Deploy Elasticsearch on Azure Cobalt 100 Arm virtual machines
Introduction
Explore Elasticsearch benchmarking on Azure Cobalt 100
Create an Azure Cobalt 100 VM for Elasticsearch
Install Elasticsearch and ESRally on Azure Cobalt 100
Benchmark Elasticsearch with ESRally on Azure Cobalt 100
Next Steps

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These FAQs were drafted with an approved AI-assisted workflow and reviewed by Arm contributors before publication. Human technical review remains part of the process so the final page reflects engineering rigor, accuracy, and Arm editorial standards.

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Which Azure VM size should I choose for this deployment?
Use a memory-optimized VM in the Epdsv6 series with the Arm-based Cobalt 100 processor. You configure this instance through the Azure portal.
Do I need Java, and which version should I install?
Yes. Install OpenJDK 21 (openjdk-21-jdk) because Elasticsearch needs it.
Should I run ESRally on the same VM as Elasticsearch?
Yes. Install both Elasticsearch and ESRally on the same Cobalt 100 VM.
What should I check to confirm Elasticsearch is ready before benchmarking?
Ensure the service starts without errors and is ready to accept connections. Proceed to ESRally only after the service is running and healthy.
Which ESRally track should I run, and what results should I focus on?
Run the geonames track. Focus on key metrics reported by ESRally, including indexing throughput and query latency under mixed ingest and search conditions.

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