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H ow do I install and setup Docker container on an RHEL 7 (Red Hat Enterprise Linux) server? How can I setup Docker on a CentOS 7? How to install and use Docker CE on a CentOS Linux 7 server? Docker is free and open-source software. It automates the deployment of any application as a lightweight, portable, self-sufficient container that will run virtually anywhere. Typically you develop software on your laptop/desktop. You can build a container with your app, and it can test run on your computer. It will scale in cloud, VM, VPS, bare-metal and more. There are two versions of docker. The first one bundled with RHEL/CentOS 7 distro and can be installed with the yum. The second version distributed by the Docker project called docker-ce (community free version) and can be installed by the official Docker project repo. The third version distributed by the Docker project called docker-ee (Enterprise paid version) and can be installed by the official Docker project repo.  This page shows...

Installing OpenStack has always been challenging. Due to the complexity and varity of design choices involved in setting up OpenStack, automated installers are rare. For those who need a small but realistic setup, to be used either for development or learning, a manual installation using the desired distribution's packages has been the typical solution. Distribution packages simplify the process, however they come with compromises. First, packages are only updated monthly, so the wait for patches is slow. Additionally so far the QA process for the various distributions is a little spotty, so the if a package is broken when the update occurs is may be a month until the problem is fixed. Secondly applying a much needed patch from source may break a package installation or have the patch overwritten when a package update occurs. For those testing or developing OpenStack, using a package based install would be impossible, since the packagers place files in difference locations an...