The emptyDir is the simplest type of Kubernetes Volume. As the name suggests, this type of volume starts out as an empty directory. When the application inside the pod runs, it can write any files to the emptyDir volume. The best use of an emptyDir Kubernetes Volume is sharing files Read more…
The default Kubernetes service provides a stable IP address that allows clients to connect to pods. However, you don’t control which pod you are connecting to. The service forwards the connection to a randomly selected backing pod. Such a service is known as the Cluster IP service. But what if Read more…
System Design has its own language. And just like with any language, it requires a specific terminology for people to communicate ideas with each other. This is where knowledge of core concepts of System Design becomes extremely useful. In this post, I will walkthrough the concepts and explain what they Read more…
Kubernetes Ingress resource can easily support TLS to handle HTTPS traffic. All you’ve to do is follow a bunch of steps to enable TLS for your Kubernetes Ingress resource. In this post, I will walk through each of those steps with examples. In case you are looking to create an Read more…
Kubernetes Ingress is an extremely flexible solution to expose services. In the previous post, we saw how to use Kubernetes Ingress to expose a Node Port service. But, in that post, we focused on a single host and a single path. However, with Kubernetes Ingress, you can configure multiple paths Read more…
Ingress means the act of going in or entering. Also, a means or place of entering or entryway. That’s the job of a Kubernetes Ingress Resource. In a previous post, we saw how to expose the Kubernetes NodePort service to the outside world. But it’s quite a primitive approach to Read more…
Services in Kubernetes facilitate internal communication within the cluster. But many times, you need to expose a Kubernetes service to the outside world or external clients. Kubernetes Node Port Service is one of the easiest ways to do so. In this post, I will explain how to create a Kubernetes Read more…
It’s a pretty common requirement to connect with an external service inside your Kubernetes cluster. For example, you might have an external API or a database running on another host. And you want your application deployed in Kubernetes to access the API or the database. Here’s what it looks like Read more…
Cluster IP service is the default service type that gets created when you create a Kubernetes service. Here’s what it looks like: The Cluster IP is a stable IP address that remains unchanged throughout the lifetime of the service. Though this service may point to multiple pods that can come Read more…
Kubernetes is the preferred system to deploy microservices. And when you have microservices, you usually want interaction between them. Since each microservice runs within its own Kubernetes Pod, you need a way for one pod to find another pod within the cluster. This is where the Kubernetes service resource plays Read more…
