Kubernetes

This blog is for those who does not know about socket and it's types and in this there is only for basic ideas about the socket and its types

Cloud readiness - This is a transcript of a session I gave at EMEA Red Hat Tech Exchange 2017, a gathering of all Red Hat solution architects and consultants across EMEA. It is

Making your images consumable - This is a transcript of a session I gave at EMEA Red Hat Tech Exchange 2017, a gathering of all Red Hat solution architects and consultants across EMEA. It is

Installation of AWX (Ansible Tower) on top of OpenShift, Set a dynamic inventory to access the servers from AWS

Introduction As you may already know, the Red Hat Mobile Application Platform (RHMAP) is available as a self-administered, on-premise, installation as well as a hosted platform. This offers more opportunities for customers to benefit from increased security, flexibility and control over their platform. Note: This installation is strictly for sandbox demonstration purposes. In the interests of simplicity, it will be running on infrastructure that will not be secure so no confidential data should be stored in this instance. Preparation Before...

Container Images for OpenShift – Part 2: This is a transcript of a session I gave at EMEA Red Hat Tech Exchange 2017, a gathering of all Red Hat solution architects and consultants across EMEA. It is

Container Images for OpenShift - Part 1: This is a transcript of a session I gave at EMEA Red Hat Tech Exchange 2017, a gathering of all Red Hat solution architects and consultants across EMEA. It is

When you build your .NET Core project, NuGet packages are retrieved from nuget.org by default. Sometimes, however, you might want to use a local NuGet repository. For example, you may want to: use private NuGet packages, but you don't want anyone except your associates to see them. cache a NuGet repository at a server near your build servers leave your build server disconnected from the Internet. I'll explain how to set up a private NuGet server on OpenShift and how...

We hear about Microservices a lot nowadays. Its implementation requires us to deal with new challenges. A key question that comes with using microservices is how to handle interactions in an asynchronous way. The answer to that is messaging. Among other things, messaging features the following: Loose coupling since it decouples client from services. Improved availability since the message broker buffers messages until the consumer is able to process them. Supports a variety of communication patterns including request/reply, notifications, request/async...

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According to Wikipedia, entropy is the randomness collected by an operating system or application for use in cryptography or other uses that require random data. Entropy is often overlooked, misconfigured or forgotten and it can originate in sporadic errors whether it can be timeouts, refused connections, etc. Such errors are difficult to debug as the errors happen only when there is not enough entropy available. This article tries to explain briefly how to check if this can be a problem...

In the Part-I of the series, we saw how we used ConfigMaps in configuring spring boot application Kubernetes. ConfigMaps are OK when we use simple configuration data that do not contain sensitive information. When using sensitive data like API Keys, passwords etc. Secrets are the preferred and recommended way. In this second part of the series, we will explore configuring spring boot on kubernetes with Secrets. The sources for this blog post are available in my github repo. Setup You...

ConfigMaps is the Kubernetes counterpart of the Spring Boot externalized configuration. ConfigMaps is a simple key/value store, which can store simple values to files. In this post "Configuring Spring Boot on Kubernetes with ConfigMap", we will see how to use ConfigMaps to externalize the application configuration. One of the ways configuring the spring boot application on kubernetes is to use ConfigMaps. ConfigMaps is a way to decouple the application specific artifacts from the container image, thereby enabling better portability and...

When the developers plan to deploy Spring Boot application on Kubernetes, the first question comes to a spring developer's mind is "Can I use Spring Config server?" Spring Config server is a de-facto way of doing centralized configuration of a distributed application. Yes, we can use Spring Config server, but let’s think of some constraints that Spring Config server can have in a typical Enterprise deployment: No access to the internet from production. This means I can’t use the default...

The Azure Openshift 3.6 reference architecture now automatically deploys and integrates SSO. The reference architecture, which is available in a scalable full high-availability configuration and a single vm for trials is part of openshift-ansible-contrib git repo. Red Hat Single Sign-On (RH-SSO) is based on Keycloak project and enables web applications by providing Web single sign-on (SSO) capabilities based on popular standards such as SAML 2.0, OpenID Connect and OAuth 2.0. This makes it easy to configure one or more authentication...

This blog to help my fellow developers who are working on "Docker" and " Kubernetes" simultaneously. Because, they know that Kubernetes runs over docker-engine but there is a catch, that: 1. Containers running on Docker, and 2. Containers running inside of a Kubernetes Pod, are absolutely running isolated, without even knowing each other's existence. But, we are developers, so there are chances where we might come across a situation where we desperately need to let the Docker formatted containers communicate...

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A recent Gartner survey suggests that roughly 50% of the respondents planned to implement continuous delivery and DevOps by year-end 2017 in order to deliver services faster, more often and more reliably. State of DevOps Report by Puppet Labs suggests that high-performing organizations that focus on automation and DevOps are able to reduce their lead-time for delivering a change by a factor of 440 and deliver services 46 times more often. These results have helped to make DevOps adoption a...

Introduction New Relic is an application-monitoring platform that provides in-depth analytics and analysis for applications regardless of the type of environment where they are deployed, or as New Relic put it themselves: “Gain end-to-end visibility across your customer experience, application performance, and dynamic infrastructure with the New Relic Digital Intelligence Platform.” - New Relic You might ask why there’s a use for New Relic’s monitoring capabilities when Red Hat Mobile Application Platform (RHMAP) and OpenShift Container Platform both offer insights...

For many organizations, a big part of DevOps’ appeal is software automation using infrastructure-as-code techniques. This book presents developers, architects, and infra-ops engineers with a more practical option. You’ll learn how a container-centric approach from OpenShift® can help your team deliver quality software through a self-service view of IT infrastructure.

Are you attending RHTE (Red Hat Tech Exchange) APAC, interested in IoT and like to tinker with real hardware? Come join us for an evening of fun at CodeStarter IoT hackathon on Thursday, Sep 7th. The use case for this CodeStarter emulates Industry 4.0 smart factory scenario. This end-to-end IoT solution will allow the participants to interact with: Raspberry Pi connected to sensors/actuators to emulate the factory environment. Java/OSGi based middleware ( Eclipse Kura) for simplified access to underlying device...

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Creating, associating, and using a database with a MicroProfile-based microservice In this blog post, I will cover how to create, populate, and associate a database to your MicroProfile-based microservice. I will also cover how to modify your microservice so that it makes use of the database. This is the continuation of the " A MicroProfile-based microservice on OpenShift Container Platform - Part 1; Creating a simple MicroProfile-based microservice and deploying it to OpenShift Container Platform" blog post and it assumes...

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Creating a simple MicroProfile-based microservice and deploying it to OpenShift Container Platform Eclipse MicroProfile is an open source specification for Enterprise Java microservices. It is a community of individuals, vendors, and organizations collaborating and working on innovative microservices patterns for Enterprise Java within the context of modern development, architectures, and underlying infrastructures, e.g. health checks, fault tolerance, metrics, and security propagation within a cloud environment. Its first release was based on 3 Java EE JSRs/libraries/APIs, but this does not necessarily...

OpenShift Container Platform (OCP) offers many different types of persistent storage. Persistent storage ensures that data should be insistent between builds and container migrations. When choosing a persistent storage backend to ensure that the backend supports the scaling, speed, dynamic provisioning, RWX/RWO support and redundancy that the project requires. Container-Ready Storage (CRS), or native Gluster for OCP, is defined by the concept of persistent volumes, which are OCP created objects that allow storage to be defined and then used by...

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A lot of employees work on customers' sites and need to engage people every single day. Mobile Internet isn't something broadly reliable, which makes demonstrations of cloud products and complex solutions undoable. After thinking about it for some time, I finally got something good, which I'd like to share with you in this post. The Requirements As stated, mobile connection isn't something enjoyable for people always on move. This situation requires an entirely offline solution to get the job done...

What is it about? OpenShift has seen a lot of traction with the release of its third version based on Kubernetes a couple of years ago. More and more companies after a thorough evaluation of OpenShift Container Platform (OCP) have built an on-premise or in the cloud PaaS. With the next step, they have started to run their applications on OCP. One of the important aspects of running applications in production is the capacity of quickly restoring services to the...

JBoss Tools 4.5 and Red Hat JBoss Developer Studio 11.0 for Eclipse Oxygen are here waiting for you. Check it out! Installation JBoss Developer Studio comes with everything pre-bundled in its installer. Simply download it from our Red Hat Developers and run it like this: java -jar jboss-devstudio-.jar JBoss Tools or Bring-Your-Own-Eclipse (BYOE) JBoss Developer Studio requires a bit more: This release requires at least Eclipse 4.7 (Oxygen) but we recommend using the latest Eclipse 4.7 Oxygen JEE Bundle since...

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