Nov 9, 2022Chapter 9: Observability Metrics: Prometheus, Grafana, Alert Manager & Slack NotificationsIn this blog, we will set up the Metrics observability and configure the alert manager to send alerts to our slack channel when something goes wrong. We will also configure Grafana as our single pane of glass. Observability is one of the very key aspects of distributed application architectures, as…Observability7 min readObservability7 min read
Nov 3, 2022Chapter 8: Ingress & TLS/HTTPS with nginx, cert-manager & VaultIn this blog, we will configure our ingress to use TLS/HTTPS, to access our web application. To generate the certificates we will use Vault, and then to manage certificates we will be using cert-manager Architecture Ingress exposes the services, that we are built to the outside world. It provides the HTTP…Https7 min readHttps7 min read
Oct 29, 2022Chapter 7: Book Library React JS Front End with Firebase Authentication deployed on k8s, with GitOpsIn this blog, we will build a ReactJS application, that will provide UI to search for books, and add them to the personal library. We will be using Firebase for authentication, and Hashicorp Vault to inject some of the secrets. …React13 min readReact13 min read
Oct 25, 2022Chapter 6: Book Library Microservice — Quarkus native image using Panache ORM with Postgres backendIn this blog, we will build a quarkus native image application to store and fetch selected books, by the user. We will be using Panache ORM to access PostgreSQL to store and retrieve the user preferences and will be using PV & PVCs. Book Library Microservice, is called by the…Java8 min readJava8 min read
Oct 22, 2022Chapter 5: GitOps for BookInfoService Quarkus Application with GitHub actions and ArgoCDIn this blog, we will build the pipeline to build and deploy the Book Information service that we implemented in Chapter 3. We will be using GitHub Actions for Build and ArgoCD to deploy to our local cluster. In Chapter 4 we walked through the overall GitOps architecture and approach…DevOps6 min readDevOps6 min read
Oct 19, 2022Chapter 4: GitOps Architecture with GitHub Actions & ArgoCD with Slack notificationsIn this blog, we will build the GitOps infrastructure for the project. We will be using GitHub actions for the continuous integration and ArgoCD for deploying the application to the Kubernetes cluster. We will also be integrating the pipeline with Slack, to notify the status. GitOps Architecture In Chapter 3, we build…Argo Cd7 min readArgo Cd7 min read
Oct 16, 2022Chapter 3: Book Information Microservice — Quarkus native image with Redis cacheIn this blog, we will build a quarkus native image application to fetch Book information, by calling Google Books API, and storing the results in the Redis cache for future use. We will also learn how to inject Vault secrets into a quarkus application In the previous chapter, we configured…Kubernetes9 min readKubernetes9 min read
Published in AWS Tip·Oct 6, 2022Chapter 2: Secure secrets with Hashicorp VaultIn this blog, we will walk through the complete process of setting up Vault in the Kubernetes cluster and using Secret Injection to consume the secrets in our Pods. In Chapter 1, we went through the high-level architecture and the design of the Bozobooks.com application. Before we start building our…Vault8 min readVault8 min read
Oct 5, 2022Chapter 1: Bozobooks.com Scope & ArchitectureA hands-on walkthrough of building and deploying a full-stack microservices application on k8s, along with supporting framework components Hello readers, coders, architects … Since I released my book on GraalVM, I have taken a break, from writing. During the break, I have been working on implementing the case study, I…Kubernetes4 min readKubernetes4 min read
Published in FAUN Publication·Jan 16, 2022Building GraalVM Native Image of a Polyglot Java+numpy applicationOne of the greatest features of GraalVM is to provide a universal runtime for running code written in different languages. This opens up a huge opportunity to reuse the existing tested and hardened code, without rewriting it in target languages. This is very handy at times where code is tough…Java9 min readJava9 min read
