Monday, June 6, 2016

Check what kind of hypervisor is running in a VM


If you are unsure of what virtualization layer you are running, you can run 'virt-what' command

[root@sample-box]# virt-what
xen
xen-hvm

If you are running 'vmware', your output will be similar to what is shown in this link

Wednesday, June 1, 2016

Vagrant up error on virtuabox 5.0.16

After cloning a vagrant box, vagrant up resulted in the below error:-

Failed to mount folders in Linux guest. This is usually because
the "vboxsf" file system is not available. Please verify that
the guest additions are properly installed in the guest and
can work properly. The command attempted was:

mount -t vboxsf -o uid=`id -u vagrant`,gid=`getent group vagrant | cut -d: -f3`,dmode=777,fmode=777 vagrant /vagrant

mount -t vboxsf -o uid=`id -u vagrant`,gid=`id -g vagrant`,dmode=777,fmode=777 vagrant /vagrant

The error output from the last command was:

/sbin/mount.vboxsf: mounting failed with the error: No such device


Steps to resolve the issue was found in vagrant discussion board - https://github.com/mitchellh/vagrant/issues/3341

Resolution:-

1. On vagrant host - $vagrant plugin install vagrant-vbguest
2. $vagrant ssh
3. On guest box - $sudo ln -s /opt/VBoxGuestAdditions-5.0.16/lib/VBoxGuestAdditions /usr/lib/VBoxGuestAdditions
4. vagrant reload