Category: Linux

Linux is the name of the world’s most known kernel. A low-level component that enables the machine to talk to an operating system. Linux was born from the mind of Linus Torvalds in 1991 and is nowadays used on countless computers.

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Istio: the service mesh king for Kubernetes

In Kubernetes everything goes lightning fast. Every single bit could change any moment, in any container, literally. Although Kubernetes is getting more polished at each release, there still are things that are a bit rough around...

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Fedora 30 new features: Where’s CoreOS?

Fedora 30 is the newest release of 2019 of the popular power user distribution: Fedora. Fedora is the base for Red Hat Enterprise Linux and it is favored among developers. Let’s discover what will change in...

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CephFS: a beginner’s guide

Ceph is the open source Software Defined Storage (SDS) king. By default Ceph stores objects, but did you know that you can use it to store files in a filesystem too? Or even replace Hadoop’s HDFS?...

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RBD storing images in Ceph for the beginner

Ceph is the open source Software Defined Storage (SDS) king. By default Ceph stores objects, how can you use it to store block devices such as virtual machines disks? For that purpose you can use RBD,...

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Ceph pools: a beginner’s guide

So you’ve got your Ceph cluster up and running but you don’t know your way around its innards. That’s perfectly fine, this guide is for you. Let’s learn how to manage a fundamental piece of Ceph:...

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How to install ceph with ceph-ansible

ceph-ansible is the most flexible way to install and manage a full-blown Ceph cluster. Whilst not the easiest way, it isn’t too difficult and can produce production-grade clusters. Let’s take a look.

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VDO: Linux deduplication and how to use it

Following Red Hat acquisition of Permabit Technologies, the former decided to release the latter proprietary technology: VDO, as open source. But what is VDO and how can you use it?

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How to install oVirt node 4.2 on baremetal

oVirt node is the easiest way to provision a machine to use with oVirt. Installing it is pretty simple if you’ve installed Fedora/CentOS in the past. Let’s take a look at how to install oVirt node...