How to Let Linux Scripts Detect They’re Running in Virtual Machines

  Virtual machines try really hard to convince their operating systems that they’re running on physical hardware. So can you tell from the Linux command line if the computer is physical or virtual? Virtual Machines and Hypervisors A traditional computer is a physical object. It’s a collection of different pieces of hardware that are plugged and bolted together so that […]

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Windows 2016 Server convert Evaluation to Licensed version

Windows 2016 Server is available as 180-day trial for testing purposes and when the evaluation period expires, the machine stops working properly. Since the trial is an Evaluation edition, the installed version cannot be licensed as a paid edition but needs to be converted first. When you try to enter the product key, the following message is displayed:

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Configure Fail2Ban for Zimbra Server with route instead of iptables to block IPs

Overview Install and configure Fail2Ban to block attacking hosts using a null route or blackhole routes. PRO: – Works on all kernel versions and as no compatibility problems (back to debian lenny and WAY further). – It’s FAST for very large numbers of blocked ips. – It’s FAST because it Blocks traffic before it enters

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Migrating opensource Zimbra 8.6.0 on Centos 6.8 to Zimbra 8.7.1 on Centos 7 safely and with no downtime

A bit of history for the context After running a Zimbra mail server in a 500Gb Virtual Machine, for about 4 years, the server started feeling a bit crowded and with  #df -h reporting less than 50Gb of space left, it was time to move to a larger machine. The version I was (and still am) running

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How To Install MariaDB on Debian 10

Introduction MariaDB is an open-source database management system, commonly used as an alternative for the MySQL portion of the popular LAMP (Linux, Apache, MySQL, PHP/Python/Perl) stack. It is intended to be a drop-in replacement for MySQL and Debian now only ships with MariaDB packages. If you attempt to install MySQL server related packages, you’ll receive the compatible MariaDB

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Upgrade from 5.x to 6.0 Proxmox

Introduction Proxmox VE 6.x introduces several new major features. Carefully plan the upgrade, make and verify backups before beginning, and test extensively. Depending on the existing configuration, several manual steps—including some downtime—may be required. Note: A valid and tested backup is always needed before starting the upgrade process. Test the backup beforehand in a test lab setup. In

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How to Install Let’s Encrypt on Apache2

Improving your website security through encryption, even on the most basic servers, can increase your visitors’ trust in your site and your ability to run it. Setting up encryption on your web host has generally been complicated and expensive, which often deters administrators whose web applications might not depend on user input. Let’s Encrypt aims to change

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How to Setup OpenVZ 7 on CentOS 7

OpenVZ is a free open source software that provides container-based virtualization solution for Linux. OpenVZ 7 is the latest version of OpenVZ out there and it comes with Red Hat Enterprise Linux 3.10 kernel. This post is all about how to setup OpenVZ 7 on CentOS 7.x servers. One Kernel, Many VM’s OpenVZ creates multiple secure,

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Migration of servers to Proxmox VE

Introduction You can migrate existing servers to Proxmox VE. Moving Linux servers is always quite easy so you will not find much hints for troubleshooting here. Windows systems specific P2V issues inaccessible boot device Booting a virtual clone (IDE) of a physical Windows system partition may fail with a BSOD referring to the problem STOP:

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How to install OpenVPN inside a jail in FreeNAS 9.2.1.6+ with access to remote hosts via NAT

Requirements FreeNAS 9.10+ Domain updated by DDNS or a static IP Internet access Router forwarding of your port of choice (in my case 10011 UDP internal to 443 UDP external). SFTP Client (Winscp, Transmit or plain scp) Route all traffic? If you want to route all traffic through the VPN Tunnel, be sure to read

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How To Install Seedbox on Ubuntu Server

sudo apt-get update ———————————————————————– sudo apt-get install apache2 ———————————————————————– sudo adduser –disabled-password –system –home /var/lib/deluge –gecos “SamRo Deluge server” –group deluge ———————————————————————– sudo touch /var/log/deluged.log ———————————————————————– sudo touch /var/log/deluge-web.log ———————————————————————– sudo chown deluge:deluge /var/log/deluge* ———————————————————————– sudo apt-get update ———————————————————————– sudo apt-get install deluged ———————————————————————– sudo apt-get install deluge-webui ———————————————————————– sudo nano /etc/default/deluge-daemon ———————————————————————– # Configuration

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