Few hours ago The CentOS Atomic development team has announced the availability of a new version of CentOS Atomic Host operating come this to its new version 7.5 (7.1805) This is based on CentOS Linux 7 RPM and tracking the component versions included in the Red Hat Enterprise Linux Atomic Host, this version is designed to run Docker containers.
For those who do not know CentOS yet (Community ENTerprise Operating System) I can tell you that this is a free and open source Linux distribution designed for desktop and server computers. This system always is based on the latest versions of Red Hat Enterprise Linux.
For is a binary-level fork of the Red Hat Enterprise Linux RHEL Linux distribution, compiled by volunteers from source code published by Red Hat, the main difference being the elimination of all references to brands and logos owned by Red Hat.
The objective of which is to offer the user free "business class" software. It is defined as robust, stable and easy to install and use.
About CentOS Atomic Host
The cThe main component of the Atomic Host Project is the Atomic Host , a lightweight container OS that implements these ideas. These are immutable, as each of them has an image of an upstream repository, allowing for massive deployment. Applications run in containers.
The host system is managed through rpm-ostree, an open source tool for managing bootable, immutable, and bootable file system trees from upstream RPM content. This and several other components are wrapped in the atomic command that provides a unified entry point.
It also covers Other tools that are essential for container-based immutable infrastructures, including:
- Cockpit that gives visibility to your hosts and your cluster of containers.
- Many patches and extensions to Docker for better SELinux and systemd integration.
- The Atomic Developer Bundle to facilitate containerized application development.
CentOS Atomic Host has a wide variety of versions for architectures for 64-bit (x86_64), 32-bit (i386), ARM64 (AArch64), PowerPC 64-bit (ppc64), PowerPC 64-bit Endian-compatible machines (ppc64le) and ARM-hfp (armhfp).
En this new version of CentOS Atomic Host includes new updates among which we can highlight its main components:
- atomic-1.22.1-3.git2fd0860.el7.x86_64
- cloud-init-0.7.9-24.el7.centos.x86_64
- docker-1.13.1-63.git94f4240.el7.centos.x86_64
- etcd-3.2.18-1.el7.x86_64
- flannel-0.7.1-3.el7.x86_64
- kernel-3.10.0-862.3.2.el7.x86_64
- ostree-2018.1-4.el7.x86_64
- rpm-ostree-client-2018.1-1.atomic.el7.x86_64
CentOS Atomic Host 7.1805 It has the Linux Kernel 3.10.0-862.3.2, which is the same as found in the previous version of CentOS Linux 7.5 (1804).
CentOS Atomic Host carries a release cycle according to the Red Hat Enterprise Linux Atomic Host releases. Once the fonts are published, they are rebuilt and included in new images. After the images are tested by the GIS and deemed ready, we announce them.
Download CentOS Atomic Host 7.1805
If you want to install this system, you should go to its official website and in its download section you can obtain the image of the system, the link is this.
This picture is available for you to implement on any physical machine, as well as VirtualBox or libvirt-formatted Vagrant box virtual machines, and Amazon Machine or QCOW2 images to deploy the operating system in cloud environments.
For those users who already have a version of CentOS Atomic Host 7 installed on their computers and who want to install this new version they will be able to update to the latest version of the system without the need for a reinstallation.
Esto they do it by executing the following command, for this they must open a terminal and it is necessary to be connected to the network at that time.
atomic host upgrade
Once this is done, they will only have to wait for all the necessary configuration and update packages to be downloaded and installed on their computer.
At the end of this process it is extremely necessary that they restart their computers. When you do this, when you start your system again, you will see that the changes made are already in effect.