what is you recommendation for cassandra/elastic Stage cluster?
Is it ok to make 3 nodes cluster, on each node both cassandra/elastic ?
Piotr Borowski [DevOps Advocate] Selected answer as best 26th January 2023
Piotr,
The recommended setup for a Cassandra and Elasticsearch cluster is to have DataMiner, Cassandra, and Elasticsearch hosted on dedicated machines.
Detailed information can be found at Supported system data storage architectures | DataMiner Docs
About your proposal to have Cassandra and Elastic running in the same nodes, it can work if you have the appropriated resources correctly sized to your data. Still, you are not guaranteeing that each software has dedicated resources e.g. if Cassandra starts to use a lot of virtual memory, it will affect Elasticsearch, and vice-versa.
Piotr Borowski [DevOps Advocate] Posted new comment 26th January 2023
This answer is also correct – generally equal to this other (but Jordy was a little bit faster 🙂 thank you very much.
I would prefer to limit the number of nodes, especially that in some solutions there is cassandra/ elastic/ data miner SW on one node