alezzandro.com

Understanding OpenShift Security Context Constraints

OpenShift gives its administrators the ability to manage a set of security context constraints (SCCs) for limiting and securing their cluster. Security context constraints allow administrators to control permissions for pods using the CLI. SCCs allow an administrator to control the following: Running of privileged containers. Capabilities a container can request to be...

Managing temporary files with systemd-tmpfiles on Red Hat Enterprise Linux 7

Have you ever used a temporary directory? I’m guessing if you use a computer, you’ve used one of these. It’s a core feature of nearly every operating-system. To ensure system stability, you should always check that filesystems on which a temporary directory resides don’t get full — running out of...

Setup OpenShift's requirements through Ansible

Recently I've been involved in a OpenShift deployment for a customer's POC environment with a very time-limited constraint. For that matter I've tried to handle all the necessary manual steps with the help of Ansible.   PLEASE NOTE: You can launch the script from your laptop, a node outside or...

Ansible and Vagrant: setup your testing lab in minutes!

IntroductionLooking at the upcoming sunset of OS1 platform and moving around different customer's sites, with all the network troubles you may expect, having a fast and always reliable way for creating a test lab could be very helpful. As you know Vagrant (from Hashicorp) established itself as one of the...

How to create RHEL based Vagrant boxes

Introduction  How many times you needed a fast-way to test your POC? Vagrant is a system tool that lets you easily start and stop a virtual machine exposing the only thing you need: ssh console.   Every vagrant box is composed by a disk image file, some metadata related to...

Deploy your own git server on OpenShift v3 with Gogs container!

Please note: you may find an updated version of this howto at GitHub - alezzandro/openshift-gogs-template: Deploy your own git server on OpenShift v3 with Gogs container!   With this document I'll show you the easy steps to deploy an integrated git server on your existing OpenShift v3 platform. I'll describe...