Red Hat strips down for Docker

Red Hat Enterprise Linux 7 Atomic Host contains only the tools needed for developing and running Docker containers

Reacting to the surging popularity of the Docker virtualization technology, Red Hat has customized a version of its Linux distribution to run Docker containers.

The Red Hat Enterprise Linux 7 Atomic Host strips away all the utilities residing in the stock distribution of Red Hat Enterprise Linux (RHEL) that aren't needed to run Docker containers.

Removing unneeded components saves on storage space, and reduces the time needed for updating and booting up. It also provides fewer potential entry points for attackers.

Containers are valuable for organizations in that they cleanly separate the application from the underlying infrastructure, explained Lars Herrmann, Red Hat senior director of product strategy.

Developers can focus just on the code itself, and not worry about fitting the programs to the supporting operating system and middleware. Organizations benefit from containers because their workloads can be moved around easily, from one cloud provider to another, or from an in-house deployment to a cloud deployment.

"The operations team can now optimize the infrastructure for reliability, performance, and cost," Herrmann said.

Since its debut in 2013, Docker has become popular with developers and organizations, and has been downloaded over 100 million times. The software provides a way to package an application along with its dependent libraries so it can be easily and quickly run on any Linux platform.

To help manage containers, the RHEL Atomic Host package includes Kubernetes, open source software from Google that provides a way to orchestrate the operation of large numbers of containers across multiple servers. Kubernetes provides a way to specify what each container needs, and what capabilities each run-time platform provides.

To speed updates, the distribution can be updated with new patches from Red Hat while it is still running. If there is an issue with the updated software, the distribution can be rolled back to the earlier state.

For security, each Docker container is isolated through a number of technologies, including SELinux (Security Enhanced Linux) security module, and the cgroups resource allotment tool.

Red Hat is one of a number of Linux distributors that have developed custom distributions for running Docker. Canonical has released a trimmed down version of Ubuntu, called Snappy, to address this use case. CoreOS's self-titled distribution was developed specifically for running in cloud environments, and features native Docker support.

Joab Jackson covers enterprise software and general technology breaking news for The IDG News Service. Follow Joab on Twitter at @Joab_Jackson. Joab's e-mail address is Joab_Jackson@idg.com

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.

Tags open sourceLinuxoperating systemssoftwarevirtualizationRed Hatapplication virtualization

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Joab Jackson

IDG News Service
Show Comments

Brand Post

Bitdefender 2019

Taking cybersecurity to the highest level and order now for a special discount on the world’s most awarded and trusted cybersecurity. Be aware without a care!

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?