Introduction In this new article we discuss about Network Policies. What is a Network Policy ? A network policy is a specification of how groups of pods are allowed to communicate with each other and other network endpoints. NetworkPolicy resources use labels to select pods and define rules which specify what traffic is allowed to the selected pods. How …
Introduction In this new article we discuss about Services. What is a Service ? Once you have deployed your pods or deployments, you may want to be abel to configure a frontend which will find out and keep track of which IP address to connect to, so that the frontend can use the backend part …
Introduction In this new article we discuss about ReplicaSets. What is a ReplicaSet ? A ReplicaSet’s purpose is basically to maintain a stable set of replica Pods running at any given time. As such, it is often used to guarantee the availability of a specified number of identical Pods. For example, if we only have …
Introduction In this new article we discuss about Deployments. What is a Deployment? An entity called “ReplicaSet” ensures that a specified number of pod replicas are running at any given time. However, a Deployment is a higher-level concept that manages ReplicaSets and provides declarative updates to Pods along with a lot of other useful features. Therefore, …
Introduction We have seen together what Kubernetes was : an open source container orchestration system. Today, we will see how Kubernetes is built, how it works and 2 ways to deploy easily a lab environment Kubernetes Architecture In this first part, let’s see the basic concepts and components in a Kubernetes infrastructure. Nodes Nodes, or …
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Introduction In this new article we will discuss about Namespaces and Imperative commands ! 🙂 What is a Namespace and how to create them ? Kubernetes supports multiple virtual clusters backed by the same physical cluster. These virtual clusters are called namespaces. Namespaces are intended for use in environments with many users spread across multiple teams, or …
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Quick reminder on Containers Before starting this new series of articles on Kubernetes, it is important to be sure that basics concepts like containers and orchestration are understood. Containers are designed to benefit for both developers and system administrators. Indeed, developers need to focus on writing code without worrying about the system that it will ultimately be running …
Introduction In this new article we will start to see Kubernetes concepts. The first one is PODS. We will also see how to create a YAML file. But let’s begin by explaining what is a POD. What is a POD ? If you have read my previous article about containers on Dockers, you are already …
Introduction In the last article we have seen together how many features Jelastic Cloud offered. The Market Place is one of them which will allow the customer to quickly deploy several applications : In this article, we will see how to install a WordPress Cluster easily. How to install a WordPress Cluster through the Market Place …
Introduction Jelastic, founded in 2011, is a cloud platform software vendor that provides Multi-Cloud PaaS (Platform as a Service) based on container technology for hosting service providers. In this article, we will take a quick overview of this product and see together the main features availables. What is PaaS ? To begin with, let’s describre …