Template Literals Since ES6 (JavaScript 2015), the “Template Literals” feature is available and provides an easy way to interpolate variables and expressions into strings. e.g.: const firstName = "Joe"; const lastName = "Bloggs"; const message = `Welcome ${firstName}, ${lastName}!`; console.log(message); // will output: Welcome Joe, Bloggs! This syntax might also be handy…

Background Helm offers a simple template language that allows us to reference config values that define in a “values file” easily. apiVersion: v1 kind: ConfigMap metadata: name: my-configmap data: myvalue: "Hello {{ .Values.name }}" e.g. In the Helm chart template above, we reference a config value “name” that is defined in…

In “Building Multi-CPU Architecture Docker Images for ARM and x86 (1): The Basics”, we covered the general workflow of building multi-arch Docker images with buildx/buildkit. In this article, we will cover how to get it running on GitHub Action CI. Runner Environment Using ubuntu-latest runner environment will be the easiest option to…

In “Building Multi-CPU Architecture Docker Images for ARM and x86 (1): The Basics”, we covered the general workflow of building multi-arch Docker images with buildx/buildkit. However, to get it running on Gitlab CI, you will need some extra setup. Enable Docker commands in GitLab CI/CD Jobs There are three options to enable Docker commands in GitLab CI/CD…

Why? With Apple’s M1 machines getting popular, developers are receiving more requests for ARM CPU support for their software from their users. Although the M1 version docker desktop allows users to run x86 docker images under emulation, it will be a more efficient solution to offer your software as a “universal”…

Intro We live in a time where data is all around us. The growth in the number of connected devices, new regulatory compliances, and emerging IoT & 5G technology all leads to the increasing amount of structured & unstructured data generated, identified, acquired, and stored every day. In the new digital…

Calling Helm Templates Like Functions Helm provides the named templates feature that allows users to share and reuse template snippets and deployment logic. But it is not sufficient to encapsulate & share complex logic. Sometimes, you might wonder would it be possible to invoke a named template like a function. i.e.: Passing values with complex…

Debug Your Helm Charts Helm allows you to describe your Kubernetes deployment with Go template language and supply different config values to customise your deployment. You might not need to debug your Helm Charts for simple deployments. However, when you try to add more automation by calling advanced template functions, you will miss console.log…

Why? Helm allows you to pack your Kubernetes applications in a modular way and apply different deployment logic based on users’ configuration “values files”. It’s common that we need to generate random secrets (e.g. JWT / session secrets or random passwords) during the first deployment. We can choose to let our…