-
Deploy Azure DNS security policies via Terraform
Today, I walk you through a new feature that has been released this year: Azure DNS security policies. -> https://azure.microsoft.com/en-us/updates?WT.mc_id=AZ-MVP-5000119&id=497535 Azure DNS security policies allow you to get insights into your DNS traffic at the Virtual Network level. The two main use cases for DNS security policies are blocking name resolution of known or malicious…
-
Restrict access to the IMDS endpoint on Azure Kubernetes Service with Cilium
In today’s blog post, we take a look at restricting access to the Azure IMDS endpoint on an Azure Kubernetes Service (AKS) cluster with Cilium using the BYOCNI approach. The Instance Metadata Service (IMDS) endpoint, also known as short IMDS, can be called directly from every Azure VM or VMSS instance via the following command.…
-
How to restore a container image from an Azure Kubernetes Service node to an Azure Container Registry?
Imagine a specific version of your container image used for your application has been deleted from your Azure Container Registry. It cannot be restored for whatever reason through your CI/CD pipeline, and you still need this version. How can you restore that specific version when you still have a running pod on one of the…
-
Kubernetes namespace exclusion options for Kyverno policies
During my preparation for the Kyverno Certified Associate exam, I hit an interesting part that I would like to talk about today. Which options do we have to exclude entire namespaces from Kyverno policies? Depending on what we want to achieve, we have three different options at hand to accomplish our goal. Option 1 –…
-
How to send Cilium metrics to Azure Managed Prometheus
In today’s blog post, I walk you through the setup on how to send Cilium metrics to Azure Managed Prometheus. Our setup covers two scenarios. The first one is an Azure Kubernetes Service cluster using Cilium via the BYOCNI (Bring Your Own CNI) option, and the second one is a K3s single node cluster running…
-
Use an Azure Managed Identity for Fluent Bit’s Azure Data Explorer output plugin on Azure Kubernetes Service
The new Fluent Bit version 4 contains an interesting new feature for the Azure Data Explorer output plugin. Besides the standard option of using an Azure Service Principal for authentication, it now additionally supports an Azure Managed Identity for authentication. Azure_kusto (Output) azure managed identity support added (#10036) -> https://fluentbit.io/announcements/v4.0.0/ -> https://github.com/fluent/fluent-bit/pull/10036 Azure Managed Identities…