date: [July 18, 2019, 12:46pm UTC](https://discuss.elastic.co/t/clustering-question-ha-cluster-with-3-master-and-only-2-data-nodes/191197/1 "2019-07-18T12:46:22Z")
Hi, I want to deploy elasticsearch on bare metal kubernetes.
I will use local storage as there is no fast and (by k8s) manageable storage provider available.
My k8s cluster consists of 5 servers (1 master, 4 workers), 2 of them have enough HDD capacity for elasitcsearch, the other two workers have only one small disk (only good for sstateless pods).
To learn for production I want to reach HA for my elastic stack, meaning I need at least 3 nodes. To ship around my disk issues, I have following idea, and ask you if that should work:
- server 1
- big disk, nod
- node.master: true
- node.data: true
- node.ingest: true
- server 2: big disk
- node.master: true
- node.data: true
- node.ingest: true
- server 3: low disk
- node.master: true
- node.data: false
- node.ingest: true
Does it make sense to run ingest on a non data node?
Would this scenery work?
Do you see any pitfalls?
I will work with 1 replica only.
Thanks, Andreas
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [August 15, 2019, 12:46pm UTC](https://discuss.elastic.co/t/clustering-question-ha-cluster-with-3-master-and-only-2-data-nodes/191197/2 "2019-08-15T12:46:30Z")
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