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Posts by Daniel Kallner

Home » Archives for Daniel Kallner
About Daniel Kallner
As the founder and CTO of Octopus Computer Solutions. With more than 20 years of leadership experience in cloud computing, virtualization, and networking, he has spearheaded numerous deployments from scratch, scaling up systems to handle billions of daily transactions. Daniel possesses comprehensive expertise in open-source solutions, particularly in OpenStack and Kubernetes. Daniel is a trusted advisor for numerous Fortune 500 customers across the world. This website aims to highlight his expertise in production cloud computing and offer valuable industry insights, incorporating the latest technology trends.
headlamp for kubernetes

Headlamp Web Dashboard with Helm

Posted by By Daniel Kallner December 27, 2025
Introduction Headlamp Web Dashboard with Helm is a practical way to give teams a browser-based Kubernetes UI without forcing everyone…
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Longhorn Persistent Storage for Kubernetes

Longhorn Persistent Storage for Kubernetes

Posted by By Daniel Kallner December 20, 2025
Introduction Longhorn Persistent Storage for Kubernetes provides a pragmatic approach to distributed block storage without introducing external storage appliances or…
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Troubleshooting n8n WebSocket Issues on NGINX Ingress

Troubleshooting n8n WebSocket Issues on NGINX Ingress

Posted by By Daniel Kallner April 1, 2025
Introduction In this article, we will discuss a common challenge i've face many times in Kubernetes: Troubleshooting n8n WebSocket Issues…
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milvus vector

AI Vector Search on Kubernetes with Milvus

Posted by By Daniel Kallner February 24, 2025
Introduction In the world of AI, understanding high-dimensional data is critical. This is important for recommendation systems, NLP, and image…
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How to Deploy Highly Available Cilium on Raspberry Pi

How to Deploy Highly Available Cilium on Raspberry Pi

Posted by By Daniel Kallner January 19, 2025
Introduction Following our previous guide of How to Deploy a Kubernetes K3s on Raspberry Pi , we wanted a more…
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Optimizing OpenShift Application Performance: A Complete Guide

Optimizing OpenShift Application Performance: A Complete Guide

Posted by By Daniel Kallner December 28, 2024
Introduction Ensuring the best application performance is crucial for businesses relying on high-performance computing environments. Although the entire world is…
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How to Configure Harbor Cache for Efficient Image Distribution

How to Configure Harbor Cache for Efficient Image Distribution

Posted by By Daniel Kallner November 24, 2024
Introduction Harbor is a cloud-native registry that provides secure and scalable image management. One of its critical features is caching,…
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How vCluster enhances Kubernetes with Isolation and Security

How vCluster enhances Kubernetes with Isolation and Security

Posted by By Daniel Kallner October 7, 2024
Introduction In this post we will learn How vCluster enhances Kubernetes with Isolation and Security. It allows you to create…
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How to Deploy a Kubernetes K3s on Raspberry Pi

How to Deploy a Kubernetes K3s on Raspberry Pi

Posted by By Daniel Kallner October 6, 2024
Introduction Running Kubernetes on lightweight hardware like Raspberry Pi is easier than ever with K3s. In this guide, we'll walk…
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Securing OpenShift Ingress and API with cert-manager

Securing OpenShift Ingress and API with cert-manager

Posted by By Daniel Kallner August 8, 2024
Introduction In this post, we will be Securing OpenShift Ingress and API with cert-manager. We will create Certificates for OpenShift…
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How to provide S3 service using Minio on Kubernetes

How to provide S3 service using Minio on Kubernetes

Posted by By Daniel Kallner September 25, 2023
Introduction To provide S3 service using Minio on Kubernetes offers a reliable, scalable, and cost-effective object storage solution. Minio is…
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Sync Active Directory Groups to OpenShift Automatically

Sync Active Directory Groups to OpenShift Automatically

Posted by By Daniel Kallner September 6, 2023
Introduction In a complex environment such as OpenShift, seamless integration is key. In this post, we will go through the…
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    Headlamp Web Dashboard with Helm
    by Daniel Kallner
    December 27, 2025
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