Tagged: Advanced


If you care, backup

I won’t ever emphasize enough how much backups are important, they help in case of difficulty yet many won’t even consider backing up files… In this article you will learn why backups are important and what...

The OpenStack logo 0

OpenStack use cases and tips

OpenStack is probably one of the most fast-growing project in the history of Open Source and as such it is prone to be obfuscated by its shininess. Understanding when and even IF to employ a solution...

hard disks 0

LVM: an introductory guide to logical volumes

Logical Volume Management is easily one of the most important and useful tools in storage administration. With LVM you can easily move “partitions” (volumes) around your physical disk, have snapshots, even mirroring or live migrations across...

RAID rack server 1

How to create software RAID in RHEL 7

When it comes to combining solid performance with reliability and recoverability, RAID is sure to show up. RAID is a widely used technology in mission-critical and enterprise environments. Today we’ll talk about software RAID in Linux.

hard disks 0

Disks, partitions and file systems: a complete guide

Storage is one of the fundamentals of the modern Information Technology. We use the word storage to describe persistent data storing, something that doesn’t disappear in case of a power shortage.

OpenStack 0

OpenStack can’t attach cinder volume

Yesterday I was setting up a few things at my home OpenStack server and ran into an ugly problem that took me a while to resolve. I couldn’t attach any volume from the backends I had...

server OpenStack 0

What is OpenStack?

So, if you haven’t been sleeping under a huge rock in the last few years, you’ve probably heard of Virtualization and Cloud Computing. And chances are you’ve heard of OpenStack. A free and open source framework...

Ubuntu systemd 15.04 installation 0

Ubuntu 15.04 is switching to systemd

Ubuntu 15.04 will be the first release of the 2015 and it is scheduled to be released in April. One of the most bumping changes is the switch from Upstart to systemd (yes it is written...

security permissions 0

Special Permissions: Sticky Bit, SUID and SGID

Sticky Bit, SUID and SGID are special permissions used in Unix-like systems, hence in Linux. Knowing how to use and why one should use them isn’t necessarily fundamental to understand basic permissions in Linux, however they...

Fedora 21 Live boot on HP tm2-2101sl 0

How to run Fedora 21 on HP Touchsmart tm2-2101sl

I’ve always liked hybrid tablets, the ones with both a keyboard and a rotating screen. About three years ago I bought the one I’m still using today: a HP Touchsmart tm2-2101sl, excited of the new release...