Author Archives: Daniel

Tweaking data collection for Azure Monitor for containers

Recently Microsoft introduced silently some configurations options for the Azure Monitor for containers solution. As you might know the Azure Monitor for containers solution collects stdout, stderr and environment variables from AKS and AKS-engine clusters except from containers running in the kube-system namespace. If you want to use the new feature the minimum agent version that is required Read more [...]

Installing Helm and Azure IoT Edge on a k3s Kubernetes cluster on Raspbian

This is the third and last blog post in a series covering k3s a new Kubernetes distribution by Rancher. -> https://k3s.io/ In this post we focus on the Azure IoT Edge deployment on Kubernetes via the package manager tool Helm. -> https://docs.microsoft.com/en-us/azure/iot-edge/about-iot-edge -> https://helm.sh/ The topic is divided in two parts. First about the automated container Read more [...]

Using an Azure Pipelines agent on a k3s Kubernetes cluster on Raspbian

This is the second blog post out of three in a series covering k3s a new Kubernetes distribution by Rancher. -> https://k3s.io/ In this post we focus on the container image build and deployment of the Azure Pipelines agent on the k3s Kubernetes cluster we have set upped in the previous post. -> https://www.danielstechblog.io/running-a-kubernetes-cluster-with-k3s-on-raspbian/ So, how Read more [...]

Running a Kubernetes cluster with k3s on Raspbian

This is the first blog post out of three in a series covering k3s a new Kubernetes distribution by Rancher. -> https://k3s.io/ In this post we focus on the setup of k3s on Raspbian to get a working Kubernetes cluster with one master and two nodes each powered by a Raspberry Pi 3B+. Before we get started with the k3s setup, I want to share the shell script with you I am using for the Raspbian Read more [...]

Updated Azure Function App – AKS Advanced Networking IP address calculation

Just a short information about the update I have done for the Azure Function App doing the AKS Advanced Networking IP address calculation (Azure CNI). Since I have written the Azure Function App, they have been some changes what limits are supported for AKS using Azure CNI networking. Minimum pods per node: 30 Maximum pods per node: 250 Maximum nodes per cluster (only with multiple node Read more [...]

SSH access to AKS nodes for troubleshooting purposes

Under normal circumstances you do not need SSH access to your AKS nodes. Even when you create a new AKS cluster you do not have to provide an admin username and a public SSH key. Deployment method admin username required? public SSH key required? Azure portal No, cannot be set No, cannot be set Azure CLI Optional Optional ARM templates Required Required Terraform Required Required Why Read more [...]

Running Linkerd on Azure Kubernetes Service

Certainly, you have heard the term service mesh in the context of Kubernetes. Istio is one of the service mesh implementations that you might have heard of mostly. Beside Istio, Linkerd is the other popular service mesh implementation for Kubernetes. In this blog post I talk about the installation of Linkerd and running it on Azure Kubernetes Service. The easiest part to get started with Linkerd Read more [...]

Configure Azure Traffic Manager endpoint monitoring for container applications behind an ingress controller on AKS

Running an ingress controller on Azure Kubernetes Service requires configuration of the Azure Traffic Manager endpoint monitoring options when Traffic Manager is used in front of it. In this blog post I will show you an example configuration of the Traffic Manager endpoint monitoring for a container application behind the Ambassador API gateway running on AKS. First, here is the Kubernetes service Read more [...]

Azure Load Balancer behavior when externalTrafficPolicy is set to Local in the Kubernetes service object

In one of my last blog posts I talked about running the Ambassador Kubernetes-native microservices API gateway on Azure Kubernetes Service. Specially to define and set the configuration option externalTrafficPolicy to Local on the Ambassador Kubernetes service object. -> https://www.danielstechblog.io/running-ambassador-api-gateway-on-azure-kubernetes-service/ But have you ever asked yourself Read more [...]

Publishing Azure Functions on AKS through the Ambassador API gateway

In my last blog post I introduced you to the Ambassador Kubernetes-native microservices API gateway as an ingress controller running on Azure Kubernetes Service. -> https://www.danielstechblog.io/running-ambassador-api-gateway-on-azure-kubernetes-service/ Today I would like to show you how to publish an Azure Function running on Kubernetes through the Ambassador API gateway. It is nothing Read more [...]