Not all the domain name are supported by Let’s Encrypt ACME In my previous blog about setting up Kubernetes with MicroK8s and Traefik, I used DDNS service from noip.com to create a domain name microk8s.ddns.net for testing with whoami application which was working without any problem. But when I tried…

MicroK8s: High availability, Low-ops, Minimal Kubernetes for All-Size Clusters In my recent blog, I have setup a single-node Kubernetes cluster on my home lab server using k0s. It is a good tool that make it easy to setup a cluster in just one or two commands. However, as it may…

Reducing your cloud bill and make use of your PC at home I have been running a small Kubernetes (k8s) cluster on a cloud provider for some time and finding alternative to reduce my bill. I could have run my small workloads on a small server that cost only $5…

Your Own Server, Your Own Privacy, Multiple Users I have recently stumbled upon a video on YouTube by Wolfgang’s Channel about how to setup your own VPN server using OpenVPN. There’s also a transcript version of the video that you can read and follow along. Or you can follow my…

Docker is not the only tool to work with containers We often use Docker when we talk about containers, similar to we use ‘Coke’ when we talk about carbonated soft drink. We all know that Coke is not the only brand that sells carbonated soft drink. Same to Docker, it…

Updated Jan 2019: Azure Container Service (ACS) has been replaced by Azure Kubernetes Service (AKS). Please refer to this guide on how to easily create an AKS cluster. Table of Contents 1. Create Application ID 2. Deploy Azure Container Service 3. Connect to the Master References 1. Create Application ID 1) Go to Azure Active Directory →…

Introduction SSH is the way to connect and command your Linux machine. Doing this from Windows is even more painful as you need a client like Putty installed (Or enable built-in SSH if you’re using Windows 10). What if you can do it right from your web browser from any OS…

In my last blog, I’ve explained about deployment pipeline I built for Continuous Integration and Continuous Delivery in ABAP. Another thing that our team has built was the application monitoring. For our Java Spring Boot services, it can seamlessly integrate Prometheus module in the POM file and then your application…

In my recent project, we are building Java miniservices that connect to SAP backend via RESTful APIs. The team has setup a CI/CD pipeline in Jenkins to automate build, test, and deploy of those Java services. At the time we had the pipeline, I have realized the benefits for having…