Menu
Red Hat strips down for Docker

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

Subscribe here for up-to-date channel news

Follow Us

Join the New Zealand Reseller News newsletter!

Error: Please check your email address.

Tags application virtualizationopen sourceLinuxvirtualizationsoftwareRed Hatoperating systems

Featured

Slideshows

StorageCraft celebrates high achievers at its inaugural A/NZ Partner Awards

StorageCraft celebrates high achievers at its inaugural A/NZ Partner Awards

Revealed at a glitzy bash in Sydney at the Ivy Penthouse, the first StorageCraft Partner Awards locally saw the vendor honour its top-performing partners with ASI Solutions, SMBiT Pro, Webroot, ACA Pacific and Soft Solutions New Zealand taking home the top awards. Photos by Maria Stefina.

StorageCraft celebrates high achievers at its inaugural A/NZ Partner Awards
Kiwi resellers make a splash on Synnex and Lenovo RotoVegas road trip

Kiwi resellers make a splash on Synnex and Lenovo RotoVegas road trip

​Synnex and Lenovo hosted 18 resellers for an action-packed weekend adventure in RotoVegas, taking in white water rafting on the Kaituna River, as well as quad biking and dinner at Stratosfare​, overlooking Lake Rotorua at the top of Mount Ngongotaha​. Photos by Synnex.

Kiwi resellers make a splash on Synnex and Lenovo RotoVegas road trip
Show Comments