Daniel's Tech Blog

Cloud Computing, Cloud Native & Kubernetes

Tag: Public Cloud

  • Preventing SNAT port exhaustion on Azure Kubernetes Service with Virtual Network NAT

    Last year I have written a blog post about detecting SNAT port exhaustion on Azure Kubernetes Service. -> https://www.danielstechblog.io/detecting-snat-port-exhaustion-on-azure-kubernetes-service/ Today we dive into the topic of how to prevent SNAT port exhaustion on Azure Kubernetes Service with Virtual Network NAT. Since this year the managed NAT gateway option for Azure Kubernetes Service is generally available…

  • Using Rancher Desktop as Docker Desktop replacement on macOS

    Last year I wrote a blog post about running Podman on macOS with Multipass as a Docker Desktop replacement. -> https://www.danielstechblog.io/running-podman-on-macos-with-multipass/ Back at that time I had looked also into Podman Machine and Rancher Desktop. Podman Machine was out very quickly without support for host volume mounts. Rancher Desktop instead was promising but the host…

  • Remove dangling multi-arch container manifests from Azure Container Registry

    Last year I wrote a blog post about removing dangling container manifests from ACR. -> https://www.danielstechblog.io/remove-dangling-container-manifests-from-azure-container-registry/ I did not cover an edge case when it comes to multi-arch container manifests. So, here we are, and I walk you through that topic today. First, do not be afraid the PowerShell script from last year works perfectly…

  • 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 with Azure Policy for Kubernetes? As Azure Policy for Kubernetes uses Gatekeeper the OPA implementation for Kubernetes under the hood it uses Gatekeeper constraint templates written…

  • 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 without the geo-replication option enabled, image pulls from an ACR in Europe to AKS nodes running in Australia are fast. Therefore, it…

  • 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. -> https://azure.microsoft.com/en-us/updates/custom-aks-policy-support-now-public-preview/ I am already using the public preview on my AKS cluster and was curious about if this would work as well with Azure Arc enabled Kubernetes. The short answer is yes, but with some minor…

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