Most of us probably started to use Python as a scripting language to quickly create working code for e.g. numerical and scientific calculations. But, of course, Python is much more than that. If you intend to use Python for more traditional applications, you will sooner or later need to interface with a database. Today, we … Continue reading Database programming with Python
One of the strengths of Kubernetes is the ability to spin up pods and containers with a defined workload within seconds, which makes it the ideal platform for automated testing and continuous deployment. In this, we will see how GitHub, Kubernetes, Helm and Travis CI play together nicely to establish a fully cloud based CI/CD … Continue reading Building a CI/CD pipeline for Kubernetes with Travis and Helm
In the last post in this series, we have created a more or less functional bitcoin controller. However, to be reasonably easy to operate, there are still a few things that are missing. We have hardcoded secrets in our images as well as our code, and we log data, but do not publish events. These … Continue reading Building a bitcoin controller for Kubernetes part IX – managing secrets and creating events
You are using Github to manage your open source projects and want a CI/CD pipeline, but do not have access to a permanently available private infrastructure? Then you might want to take a look at hosted CI/CD platforms like Bitbucket pipelines, Gitlab, CircleCI - or Travis CI When I was looking for a cloud-based integration … Continue reading Playing with Travis CI
Our bitcoin controller is more or less complete, and can be deployed into a Kubernetes cluster. However, the deployment process itself is still a bit touchy - we need to deploy secrets, RBAC profiles and the CRD, bring up a pod running the controller and make sure that we grab the right version of the … Continue reading Building a bitcoin controller for Kubernetes part VIII – creating a helm chart
Kubernetes controllers are tightly integrated with the Kubernetes API - they are invoked if the state of the cluster changes, and they act by invoking the API in turn. This tight dependency turns testing into a challenge, and we need a smart testing strategy to be able to run unit and integration tests efficiently. The … Continue reading Building a bitcoin controller for Kubernetes part VII – testing
Our bitcoin controller now has the basic functionality that we expect - it can synchronize the to-be state and the as-is state and update status information. However, to be really useful, a few things are still missing. Most importantly, we want our nodes to form a real network and need to establish a mechanism to … Continue reading Building a bitcoin controller for Kubernetes part V – establishing connectivity
