Category: virtualbox / Virtualization / xenserver

GNU Linux Debian 10 – how to install kvm virtualization (qemu)
05.12.2020

hostnamectl; # tested on Static hostname: hpServerG6 Operating System: Debian GNU/Linux 10 (buster) Kernel: Linux 4.19.0-12-amd64 Architecture: x86-64 su – root; apt update; apt install qemu-kvm libvirt-clients libvirt-daemon-system bridge-utils virtinst libvirt-daemon virt-manager usermod -a -G libvirt user; # give user […]

Windows (7) automatic reboot every 3 days at midnight taskschd.msc
04.09.2019

sometimes one wants to restart a windows vm every x days – to clean up RAM and Co. run task scheduler “Aufgabenplanung” %windir%\system32\taskschd.msc /s File/Datei -> New/Neu -> Basic Task/Einfache Aufgabe select or copy paste: %SystemRoot%\System32\shutdown.exe one has to scroll […]

Debian 9.8 “stretch” setup of VirtualBox 6.0 with Cinnamon Desktop
03.08.2019

# setup log of VirtualBox Graphical User Interface Version 6.0.10 r132072 (Qt5.7.1) # on Debian 9.8 with Cinnamon Desktop # go into software repo user@debian98:~$ cd /software/ # download latest version of software user@debian98:/software$ wget https://download.virtualbox.org/virtualbox/6.0.10/virtualbox-6.0_6.0.10-132072~Debian~stretch_amd64.deb –2019-08-03 14:36:05– https://download.virtualbox.org/virtualbox/6.0.10/virtualbox-6.0_6.0.10-132072~Debian~stretch_amd64.deb Resolving […]

CentOS7 setup virtualbox
07.02.2018

headless server: tested: 2018-10-17 on CentOS Linux 7.5 (Core) wget https://www.virtualbox.org/download/oracle_vbox.asc rpm –import oracle_vbox.asc cd /etc/yum.repos.d/ wget https://download.virtualbox.org/virtualbox/rpm/el/virtualbox.repo yum update yum search virtualbox yum install VirtualBox-5.2.x86_64 # if you want/need usb 3.0 extension package wget https://download.virtualbox.org/virtualbox/5.2.20/Oracle_VM_VirtualBox_Extension_Pack-5.2.20.vbox-extpack VBoxManage extpack install Oracle_VM_VirtualBox_Extension_Pack-5.2.20.vbox-extpack […]

Docker
29.01.2018

who is who? concepts: docker is written in Google Go by Docker Inc, SanFrancisco because it does not emulate any hardware – it is a linux container / sandbox or jail like Free BSD Jail or Solaris Zones or OpenVZ so […]

Linux CentOS7 install mate and virtualbox guest additions
17.12.2017

Update: as of 2019-01 and CentOS 7.6 the below setup may fail by now, for those reasons… BUT you CAN compile the latest kernel and all modules yourself (DON’T BE SHOCKED! YOU CAN DO IT! IT’S NOT ROCKET SIENCE!… just […]

VirtualBox under LinuxDebian – Hang Hung VM on Starting Virtual Machine
02.11.2017

this applies to: VirtualBox Version 5.1.8 r111374 (Qt5.3.2) hostnamectl Static hostname: DebianWorkstation Operating System: Debian GNU/Linux 8 (jessie) Kernel: Linux 3.16.0-4-686-pae Architecture: x86 the VMs hangs on startup with this screen: Solution: kill the vm then disable audio device… the […]

debian 9 stretch – howto setup docker container software
31.07.2017

What is docker? (src) Docker is the world’s leading software container platform. Developers use Docker to eliminate “works on my machine” problems when collaborating on code with co-workers. Operators use Docker to run and manage apps side-by-side in isolated containers […]

10.06.2017

this seems to be a result of updating VirtualBox without updating the extension… the version of extension and VirtualBox need to match oterhwise this error. VERR_PDM_DEVHLPR3_VERSION_MISMATCH 0x80004005 download the extension matching your version of virtualbox http://download.virtualbox.org/virtualbox/5.1.22/Oracle_VM_VirtualBox_Extension_Pack-5.1.22-115126.vbox-extpack uninstall any older version […]

13.05.2017

E_INVALIDARG 0x80070057 Cannot register the DVD image ‘/usr/share/virtualbox/VBoxGuestAdditions.iso’ {b058bc48-c451-4cff-9db0-d01c70e99c28} because a CD/DVD image ‘/usr/share/virtualbox/VBoxGuestAdditions.iso’ with UUID {bb9b13c5-f90f-4589-b212-8b9e01f118f5} already exists. Solution: open the .VBOX file with wordpad: […] <DVDImages> <Image uuid=”{b058bc48-c451-4cff-9db0-d01c70e99c28}” location=”/usr/share/virtualbox/VBoxGuestAdditions.iso”/> […] Delete all entries between <DVDImages> and </DVDImages> lines. After deleting […]

remote desktop GNU Linux – x11 forwarding GUI output – run process on server while graphical output is on client – ssh -X encrypted tunneling of graphical output of programs vnc – job control
08.05.2017

x11vnc is “the shit”: please checkout this article: ssh vnc port forwarding: https://dwaves.de/2018/02/20/centos7-vnc-server-remote-desktop-setup-howto-screen-sharing-in-2018-x11vnc-error-socket-address-family-not-supported-by-protocol-97/ checkout vnc section of: https://dwaves.de/2018/05/07/getting-started-with-raspberry-pi-2-model-b-v1-1-vs-odroid-xu4-vnc-display-0-and-1/ if you have ssh setup and running… (you might need to configure your router to let ssh through) you can neatly do […]

07.05.2017

“The heart of the problem is that Hyper-V locks exclusivly the virtualization feature(s) VT-x of the CPU(s), and will not share them with other software. VirtualBox can be configured to play nice (as much as technically possible) but also require […]

Was macht eigentlich ORACLE?
28.01.2017

Jeder kennt Steve Jobs (now dead) – aber wer kennt schon “Larry” Ellison? 😀 Oracle hat 2010 die Firma “Sun Microsystem aufgekauft” und damit OpenSource Technologie wie Java, VirtualBox und MySQL eingekauft. Lawrence Joseph “Larry” Ellison (born August 17, 1944) […]