Is it okay to make 7 nodes of cluster in one machine(server)?

Elastic Stack Elasticsearch
1

Hello.

I am running ELK and this has only one node of cluster on server.(ELK version is 6.8)
The indices size per a day is about below 100GB but it's gonna increase. So I need to divide nodes to master node and data node.

My plan is 3 master nodes and 4 data nodes and my question is that is it okay to make 7 nodes of cluster in one machine. My server spec is RAM: 768GB and 20 core.

Or should I need to make other 6 vm machines for other master and data nodes?
please recommend me if you have better way.

Thanks!!

2

What sort of storage does the host have?

3

you mean what kind of hard drives?
I have 5 hard disks (C,D,E,F,G) and I am running the ELK on D drive because it has 7TB.

4

Right, but what sort of storage is that drive. Network, SSD, spinning?

5

The drive is SSD.

6

Ok, that should be able to deal with it.

7

Thank you so much for your quick reply.
By the way, can I add master node and data node while I'm already running the ELK?
when i added nodes, there were something wrong.
so I think i need to search more but i just want to know in advance.

Thanks!

8

It's not clear what you mean by that sorry, can you elaborate?

9

Im already running ELK for monitoring network and I only have one master node now.
I want to add more node, so yesterday I added master node and data node for test. and then restart the elasticsearch but my kibana index(there are already have visualization and dashboard) was broken. I think kibana index shards were missing.

So I was curious i can add more nodes in this situation.

10

You can, yes.

If it doesn't work then it'd be best to create a new topic with the process you followed, the config and the logs of the nodes.

11

Okay, I got it!
Thank you so much!! :slightly_smiling_face:

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12

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