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1. KVM - Online Disk Resize

   This HOWTO assumes a KVM guest called 'vm' backed by an LVM volume called 'vm-data'.

   On Hypervisor

   # lvs
     vm-data      VG -wi-ao--  100.00g
   # lvresize -L 200G /dev/VG/vm-data
     Extending logical volume vm-data to 200.00 GiB
     Logical volume vm-data successfully resized
   # lvs
     vm-data      VG -wi-ao--  200.00g
   # virsh blockresize …

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2. Books

   Books I Read

   • RTL Cookbook - Don Lancaster - Feb 2017
   • A Marsi (HU) - Andy Weir - Nov 2016
   • Pomsta oceána (SK) - Frank Schätzing - Jan 2016
   • Postfix: The Definitive Guide - Kyle D. Dent - Mar 2015
   • Whole: Rethinking the Science of Nutrition - Campbell, Colin T. - Mar 2015
   • The Diary of a Young Girl - Anne …

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3. Site-to-Site VPN with TINC

   Almost all VPN tutorials on Internet cover the simplest possible case of interconnecting two remote LANs. This is not really helpfull, because the real world requirements are more complex than that. Usually there are multiple networks in each location (DMZ, LAN, MGMT, OPS, etc...) and more than just two locations …

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4. How to Generate a Self Signed Certificate

   This is how to generate a strong self signed certificate using one command

   openssl req -x509 -nodes -sha256 -newkey rsa:2048 \
           -days 365 \
           -keyout server.key -out server.pem
   

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5. KVM - Guest Creation and Automated Installation

   I wrote a script for creating CentOS, Fedora, Ubuntu, and Debian KVM guests. The guest OSes are installed automatically using kickstart or preseed.

   • UPDATE - 2013-05-06 - Added Ubuntu 12.04
   • UPDATE - 2013-08-08 - Added Debian 7.1
   • UPDATE - 2013-08-16 - Added Fedora 19, removed Fedora 18

   Copy the create-vm.sh scrip to hypervisor …

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