Blog Archives

Recent technical articles.

OpenShift / Kubernetes: Evaluating Tools Available to Deploy OpenStack on Kubernetes, Fighting Service Latency in Microservices with Kubernetes, Introducing the Resource Management Working Group, Kubernetes By Example, Minishift-1.6.0 release announcement, Getting started with Helm on OpenShift, Openshift 3.6 Reference Architecture Now Includes SSO,

Posted in Others

Fourth website anniversary.

It was at the beginning of September 2013 that I decided to create this website. The content is still very focused on RHEL 7 / CentOS 7 and it will continue to be so as we know that RHEL 8

Posted in RHEL7

CentOS 7.4 released.

Six weeks after the announcement of RHEL 7.4, it is now time for the release of CentOS 7.4, also called CentOS 7 (1708). The release doesn’t only concern x86_64 architecture but also aarch64, armhfp, ppc64 and ppc64le (see download directory

Posted in RHEL7

Latest technical articles.

Containers: A Comparison of Linux Container Images, Intel® Clear Containers and CRI-O*, OpenShift / Kubernetes: EdX: Fundamentals of Containers, Kubernetes, and Red Hat OpenShift, Various techniques for packaging Java microservices on OpenShift, How Kubernetes Initializers work, Securing Kubernetes Cluster Networking, A MicroProfile-based microservice

Posted in RHEL7

Recent technical articles.

Containers: Containing System Services in RHEL: part1 / part2, What tools RedHat puts in place in the Docker ecosystem, CRI-O, Juggling backing disks for Docker on RHEL 7 using atomic storage migrate, Signed Images from the Red Hat Container Catalog, 6

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Synthetic view of a server.

To harden a server or simply reduce its security footprint, it is very useful to get a list of the main processes running. However, it is not an obvious task to get a synthetic view like this. Using a command

Posted in RHEL7

RHEL 7.4 officially released.

Today, Red Hat announced the official release of RHEL 7.4. To know more about this new version you can read a summary of the RHEL 7.4 changes or the RHEL 7.4 Release Notes. Several points can be highlighted: docker overlay

Posted in RHEL7

Latest technical articles.

Over the past two weeks, the following technical articles have been published (or discovered): OpenShift: Minishift as a Development Environment for Node.js on OpenShift, Quick and Dirty Block Storage for OpenShift (iSCSI), Managing Secrets on OpenShift – Vault Integration, Five

Posted in Others

New recent articles.

Many technical articles were published in the last two months: OpenShift / Kubernetes: What’s new in Kubernetes 1.7? Extensibility rules, Minishift as a Development Environment for Node.js on OpenShift, KDL: A Notation to Describe Kubernetes Application Deployments, Multiple Deployment Methods

Posted in Others

Available online Linux trainings.

Until one or two years there was almost no online trainings for the RHCSA & RHCE 7 certifications. You had to take Red Hat classes or study by yourself through books. Now, companies like EdX, Udemy and LinuxAcademy to name

Posted in RHEL7

RHCSA7: Task of the day

Allowed time: 10 minutes.
Create a XFS file system of 100MB. Mount it under /mnt. Then, increase its size by 50MB.

RHCE7: Task of the day

Allowed time: 5 minutes.
Set up time synchronization with default configuration.

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Poll for favorite RHEL 7 book

What is your favorite RHEL 7 book to prepare RHCSA & RHCE exams?

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Poll for most difficult RHCE 7 topic

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