# Master and Ingest node in one? Is my Hot-Warm-Cold concept any good?

**URL:** <https://discuss.elastic.co/t/master-and-ingest-node-in-one-is-my-hot-warm-cold-concept-any-good/241243>\
**Category:** Elasticsearch\
**Created:** [July 15, 2020, 7:50am UTC](https://discuss.elastic.co/t/master-and-ingest-node-in-one-is-my-hot-warm-cold-concept-any-good/241243 "2020-07-15T07:50:51Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![defalt](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/defalt/32/71379_2.png) [@defalt](https://discuss.elastic.co/u/defalt)\
**Post date:** [July 15, 2020, 7:50am UTC](https://discuss.elastic.co/t/master-and-ingest-node-in-one-is-my-hot-warm-cold-concept-any-good/241243/1 "2020-07-15T07:50:51Z")

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Hi,  
for a customer I have set up the following cluster concept:

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/9/d/9d916bdb48ee4b2191f92bd14e0449872e60e33c.png)  
Is it any good or do you think something should be different?  
In which node should I ingest the data and which one should run kibana?

**EDIT:**  
Is this a good idea or should I just define the Hot (or warm) Nodes as masters?

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/f/2/f2ad0a94c94ff08fa2d30a19bfc978b16723bfca.png)  
Thanks,  
defalt.

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**Author:** ![ylasri](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ylasri/32/86120_2.png) [@ylasri](https://discuss.elastic.co/u/ylasri)\
**Post date:** [July 15, 2020, 9:17am UTC](https://discuss.elastic.co/t/master-and-ingest-node-in-one-is-my-hot-warm-cold-concept-any-good/241243/2 "2020-07-15T09:17:06Z")

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Hi @defalt, Allows me to share some comments with you  
First, you need to have a clear idea on the following points :  
1- What is the Retention period of the hot data, and what is the storage required for that hot period, then a ratio of 30:1 is a good sizing  
2- What is the size of the warm data, and what is the volume required, then a ratio can go to 100:1  
3- 3 master nodes is a good option, but the sizing is so big for your master node, i will use small nodes (8Go RAM and small disk) theses nodes can be used as client to connect kibana for querying data), otherwise use them as warm nodes

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**Author:** ![defalt](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/defalt/32/71379_2.png) [@defalt](https://discuss.elastic.co/u/defalt)\
**Post date:** [July 15, 2020, 9:22am UTC](https://discuss.elastic.co/t/master-and-ingest-node-in-one-is-my-hot-warm-cold-concept-any-good/241243/3 "2020-07-15T09:22:05Z")

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Thank you for your reply. I already changed the setup for the master nodes. I realized that the master node is way to big. I will change the RAM according to your suggested ratios. I also think that its ok if the warm nodes are the masters because I don't think they will have that much load.

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [July 16, 2020, 2:01am UTC](https://discuss.elastic.co/t/master-and-ingest-node-in-one-is-my-hot-warm-cold-concept-any-good/241243/4 "2020-07-16T02:01:42Z")

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If you run dedicated master nodes, then that is what they should be. Don't use them for ingest as well.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [August 13, 2020, 2:01am UTC](https://discuss.elastic.co/t/master-and-ingest-node-in-one-is-my-hot-warm-cold-concept-any-good/241243/5 "2020-08-13T02:01:51Z")

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