Blog Archives

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

Atomic Host.

If you like containers, at some point you will deploy them into production. And you will need a dedicated server to host them. Atomic Host is the RedHat solution for this. It is a lightweight version of RHEL/CentOS 7 (there

Posted in RHEL7

RHEL 7 CPU governor.

I don’t know if you have already heard about CPU governor. With the global warming, IT culture should integrate the various mechanisms available for reducing computer consumption. In a perfect world, during the idle periods servers should adjust their clock frequency

Posted in RHEL7

RHEL 7.4 planned features and other news.

At the Red Hat annual summit the main planned features of RHEL 7.4 were disclosed. You can find them in a dedicated page. In addition, as of today, the RHEL 7.4 Beta has been released. Release notes are available here. Also,

Posted in RHEL7

Red Hat Summit 2017.

The annual Red Hat summit 2017 happened last week. The first videos are available on the Red Hat summit channel on Youtube. Some presentations have already been published about: the Red Hat security roadmap, the Red Hat Ceph storage roadmap, the Red

Posted in RHEL7

Do you know Cockpit?

Until recently I didn’t know what was exactly the Cockpit project. I thought it was a new complicated panel for administrators looking for a GUI. Difficult to install, to maintain, to understand … In fact, it is just the contrary:

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: 10 minutes.
Set up a caching-only DNS server to forward DNS queries.

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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 RHCSA 7 topic

What do you think is the most difficult RHCSA 7 topic?

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Poll for most difficult RHCE 7 topic

What do you think is the most difficult RHCE 7 topic?

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