Best practices – Azure IoT Edge deployments with Azure Kubernetes Service

Today I am talking about some best practices in regards of Azure IoT Edge deployments with Azure Kubernetes Service. Just a short recap about the IoT Edge deployment options with Kubernetes. The connection between Kubernetes and the Azure IoT Hub is established via the IoT Edge Virtual Kubelet Provider. The IoT Edge VK Provider consists of two containers. The Virtual Kubelet that receives the Kubernetes Read more [...]

Azure Functions – Azure Kubernetes Service Advanced Networking IP address calculation

Lately I was playing around with Azure Functions especially the HTTP Trigger Function and was seeking for a good use case of a Function taking JSON input and providing JSON as output. Looking at a certain task you need to do before you can deploy AKS with Advanced Networking enabled. I had found my use case. Before you can deploy AKS with Advanced Networking, Azure CNI plugin, you are required to Read more [...]

Kubernetes network policies on Azure Kubernetes Service with Azure NPM

Microsoft provides an own network policy module to implement Kubernetes network policies with the Azure CNI plugin for acs-engine and AKS called Azure NPM. -> https://github.com/Azure/azure-container-networking/tree/master/npm The Azure NPM is available since quite some time for acs-engine and natively integrated, but not yet for AKS. If you want to use Azure NPM on Azure Kubernetes Service, Read more [...]

Using dysk in Azure Kubernetes Service – AKS cluster upgrade and its learnings from it

In one of my previous blog posts I have explained how to use dysk in Azure Kubernetes Service as persistent storage option. -> https://www.danielstechblog.io/using-dysk-in-azure-kubernetes-service-as-persistent-storage-option/ Today we have a look how a Kubernetes version upgrade of an AKS cluster effects dysk in operations and may force you to rethink your chosen Azure VM and OS disk SKU. First Read more [...]

Introducing breaking changes to the IoT Edge VK provider helm chart and deployment templates for Kubernetes

When you are running the IoT Edge VK provider deployed by the previous helm chart, you might have noticed the following log entry querying the virtualkubelet container logs. kubectl logs hub0-iot-edge-connector-6b594c6444-g7mqz virtualkubelet Flag --taint has been deprecated, Taint key should now be configured using the VK_TAINT_KEY environment variable The process to define the taint for the virtual Read more [...]

Using dysk in Azure Kubernetes Service – updated deployment templates

In one of my last blog posts I have explained how to use dysk in Azure Kubernetes Service as persistent storage option. -> https://www.danielstechblog.io/using-dysk-in-azure-kubernetes-service-as-persistent-storage-option/ Since then some of the dysk parts have been moved to the official Azure GitHub repository. -> https://github.com/Azure/kubernetes-volume-drivers Comparing the deployment Read more [...]

Azure IoT Edge 1.0.2 update issues

During Microsoft Ignite the Azure IoT Edge version 1.0.2 was released with some important improvements like proxy support. -> https://azure.microsoft.com/en-us/updates/iot-edge1-0-2/ Today I updated my two Raspberry Pi’s running Raspbian to the new IoT Edge version. -> https://docs.microsoft.com/en-us/azure/iot-edge/how-to-install-iot-edge-linux-arm#install-the-container-runtime After Read more [...]

View AKS kubelet logs via serial console for Azure VMs

As you may now you can view the kubelet logs from an AKS node for troubleshooting purposes. The guidance provided in the Microsoft documentation lets spin you up a container in the AKS cluster which you then use to jump on the node via an SSH connection. -> https://docs.microsoft.com/en-us/azure/aks/ssh -> https://docs.microsoft.com/en-us/azure/aks/kubelet-logs Another way you can use Read more [...]

Speaking at Experts Live Europe 2018 in Prague

We are only a month a way from one of the superb conferences held in Europe, Experts Live Europe. Being in Berlin the last two times Experts Live Europe takes place this year in the beautiful city of Prague. Why you should attend, if you have not a ticket yet? The answer is easy. Learning from top industry experts, networking, having a good time and making new friends. Most of the experts Read more [...]

Sending logs from the Azure Kubernetes Service master endpoint to Log Analytics

Azure provides native monitoring capabilities for an Azure Kubernetes Service cluster based on Azure Monitor, Azure Log Analytics and the Container Insights solution. -> https://www.danielstechblog.io/monitor-azure-kubernetes-service-with-azure-monitor-container-health/ But this covers only the part for the agent nodes and the containers that are running on them. If you want to have the logs Read more [...]