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Multiple DMS on 1 Cassandra cluster

Solved1.43K views11th May 2021cassandra cluster Elastic
4
Matthijs Favorel [SLC] [DevOps Advocate]1.97K 11th May 2021 0 Comments

Is it possible to have 1 large Cassandra cluster that supports multiple DataMiner systems?

If I have for example 4 DMS (of different sizes: 2 agents, 2 agents, 5 agents and 7 agents) can these use 1 large Cassandra cluster?

What about Elastic DB?

Matthijs Favorel [SLC] [DevOps Advocate] Selected answer as best 11th May 2021

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Bert Vervaele [SLC]50 Posted 11th May 2021 0 Comments

This is possible, but you should always ensure that the Cassandra cluster has the correct specifications to handle all the load.

For Cassandra single node configuration on agents:
When doing this every agent should get it's own custom <DB> tag int the DB.xml, this will be used in the cluster to create a keyspace for each agent. Ensure that this is diffrent on every agent across all dms's

For Cassandra Cluster configurations:
You can make use one large cluster by adding the custom <DB> tag to your DB.xml, this should be the same for every agent inside the same DMS, but Different for every DMS.

For Elastic configured agents:
You can make use one large cluster by adding the custom <DB> tag to your DB.xml, this should be the same for every agent inside the same DMS, but Different for every DMS.

Matthijs Favorel [SLC] [DevOps Advocate] Selected answer as best 11th May 2021
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