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Author: Grzegorz Juszczak

Fedora DNF rollback RPM package update, removal, installation

February 6, 2017February 6, 2017 No Comments

DNF is a next generation package manager for RPM-based Linux distributions, commonly used in newest Fedora releases. DNF is a Yum succesor, which provides Yum backward compatibility, but one of aspects, which make DNF a powerful package manager is the […]

Grzegorz Juszczak Linux

Mount WebDAV remote storage in Fedora Linux using davfs2 driver

February 5, 2017March 2, 2017 No Comments

WebDAV (Web Distributed Authoring and Versioning) is an extension of the Hypertext Transfer Protocol (HTTP) that allows clients to perform remote Web content authoring operations. The WebDAV protocol provides a framework for users to create, change, copy, move, lock and […]

Grzegorz Juszczak Linux, Storage

Install Jenkins on Fedora 23 from RPM via DNF package manager

January 25, 2017January 26, 2017 1 Comment

Jenkins is a popular and open source automation server written in Java, which helps automate the non-human part of the whole software development process. Jenkins supports BASH shell scripts, can be integrated with version control systems and it’s builds can […]

Grzegorz Juszczak Linux

Create tenant in OpenStack Newton using command line interface

December 28, 2016March 3, 2017 No Comments

OpenStack comes out of the box with it’s dashboard called Horizon. Horizon provides GUI, which let us manage our OpenStack environment in pretty easy and inuitive way. However basic tasks, like tenant creation or instance commissioning, can be time consuming […]

Grzegorz Juszczak Bash, Cloud Computing

Install OpenStack Newton All In One with Heat Service on CentOS 7

December 11, 2016December 23, 2016 10 Comments

In OpenStack all-in-one configuration all OpenStack nodes (controller node, compute node, network node) are installed on a single machine. All in one configuration can be quickly deployed for testing purposes and is often recommended for developers to test their applications […]

Grzegorz Juszczak Cloud Computing

Install Ansible on Fedora via DNF from RPM packages

December 10, 2016December 11, 2016 No Comments

Ansible is a simple open-source automation tool that can automate cloud deployment, application deployment or Linux OS maintenance. Comparing Ansible to other automation tools (i.e. Puppet), it’s the simplest tool, because it’s agentless. Ansible once installed on a control node, […]

Grzegorz Juszczak Linux

GRUB 2 Custom Splash Screen on RHEL 7 UEFI and Legacy ISO Image

December 4, 2016October 11, 2018 No Comments

GRUB2 Linux Boot Loader provides few customization options, that can transform it into an attention drawing eye candy. It’s main feature is the possibility to customize the splash screen being displayed with GRUB 2 menu entries upon system boot. This […]

Grzegorz Juszczak Linux

How to Install VirtualBox 5.1 on Fedora 23 from RPMs

November 17, 2016November 23, 2016 No Comments

Oracle VM VirtualBox is a flexible open-source hypervisor for x86 computers from Oracle Corporation initially developed by Innotek GmbH. It runs on many platforms including: Linux, Windows, Solaris, providing great virtualization environment to run multiple VMs at a time. In […]

Grzegorz Juszczak Linux, Virtualization

How to find Linux filesystem by Label or UUID using findfs, lsblk, blkid

November 2, 2016November 2, 2016 No Comments

Linux includes by default a bunch of useful filesystem tools that can be used to locate filesystems or partitions with specified tags or display the whole list of block devices along with their labels, universally unique identifiers (UUIDs) or default […]

Grzegorz Juszczak Linux

How to install Spotify on Fedora 23 from RPM package

September 18, 2016September 18, 2016 No Comments

Spotify is a music, podcast, and video streaming service that provides digital rights management–protected content from different record companies. Spotify provides access to over 30 million songs, with more music being added approximately every day including albums, EPs, and singles. […]

Grzegorz Juszczak Linux

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