Tag Archives: virtualbox

virtualbox minishift openshift origin dev env

if you have virtualbox (or hyper-v) you can download minishift and create a local openshift origin demo or dev environment

to avoid the Hyper-V error you will need to run minishift with the –vm-driver switch

C:\Progs\minishift-1.5.0-windows-amd64>minishift start
-- Installing default add-ons ... OK
-- Checking if Hyper-V driver is configured ... FAIL
 Hyper-V virtual switch is not set


C:\Progs\minishift-1.5.0-windows-amd64>minishift start --vm-driver virtualbox
-- Starting local OpenShift cluster using 'virtualbox' hypervisor ...
-- Minishift VM will be configured with ...
 Memory: 2 GB
 vCPUs : 2
 Disk size: 20 GB

once you have minishift openshift running locally you should be able to access its  webconsole at

and you may want to download the openshift command line tools so you can use those locally too

once you are happy minishift openshift is running locally you may like to create a project using the demo national parks container

  • openshiftroadshow/parksmap-katacoda:1.0.0

and the demo national parks python app

you should then see something like this



windows network almost complete thanks to xubuntu and virtualbox

windows network almost complete thanks to xubuntu and virtualbox

  • 1 hp windows 7 elitebook
  • 2 dell windows 7 notebooks
  • 2 dell windows 7 desktops
  • 1 dell xps server with (20G ram) running xubuntu 16 and virtualbox
    • 2 windows 2012 r2 eval server
    • 2 windows 2016 eval server

now just have 180 days left to renew mcse certification

windows network

oracle @virtualbox 5.0.20 now available for lin/mac/sol/win hosts

oracle @virtualbox 5.0.20 now available for download

but no mention that it fixes mac osx i5 crashing when > 3 vms use > 90% each

more oracle virtual box bugs here

virtualbox tips of the week check bios vt and dont overcommit ram

virtualbox tips of the week check bios vt and dont overcommit ram

  1. Check your BIOS and confirm VT and VT-x are enabled and then you will be able to build and run 64bit vms in your 64bit os
  2. Dont try and run 2 x 1.5G vms if you only have 4G of RAM unless you want to spend 4 hours shutting down – reduce vms to to 1G and restart them

do this

macbook osx virtualbox

not this

macbook osx virtualbox


watchout @virtualbox nat networking is not the same as @vmware

WATCHOUT Oracle VirtualBox nat networking is not the same as VMware nat networking

VirtualBox 5.x default “built in” “hardcoded” NAT networking gives every VM the same IP which will not let VMs talk to each other and VMs will also NOT work if you netadmin or sysadmin is using the 10.0.2.x subnet on your network


This separation maximizes security since by default virtual machines cannot talk to each other.

The documentation and network naming could be clearer BUT note in virtualbox if you want VMs to be able to talk to each other you must create your own “NAT Network” instead of using “NAT” network before creating VMs and assigning networks to them

ubuntu xubuntu 14.04.02 64-bit @oracle @virtualbox 5.0.8 64-bit on @intel T2390 only allows 32-bit vms ! why ?

ubuntu xubuntu 14.04.02 64bit @oracle @virtualbox 5.0.8 64bit on @intel T2390 only allows me to create 32bit vms ! why ?

$ uname -a 

Linux xubu14 3.16.0-51-generic #69~14.04.1-Ubuntu SMP Wed Oct 7 15:32:41 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

$ lsb_release -a 

No LSB modules are available.
Distributor ID:    Ubuntu
Description:    Ubuntu 14.04.3 LTS
Release:    14.04
Codename:    trusty

$ cat /proc/cpuinfo 

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Pentium(R) Dual CPU T2390 @ 1.86GHz
stepping : 13
microcode : 0xa3
cpu MHz : 800.000
cache size : 1024 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm dtherm
bogomips : 3724.23
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual