baeke.info, page 12
Update to IoT Simulator
Quite a while ago, I wrote a small IoT Simulator in Go that creates or deletes multiple IoT devices in IoT Hub and sends telemetry at a preset interval. However, when you use version 0.4 of the simulator, you will encounter issues in the following cases: You create a route to store telemetry in an…
GitOps with Kubernetes: a better way to deploy?
I recently gave a talk at TechTrain, a monthly event in Mechelen (Belgium), hosted by Cronos. The talk is called “GitOps with Kubernetes: a better way to deploy” and is an introduction to GitOps with Weaveworks Flux as an example. You can find a re-recording of the presentation on Youtube:
Writing a Kubernetes operator with Kopf
In today’s post, we will write a simple operator with Kopf, which is a Python framework created by Zalando. A Kubernetes operator is a piece of software, running in Kubernetes, that does something application specific. To see some examples of what operators are used for, check out operatorhub.io. Our operator will do something simple in…
Azure Security Center and Azure Kubernetes Service
Quick post and note to self today… Azure Security Center checks many of your resources for vulnerabilities or attacks. For a while now, it also does so for Azure Kubernetes Service (AKS). In my portal, I saw the following: There are many possible alerts. These are the ones I got: The first one, for instance,…
Giving Argo CD a spin
If you have followed my blog a little, you have seen a few posts about GitOps with Flux CD. This time, I am taking a look at Argo CD which, like Flux CD, is a GitOps tool to deploy applications from manifests in a git repository. Don’t want to read this whole thing? There are…
Kustomize and Flux
Flux has a feature called manifest generation that works together with Kustomize. Instead of just picking YAML files from a git repo and applying them, customisation is performed with the kustomize build command. The resulting YAML then gets applied to your cluster. If you don’t know how customisation works (without Flux), take a look at…
A quick tour of Kustomize
Image above from: https://kustomize.io/ When you have to deploy an application to multiple environments like dev, test and production there are many solutions available to you. You can manually deploy the app (Nooooooo! 😉), use a CI/CD system like Azure DevOps and its release pipelines (with or without Helm) or maybe even a “GitOps” approach…
Creating Kubernetes secrets from Key Vault
If you do any sort of development, you often have to deal with secrets. There are many ways to deal with secrets, one of them is retrieving the secrets from a secure system from your own code. When your application runs on Kubernetes and your code (or 3rd party code) cannot be configured to retrieve…
Creating a Kubernetes operator on Windows and WSL
I have always wanted to create a Kubernetes operator with the operator framework and tried to give that a go on my Windows 10 system. Note that the emphasis is on creating an operator, not necessarily writing a useful one 😁. All I am doing is using the boilerplate that is generated by the framework.…
Use a Power Automate Button to start an Azure DevOps build on the go
In a previous post, we built a pipeline to deploy AKS using Azure DevOps. Because it can take while to deploy, it can be handy to start the deployment at any time without having to logon to Azure DevOps. There are many ways to achieve this, but one of the easiest ways is Power Automate.…
