AIOps - High elasticsearch nodes requirement (> 10 elastic nodes). Is this correct?

Products

• DX Operational Intelligence
• DX Application Performance Management
• CA App Experience Analytics

Issue/Introduction

We are trying to estimate the amount of ElasticSearch nodes requirements

Here are details of the setup and usage:

- We are planning to use APM, AXA and OI

- 1.600.000 device (as session) however we estimate only a %10 of  real and continuous activity so we set 160.000 Axa sessions

-  200 APM agents

 

Broadcom internal AIOps Sizing calculator (http://apmsizing.lvn.broadcom.net/) tell us that we need 12 x HOT elastic nodes + 1 x WARM elastic node

Is this correct?

Environment

DX Operational Intelligence 20.x
DX Application Performance Management 20.x
DX AXA 20.x

Resolution

Using DX Platform installer you can install a maximum of 3 ElasticSearch (ES)nodes and that should be good enough for DX OI in almost all cases.

More than 3 ES nodes can be needed for sizing reasons if the elasticsearch data volume is high, for example AXA stores most of its data in Elasticsearch so requires a large footprint.

Based on the above use input, the calculation of 40 App instances and 13 ES HOT nodes is correct.

 

 

Additional Information

DX AIOPs Troubleshooting, Common Issues and Best Practices