Red Hat Docker-Centric Atomic Host Linux Distro Debuts
The Docker-centric Red Hat Enterprise Linux Atomic Host 7.1 is generally available, and RHEL 7.1 also came out today.Red Hat's Enterprise Linux Atomic Host 7.1 release is generally available today, providing users with the promise of a more secure and optimized operating system for Docker containers. The Atomic Host release comes alongside the Red Hat Enterprise Linux 7.1, which also debuts today. Red Hat first announced its Project Atomic effort in April 2014 as part of a broad push into the Docker Linux container space. While Docker is supported on the main Red Hat Enterprise Linux 7 operating system edition, that OS is a general-purpose system and is not as tightly optimized for Docker as is Atomic Host. Subhendu Ghosh, senior technology product manager at Red Hat, explained that a lot has happened since the initial announcement of Project Atomic. One of the big shifts has been Red Hat's embrace of the Google-led Kubernetes open-source project for container orchestration. Red Hat has embraced Kubernetes for its container offerings, and the company is now the second-largest contributor in the community after Google, Ghosh said. "Red Hat Enterprise Linux Atomic Host includes Kubernetes as the orchestration engine for multi-container, multi-host applications, managing the launch, state and communication for each container and host," Ghosh told eWEEK. "In terms of changes, Kubernetes superseded geard for orchestration, which was demoed at Red Hat Summit in April 2014."
Red Hat is also leveraging Kubernetes as a core part of its upcoming OpenShift 3 platform-as-a-service (PaaS) release.
"It uses a Git-like method to deploy the operating system onto a disk and allows the co-location of multiple aggregate file systems," Ghosh explained. "Via OSTree, we will make updates available frequently, delivering bug fixes as well as implementing new features." The idea of incremental transactional updates and rollback capability is also something that Red Hat's Linux rival Canonical has been pursuing with its Snappy Ubuntu Linux efforts.