Marksei

Sysadmin, Data Science, Linux, Machine Learning and more

Tagged: Advanced

Nautilus inception 12

Linux / Tutorials

How to install ESXi nested inside ProxMox VE

So, one of the tasks I had to complete this past week was: Install an ESXi hypervisor in a virtual machine, on top of a Proxmox VE 4 infrastructure. This post documents the process (since I...

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Theory

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

Linux / OpenStack

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

Linux / Tutorials

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

Linux / Tutorials

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 1

Theory

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

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

Linux / OpenStack

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...