Aditya Krishnakumar
Senior Site Reliability Engineer at SentinelOne
Ahmedabad, India
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Aditya Krishnakumar is a Senior Site Reliability Engineer at SentinelOne and has 8+ years of experience with Cloud, DevOps and Kubernetes infrastructure. His current focus is on Platform Reliability and Data Infrastructure within SentinelOne and has been a technical reviewer for books on Serverless and Cloud Native Cybersecurity.
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Operating OpenSearch at Scale: Fixing Hot Shards, Disk Imbalance, and Cluster Instability
Running OpenSearch in production at scale is very different from what tutorials or books show. When you manage many clusters, you start seeing issues you didn’t know existed, like shard and disk imbalance, uneven traffic distribution, and unstable cluster states. These problems can degrade search performance and even cause incidents.
In this session, we will share real challenges we faced while operating large OpenSearch clusters and the practical solutions we used to stabilize them. We will explore how shard distribution can silently create problems, why some nodes end up using much more disk than others, and how clusters behave under heavy indexing and query load.
This talk focuses on the operational side of running OpenSearch in production. We’ll discuss strategies for better shard allocation, preventing disk imbalance, controlling indexing pressure, and keeping clusters stable under load.
Attendees will leave with practical techniques they can apply to run OpenSearch clusters reliably at large scale and improve stability and performance in real-world environments.
Running Kubernetes on Raspberry Pis with k3s and Open-Source Observability
This talk walks through the complete journey of setting up a 3-node k3s cluster on Raspberry Pis using DietPi as the base OS, tackling real-world challenges like resource optimization, networking, and storage constraints.
We’ll cover essential Kubernetes fundamentals applied to edge and low-cost environments, including cluster bootstrapping, workload scheduling, and best practices for managing microservices on limited hardware. Most importantly, you’ll learn how to implement production-grade observability using Grafana and open-source tools without breaking the budget.
Perfect for learners exploring Kubernetes in development environments, students, and organizations looking to understand cloud-native concepts with minimal infrastructure investment.
OpenSearchCon India 2026 Sessionize Event
Aditya Krishnakumar
Senior Site Reliability Engineer at SentinelOne
Ahmedabad, India
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