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Automate taking backups from Azure disks attached to Azure Kubernetes Service
At the beginning of 2019 I wrote a blog post about taking backups from Azure disks attached to an Azure Kubernetes Service cluster.->...
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Troubleshooting Azure Kubernetes Service tunnel component issues
In Azure Kubernetes Service Microsoft manages the AKS control plane (Kubernetes API server, scheduler, etcd, etc.) for you. The AKS control plane interacts with the AKS nodes in your subscription via a...
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Azure Reservations and the RBAC dilemma
Cloud computing underlies a constant change. Things you take today for granted are different tomorrow. Surprisingly, even designs and implementations on the same platform can be different.Welcome to...
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Increase your application availability with a PodDisruptionBudget on Azure...
This is the first blog post of a series of posts covering the topic about increasing the application availability on Azure Kubernetes Service / Kubernetes.Today we cover the PodDisruptionBudget.What is...
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Azure Kubernetes Service – Azure RBAC for Kubernetes authorization
At this year’s Ignite conference Microsoft announced the next major step of integrating Azure functionality into AKS: Azure RBAC for Kubernetes authorization.->...
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Increase your application availability with pod anti-affinity settings in...
This is the second blog post of a series of posts covering the topic about increasing the application availability on Azure Kubernetes Services / Kubernetes.Today we cover the pod anti-affinity...
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Evaluating Gatekeeper policies with the Rego Playground
Writing and evaluating Gatekeeper policies can be hard sometimes. Especially the testing part of a newly created policy.There are different approaches to tackle this like having a dedicated test...
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Run the Envoy Proxy ratelimit service for Istio on AKS with Azure Cache for...
The Istio sidecar proxy uses Envoy and therefore supports two different rate limiting modes. A local one targeting only a single service and a global one targeting the entire service mesh.The local...
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Distribute your application across different availability zones in AKS using...
This is the last blog post of a series of posts covering the topic about increasing the application availability on Azure Kubernetes Service / Kubernetes.Today we cover the pod topology spread...
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Detecting SNAT port exhaustion on Azure Kubernetes Service
Running applications on an Azure Kubernetes Service cluster which make a lot of outbound calls might led to a SNAT port exhaustion.In today’s blog article I walk you through how to detect and mitigate...
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Implement rate limiting with Istio on Azure Kubernetes Service
In my last blog post I walked you through the setup of the rate limiting reference implementation: The Envoy Proxy ratelimit service.->...
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Monitor the Envoy Proxy ratelimit service with Azure Monitor for containers
The last two blog posts of this series covered the setup of the Envoy Proxy ratelimit service and its implementation with Istio.->...
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Remove dangling container manifests from Azure Container Registry
The Azure Container Registry offers three different SKUs which differentiate from each other not only from the feature set. Each SKU comes with included storage starting at 10 GB up to 500 GB.Depending...
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Identify the max capacity of ephemeral OS disks for Azure VM sizes
Back in 2019 Microsoft introduced the ephemeral OS disk option for Azure VMs and VMSS.-> https://azure.microsoft.com/en-us/updates/azure-ephemeral-os-disk-now-generally-available/Instead of storing...
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Running Podman on macOS with Multipass
Several months ago, I worked on a little side project during my spare time but instead of writing a blog post I set it aside till today.Since the announcement that Docker made yesterday on what has...
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5 years as a Microsoft MVP
Back in July I was rewarded with the precious Microsoft MVP award in the category Microsoft Azure.It took a while to receive my MVP award disks, especially the 5 years disk.I am looking forward to my...
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Local Kubernetes setup with KinD on Podman
In one of my last blog posts I walked you through the setup how to run Podman on macOS with Multipass as Docker for Desktop alternative.->...
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Azure Policy for Kubernetes – custom policies on Azure Arc enabled Kubernetes
On September 1st Microsoft announced the public preview of the custom policy support for Azure Policy for AKS.->...
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Mitigating slow container image pulls on Azure Kubernetes Service
It might happen that you experience slow container image pulls on your Azure Kubernetes Service nodes. First thought might be the Azure Container Registry is the root cause. Even when using the ACR...
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Using Conftest for Azure Policy for Kubernetes
Conftest is a tool that lets you write tests against structure data like Kubernetes templates.-> https://www.conftest.dev/So, why should you use Conftest when you already established your policies...
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