Install Docker CE yum repository on our CentOS 7 operating system. Installing Docker Yum Repository on CentOS 7: Therefore, we have to install EPEL yum repository first. Installing EPEL Yum Repository on CentOS 7:īy using a ssh client, connect with as root user.ĭocker CE requires some software packages that are available in EPEL (Extra Packages for Enterprise Linux) yum repository. Linux operating systems on both machines must be same, otherwise the software package versions may not matched and it won’t work. One server has access to Internet, while the other server isn’t connected with Internet. In this article, we are using two isolated CentOS 7 based Linux servers. You can read our previous guide about installation of Red Hat Atomic Host 7. Because a Community Edition (CE) with limited features is available as free while an Enterprise Edition (EE) is available with more features and a license cost.ĭocker is also provided with Red Hat Atomic Host 7, which is a RHEL 7 based operating system optimized for hosting containers. The containers are run by the host operating system Kernel, therefore, a container is much light weight as compare to a Hypervisor based virtual machine.ĭocker is an important part of today’s DevOps environments, where it is mostly used for application virtualization.ĭocker is a freemium software. Unlike virtual machines, containers may or may not have their own operating systems. These images are provided through Docker Hub (an online Docker registry).Ĭontainers are isolated from each other having their own set of binaries, libraries and configuration files. Docker uses predefined and custom images to create and run containers. Downloading Docker CE and Software Dependenciesĭocker is a computer software, that performs operating-system-level virtualization, also known as Containerization.Installing Docker Yum Repository on CentOS 7.Installing EPEL Yum Repository on CentOS 7.In this artilce, you will learn how to install Docker CE on an offline CentOS 7 machine. Docker is the most famous containerization software.
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