Containers

A number of Red Hatters are attending this week's NodeConf.eu as one of the event sponsors, but we're also here to learn more about Node.js and listen to some great sessions. Plus, I've met probably a dozen Red Hatters for the first time - most of whom are part of the Red Hat Mobile Application Platform team (formerly FeedHenry). Another nice benefit for this event is that it's in Waterford, Ireland, and specifically at Waterford Castle (TRULY - this is...

So here's are deal: We've created what we're calling "PaaS-Containers" in our IT production environment. It consists of core technologies like RHEL Atomic Host, Kubernetes, and Docker along with supporting CI/CD components like Jenkins together as part of an offering that supports the end-to-end automated deployments of applications from a code-commit event through automated testing and roll-out through multiple environments (dev, QA, stage, prod). Oh, did I mention that it's also integrated with our enterprise logging and monitoring as well...

Are you getting into architecting for containers? Here's a repost of my article on rhelblog.redhat.com. Perhaps you’ve been charged with developing a container-based application infrastructure? If yes, you most likely understand the value that containers can provide to your developers, architects, and operations team. In fact, you’ve likely been reading up on containers and are excited about exploring the technology in more detail. However, before diving head-first into a discussion about the architecture and deployment of containers in a production...

What are user namespaces? Sticking with the apartment complex analogy, the numbering of users and groups have historically been the same in every container and in the underlying host, just like public channel 10 is generally the same in every unit in an apartment building. But, imagine that people in different apartments are getting their television signal from different cable and satellite companies. Channel 10 is now different for each person. It might be sports for one person, and news...

Fresh from Red Hat Summit, Lars Herrmann, who is responsible for Red Hat's container strategy, shares Red Hat's container strategy at during this Red Hat Summit 2015 session: https://youtu.be/J3d8tf_Fcvg Lars does a great job explaining: the value of containers and further explains them with "the most interesting application in the world" the consistency across traditional and cloud-ready applications application portability linkages to IaaS and PaaS the roles of container certification and registries more...

From the buzz on Twitter and blog posts, you could feel that ECMAScript 6 was finally coming. It has many things we’ve wanted for years, so it makes sense to start new projects with it in mind. ECMAScript 6 Others have written in depth about various ECMAScript 6 features. I’d like to focus just on one: module loading. There is no common way to load your ES6 modules natively in the browsers. For example babel, has support for three different...

So Docker containers are all the rage, right? (If you didn't know this, you do now.) :) For a while now, Red Hatters have already been doing a ton of upstream container work on Docker, Kubernetes, and a new item called Nulecule. But while Docker containers have skyrocketed in popularity, there's been no convenient means to set up a development environment for building containerized apps. Wouldn’t it be handy to develop YOUR containerized apps for Red Hat Enterprise Linux from...

As part of our participation in hundreds of open source communities, Red Hat engineers are often involved in research and development efforts that may or may not become a part of Red Hat's supported offerings. Intel's Data-plane Development Kit (DPDK) is a set of libraries and drivers for Linux and BSD built for fast packet processing, for the burgeoning " Network Function Virtualization", or NFV discipline. Typical verticals interested in turning Linux boxes into packet-processing machines are telecom, financial services...

Imagine this: deploy an application from code-commit to qa, validate through automated testing, and then push the same image into production with no manual intervention, no outage, no configuration changes, and with full audibility through change records. A month-and-a-half ago, we formed a tiger team and gave them less than 90 days to do it. How? Build an end-to-end CI/CD environment leveraging RHEL Atomic 7.1 as the core platform and integrating with key technologies like git, Jenkins, packer.io, in a...

Linux Containers combine well-established Linux kernel technologies such as namespaces, SELinux, cgroups and iptables with incredible ease of use and exceptional performance. For customers looking for the lowest possible network latencies and reduced CPU overhead coupled with the deployment advantages of Linux containers, Red Hat's new Accelerating Red Hat Enterprise Linux 7-based Linux Containers with Solarflare OpenOnload whitepaper provides installation, configuration and tuning guidance for Docker containers running on Red Hat Enterprise Linux with Solarflare OpenOnload network acceleration. The whitepaper...

Dan Walsh wrote this great article for opensource.com. I've recently learned from Dan that SELinux and containers are excellent complements to each other - kind of like tea and scones, peanut butter and jelly, Laurel and Hardy. (Which one of these did you need to google?) As container applications become finer grained, SELinux becomes really easy to use (for both dev and ops) for securing containers. Here's an excerpt from Dan's article - click through to read the whole thing...

Posted on March 18, 2015 by Bhavna Sarathy of Red Hat. Over the last 18 months, especially since the general availability of Red Hat Enterprise Linux 7, “containers” have emerged as a hot topic. With the more recent introduction of Red Hat Enterprise Linux Atomic Host, an operating system optimized for running the next generation of applications with Linux containers, one might wonder… what about virtualization? In that the benefits of containerization seem to overlap those of traditional virtualization, how...

Here are excerpts from today's announcement - an ecosystem with container development tools to containerize and certify applications: "Red Hat today announced the launch of the first certified, end-to-end ecosystem program for Linux containers based on Docker, a key component of the company’s vision for containerized applications unveiled in March 2014. Leveraging Red Hat’s vast network of thousands of partners and independent software vendors (ISVs), this ecosystem program is designed to enable the design, development and delivery of certified, trusted...

The rise of the purpose-built Linux distribution Recently, several purpose-built distributions have been created specifically to run Linux containers. There seem to be more popping up every day. For our part, in April 2014 at the Red Hat Summit, Red Hat announced its intention to deliver a purpose-built, container-optimized version of Red Hat Enterprise Linux 7 called RHEL Atomic Host. After over a year in the making, we are excited that launch day has finally come! What's important to know...

Red Hat "has announced the general availability of Red Hat Enterprise Linux 7 Atomic Host, an operating system optimized for running the next generation of applications with Linux containers." "Based on RHEL, Red Hat Enterprise Linux Atomic Host enables enterprises to embrace a container-based architecture to take advantage of the benefits of development and deployment flexibility and simplified maintenance, without sacrificing performance, stability, security, or the value of Red Hat’s vast certified ecosystem. "For building and maintaining container infrastructure, Red...

This article was written by Red Hat's Siddharth Nagar, RHEL 7 product manager. "As product manager for Red Hat Enterprise Linux 7, part of my job is to ensure that the latest version of our flagship product adheres to our promise of stability, reliability, and security. In addition, as Red Hat Enterprise Linux 7 is Red Hat’s latest enterprise Linux platform, it also needs to incorporate new innovations in technology to help our customers gain business advantage, reduce costs, and...

Lately I've been busy working on an Eclipse plugin that will support a wide range of docker functionality. Some of that has involved looking at some docker client libraries, figuring out how it works in one implementation, and seeing how this can be ported to other implementations. While the Docker Remote API is well documented, it can still be tricky to get things right. When I'm debugging some failed interaction, I've found socat to be very useful. Let's say we...

Linux containers are disrupting traditional application development and deployment models, enabling businesses to explore new, better ways to deliver products and services. How are organizations like yours using containers? Read more about this webinar and register today: Transform Application Delivery with Containers | A Red Hat Virtual Event | Red Hat Enterprise Linux Blog.

Reposted from http://www.redhat.com/en/about/events/game-changing-it-trends-red-hat-virtual-event "Hybrid IT is becoming the “new normal,” and open source use is on the rise in today’s enterprise landscape. Containers are taking on a bigger role, and new, innovative management solutions are becoming a requirement. Join the Red Hat® virtual event to learn about the top technology trends that will affect the way you build and deploy infrastructure and applications in 2015 and beyond. "As part of this discussion, IDC vice president Mary Johnson Turner will reveal...

The Winter of Code is a challenge for the best application built on OpenShift. Winter of Code 2015 challenge is organized (and judged) by OpenShift developers from Red Hat Czech as part of the Developer Conference which takes place from February 6th to February 8th in Brno, Czech Republic. From most practical to the most crazy, submit your applications and win fabulous prizes, such as Google Nexus Tablet and much more! The winners on each category will be announce on...

Containerizing things is particularly popular these days. Today we'll talk about the idioms we can use for containerization, and specifically play with apache spark and cassandra in our use case for creating easily deployed, immutable microservices. Note: This post is done using centos7 as a base for the containers, but these same recipes will apply with RHEL and Fedora base images. There are a few different ways to build a container. For example, for beginners, you can build a container...

Il y a quelques mois, j'ai développé et publié une petite extension Puppet pour tuned-adm. En effet, cette commande est une fonctionnalité assez appréciable de RHEL, et il m'a semblé donc pertinent d'évoquer cette dernière sur Red Hat developer blog. Tour d'horizon de 'tuned-adm' Pour faire court, cette commande va s'occuper des nombreux fins réglages du système d'exploitation pour vous, selon l'usage que vous souhaitez faire de ce dernier. Par exemple, si vous utilisez le système comme un simple serveur...

This blog is a continuation of " Creating custom Atomic trees, images, and installers - Part 1." In part one, we learned how to compose our own atomic trees and consume them in a guest. In part two, we will learn how to create our own disk images and installer media. Creating custom disk images As mentioned in the previous blog, the subcommand imagefactory can be used to create disk images. As of this writing, the imagefactory subcommand can output...

If one thing survived all the New Year parties, it is Docker. It was hot at the end of 2014 and it looks like it is getting even hotter in 2015. And Red Hat is one of the key drivers behind the adoption of this amazing container technology. This is a short summary blog post about a bunch of resources to get you started with Java EE, WildFly and Microservices on Docker mostly collecting resources and information from the JBoss...