kloia Blog

OpenShift vs Harvester: Choosing a VMware Alternative

omer.urhan@kloia.com (Omer Faruk Urhan) — Tue, 10 Feb 2026 14:29:58 GMT

As VMware licensing costs continue to rise, many infrastructure teams are rethinking their virtualization strategy. The question we hear more often now isn’t “Should we modernize?” but rather “What should we modernize to?”

Kubernetes-native platforms are quickly becoming the default answer. Instead of running separate stacks for virtual machines and containers, organizations are looking for solutions that can handle both, ideally under a single control plane.

Two names that frequently come up in this conversation are SUSE Harvester and Red Hat OpenShift.

Both promise modern, Kubernetes-based virtualization. Both can replace traditional hypervisors in on-prem environments. But once you look closer, their design philosophies, and the experience they offer, are quite different.

Here’s what stands out after evaluating both platforms in real-world scenarios.

AWS GenAI Transform SQL Performance & Use Cases | Kloia Blog

tarik@kloia.com (Tarık Guven) — Thu, 08 Jan 2026 20:45:18 GMT

After years of manually wrestling with MSSQL to PostgreSQL conversions using SCT and DMS, I finally got my hands on AWS Transform SQL. I put it through its paces on a production-scale database with 1,500+ stored procedures. The results? Surprisingly impressive - and a few gotchas worth knowing about.

KubeVirt on Amazon EKS for Containers and VMs | Kubernetes

ahmet.aydin@kloia.com (Ahmet Aydın) — Thu, 25 Dec 2025 10:00:00 GMT

Kubernetes is the de facto standard for container orchestration, enabling developers to easily deploy, scale, and manage containerized applications. However, there are scenarios where running virtual machines (VMs) alongside containers is necessary. This is where KubeVirt comes into play.

KubeVirt is a Kubernetes extension that allows you to manage VMs alongside containers within the same Kubernetes cluster. This blog post will guide you through the process of installing KubeVirt on an Amazon Elastic Kubernetes Service (EKS) cluster, complete with examples and best practices.

Java Virtual Threads Benchmark & Performance Analysis | Kloia

Baran Gayretli — Fri, 19 Dec 2025 12:00:00 GMT

A groundbreaking innovation called Java Virtual Threads (Project Loom) was designed to improve the concurrency mechanism and boost Java application performance. Since virtual threads are more lightweight than traditional threads, a larger number of concurrent threads can be managed more effectively.

Werner Vogels' Final re:Invent Keynote: The Renaissance Developer

derya@kloia.com (Derya (Dorian) Sezen) — Mon, 08 Dec 2025 02:58:15 GMT

Werner’s keynotes have always been inspiring rather than sales&marketing, which is why his sessions are consistently the most anticipated at every re:Invent. Attendees usually known to return back homes after his keynote, even if there’s still another day of the conference left.

Kubernetes 1.34: Fine-Grained Container Restart Policies

raja.haikal@kloia.com (Raja Haikal) — Tue, 30 Sep 2025 14:53:02 GMT

Every Kubernetes user has faced the difficulty of managing Pods with multiple containers. Modern Pods often have a main application container, a sidecar container for extra tasks (like monitoring or managing secrets), and an init container for a one-time initial process. However, all these containers were tied to the same restart rule for the whole Pod, which was often frustrating.

AWS Cloud Cost Savings by Migrating Kubernetes Workloads to Graviton

muhammad.bahy@kloia.com (Muhammad Bintang Bahy) — Tue, 09 Sep 2025 10:11:32 GMT

Running Kubernetes clusters on AWS Cloud is powerful and offers various deployment options depending on instance choice. One significant opportunity for optimization is migrating workloads from the traditional AMD64 (x86_64) architecture to AWS ARM64 Graviton instances. This post walks through our recent migration project, highlights the practical steps and real-world challenges.

AWS EKS Multi-Tenancy Guide with vCluster

raja.haikal@kloia.com (Raja Haikal) — Thu, 21 Aug 2025 09:30:56 GMT

Kubernetes is the de facto standard for container orchestration, allowing teams to deploy, scale, and manage containerized applications. However, implementing multi-tenancy in Kubernetes is not always straightforward. Many organizations need to run multiple environments such as development, staging, and production on the same infrastructure while keeping each tenant isolated in terms of resources, security, and access.

The challenge becomes even greater as the number of environments grows. Creating a separate Kubernetes cluster for every team or project provides strong isolation but also increases infrastructure costs, operational complexity, and maintenance work. On the other hand, relying only on namespaces to achieve multi-tenancy can save money but often fails to provide complete isolation, custom configurations, or flexibility in Kubernetes versions.

Kubernetes in the cloud: AKS vs EKS

doga.akcinar@kloia.com (Doga Akçınar) — Mon, 30 Jun 2025 21:39:08 GMT

AWS EKS and Azure AKS are two major managed Kubernetes Services. As organizations continue their cloud transformation journeys, these platforms serve as the foundation for countless enterprise workloads worldwide. While both cloud providers offer wide service portfolios, their managed Kubernetes offerings have become critical for modern applications.

Whether you are an Azure or AWS customer, or simply evaluating your options for managed Kubernetes, this blogpost aims to show how those providers approach aspects like version management, networking, and other key differences between the two cloud platforms.

Understanding Load Balancing Across OSI Layers: Layer 3, Layer 4, and Layer 7

halil@kloia.com (Halil Bozan) — Wed, 18 Jun 2025 08:40:29 GMT

Load balancing, a critical component in managing network traffic, plays a vital role in maintaining network reliability. Load balancing offers different methods and advantages that align with specific enterprise needs.