A blog about my coding adventures
Introduction We can publish and subscribe messages on AWS IoT core by establishing a connection to it. There are multiple options available for publishing and subscribing messages with AWS IoT Core. The message broker supports the use of the MQTT protocol to publish and subscribe and the HTTPS protocol to publish. You can check this … Read more
Introduction Internet of things (IoT) is pretty ambiguous. Any phrase with the word “things” in it is inevitably somewhat ambiguous, right? IoT is a popular and rich topic and depending on the view there is a lot which falls under this term. However, in this post, we will keep it to its core, just a … Read more
Introduction In previous post, we learned that Kubernetes Persistent Volume Subsystem decouples data from application pods and containers and abstracts implementation details. The main components are as follows: PersistentVolume (expose external storage to a PV) PersistentVolumeClaim (a request for persistent volume) StorageClasses (for dynamic provisioning) We then used PersistentVolume and PersistentVolumeClaim in a static provisioning … Read more
Introduction Creating PDF files is a very common requirement in many software applications. In this post we will see how to easily create PDF documents using Nodejs. So instead of building all PDF files related functionality ourselves, there is node package called PDFKit, that abstracts all this complexity and give us a nice API to … Read more
Introduction In this post, we will learn how persistence storage objects in kubernetes provide an easy way to meet storage requirements of statefull applications. In previous post, we learned how to use volume plugins for external storage and we used an AWS EBS volume for this purpose. However, we used AWS EBS volume settings directly … Read more
Introduction In previous post, we learn the basics of how storage works in kubernetes. We learned that for statefull application, we need to persist data beyond container or pod life and how kubneretes have volume plugin mechanism to help us using existing storage solutions for our applications. We then started with a very basic type … Read more
Introduction Storage is very important in every statefull application. In a typical on-premise setup, we usually have some dedicated storage e.g. a network file server, disk arrays etc. These storages will have bunch of volumes. We then expose those volumes to our servers and server will use those volumes as local disks and our applications … Read more
Introduction EKS is a managed kubernetes service and it helps us greatly by abstracting most of the infrastructural concerns regarding control plane, softwares etc. which make it easy for us to focus more on application deployment side. Earlier I have written a post which shows a simple way to deploy an application to local kubernetes … Read more
Introduction I have written few posts on kubernetes and how to start with it. Today, we will see how to start with EKS, a managed kubernetes service from AWS. In this post, we will cover the very basics e.g. EKS introduction, what necessary tools need to be installed, we will also create a cluster and … Read more
Introduction I have previously written few posts on Kubernetes basics. There we covered some building blocks and how to get started with it. Here is the high level information about the core Kubernetes resources: Pod: Manages container and container environment. Deployment: Manages pods and rolling updates. Service: Manages network routing and DNS names. you can … Read more