The History of Containers

Given the recent massive spike in interest in Linux Containers, you could be forgiven for wondering, “Why now?”. It has been argued that the increasingly prevalent cloud computing model more closely resembles hosting providers than traditional enterprise IT, and that containers are a perfect match for this model.

Despite the sudden ubiquity of container technology, like so much in the world of open source software, containerization depends on a long series of previous innovations, especially in the operating system. “One cannot resist an idea whose time has come.” Containers are such an idea, one that has been a long time coming.

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See You at ContainerCon in Seattle

If you’re looking at running Linux containers, you should be heading to ContainerCon in Seattle next week. Co-located with LinuxCon and CloudOpen, ContainerCon is where leading contributors in Linux containers, the Linux kernel, and related projects will get together to educate the community on containers and related innovations.

Red Hatters are contributing to over 40 seContainerConssions on this year’s agenda, including a keynote from Red Hat VP of Engineering Matt Hicks. In “Revolutionizing Application Delivery with Linux and Containers,” Matt will focus on how Linux containers are changing the way that companies develop, consume and manage applications and will emphasize how open source communities and projects like Docker and Kubernetes are delivering this next wave of enterprise application architecture.

If you’re attending ContainerCon, check out Matt’s keynote and some of the sessions below:

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Architecting Containers Part 1: Why Understanding User Space vs. Kernel Space Matters

Perhaps you’ve been charged with developing a container-based application infrastructure?  If so, 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 environment, there are three important things that developers, architects, and systems administrators, need to know

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Understanding the Changes to ‘docker search’ and ‘docker pull’ in Red Hat Enterprise Linux 7.1

If you’re working with container images on Red Hat Enterprise Linux 7.1 or Red Hat Enterprise Linux Atomic Host, you might have noticed that the search and pull behavior of the included docker tool works slightly differently than it does if you’re working with that of the upstream project. This is intentional.

When we started the planning process for containers in RHEL 7.1, we had 3 goals in mind:

  1. Give control over the search path to the end-user administrator
  2. Enable a federated approach to search and discovery of docker-formatted container images
  3. Support the ability for Red Hat customers to consume container images and other content included as part of their Red Hat Subscription

The changes we implemented, which are documented on the Red Hat Customer Portal, affect three different areas of the tool:

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Forrester’s Dave Bartoletti Reports on Container Usage at Red Hat Partner Conference

20150408_110418Yesterday, at Red Hat’s annual North America Partner Conference (in Orlando, FL), Dave Bartoletti, principal analyst with Forrester Research, told hundreds of attendees about a recently completed market research program undertaken by Forrester and sponsored by Red Hat. In this study, 194 developers and IT decision-makers at mid- to large-size companies were surveyed as to their plans and expectations for container technologies.

What they shared, indicates that

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Welcome to the World, Red Hat Enterprise Linux Atomic Host

Today marks an exciting milestone for Red Hat as we share news of 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 the world’s leading enterprise Linux platform, Red Hat Enterprise Linux Atomic Host enables enterprises to embrace a Red Hat Enterprise Linux Atomic Hostcontainer-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.

An application architecture based on Linux containers requires not only the tools to build and run containers, but also an underlying foundation that is secure, reliable, enterprise-grade, with an established lifecycle designed to meet the ongoing requirements of the enterprise over the long term. The release of Red Hat Enterprise Linux Atomic Host supports Red Hat’s commitment to make Linux containers a stable and reliable component of enterprise IT across the open hybrid cloud.

Red Hat Enterprise Linux 7 Atomic Host provides many benefits, including

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Top 3 Reasons to Run Container-Based Applications on Red Hat Enterprise Linux 7

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 increase efficiency without compromising their existing investments. With this in mind, the Red Hat Enterprise Linux team takes great care in evaluating new technology to ensure that it is introduced in a manner that is minimally intrusive (if at all) and is a natural fit for the platform. Support for Linux containers and the ability to host container-based applications are great examples of this and Red Hat Enterprise Linux 7 stands ready for the challenge.

Creating and operating application containers via process isolation is not a new concept. Red Hat Enterprise Linux 6 sowed the seeds for this way back in 2010 with the introduction of Control Groups (cgroups). Since that time there have been many exciting developments in this area with active participation from Red Hat. Building upon cgroups functionality, enhancements to the kernel combined with an easy-to-use container format (Docker) make now an opportune time to consider deploying container-based applications on Red Hat Enterprise Linux 7.

Here are the top three reasons to consider Red Hat Enterprise Linux 7 as the host for your container-based applications

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Top 7 Reasons to Use Red Hat Enterprise Linux Atomic Host

In November we announced Red Hat Enterprise Linux 7 Atomic Host Public Beta, a small footprint, container host based on Red Hat Enterprise Linux 7.  It provides a stable host platform, optimized for running application containers, and brings a number of application software packaging and deployment benefits to customers.

What are the top 7 reasons to deploy containers on Red Hat Enterprise Linux 7 Atomic Host?

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Red Hat Enterprise Linux 7 Atomic Host Beta: Tell Us What You Think

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It’s been one week since we announced the beta for Red Hat Enterprise Linux 7 Atomic Host and we’re looking for your feedback. If you’ve downloaded and installed the beta, this is your chance to tell us what you think, and what you’d like to see in the product moving forward.

TechValidate is conducting a short, 5-minute survey on behalf of Red Hat. Why should you participate?

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