19th September, 2018
The virtual machine created in VirtualBox can use any configuration you would like, but Vagrant has some hard requirements:
-The first network interface (adapter 1) must be a NAT adapter. Vagrant uses this to connect the first time.
-The MAC address of the first network interface (the NAT adapter) should be noted, since you will need to put it in a Vagrantfile later as the value for
config.vm.base_mac. To get this value, use the VirtualBox GUI.
Other than the above, you are free to customize the base virtual machine as you see fit.
In addition to the software that should be installed based on the general guide to creating base boxes, VirtualBox base boxes require some additional software.
VirtualBox Guest Additions must be installed so that things such as shared folders can function. Installing guest additions also usually improves performance since the guest OS can make some optimizations by knowing it is running within VirtualBox.
Before installing the guest additions, you will need the linux kernel headers and the basic developer tools. On Ubuntu, you can easily install these like so:
$ sudo apt-get install linux-headers-$(uname -r) build-essential dkms
Next, make sure that the guest additions image is available by using the GUI and clicking on "Devices" followed by "Install Guest Additions". Then mount the CD-ROM to some location. On Ubuntu, this usually looks like this:
$ sudo mount /dev/cdrom /media/cdrom
Finally, run the shell script that matches your system to install the guest additions. For example, for Linux on x86, it is the following:
$ sudo sh /media/cdrom/VBoxLinuxAdditions.run
If the command succeeds, then the guest additions are now installed!
You can find the appropriate guest additions version to match your VirtualBox version by selecting the appropriate version here. The examples below use 4.3.8, which was the latest VirtualBox version at the time of writing.
wget http://download.virtualbox.org/virtualbox/4.3.8/VBoxGuestAdditions_4.3.8.iso sudo mkdir /media/VBoxGuestAdditions sudo mount -o loop,ro VBoxGuestAdditions_4.3.8.iso /media/VBoxGuestAdditions sudo sh /media/VBoxGuestAdditions/VBoxLinuxAdditions.run rm VBoxGuestAdditions_4.3.8.iso sudo umount /media/VBoxGuestAdditions sudo rmdir /media/VBoxGuestAdditions
If you did not install a Desktop environment when you installed the operating system, as recommended to reduce size, the install of the VirtualBox additions should warn you about the lack of OpenGL or Window System Drivers, but you can safely ignore this.
If the commands succeed, then the guest additions are now installed.
Vagrant includes a simple way to package VirtualBox base boxes. Once you've installed all the software you want to install, you can run this command:
$ vagrant package --base my-virtual-machine
Where "my-virtual-machine" is replaced by the name of the virtual machine in VirtualBox to package as a base box.
It will take a few minutes, but after it is complete, a file "package.box" should be in your working directory which is the new base box. At this point, you've successfully created a base box.
This section documents the actual raw contents of the box file. This is not as useful when creating a base box but can be useful in debugging issues if necessary.
A VirtualBox base box is an archive of the resulting files of exporting a VirtualBox virtual machine. Here is an example of what is contained in such a box:
$ tree . |-- Vagrantfile |-- box-disk1.vmdk |-- box.ovf |-- metadata.json 0 directories, 4 files
In addition to the files from exporting a VirtualBox VM, there is the "metadata.json" file used by Vagrant itself.
Also, there is a "Vagrantfile." This contains some configuration to properly set the MAC address of the NAT network device, since VirtualBox requires this to be correct in order to function properly. If you are not using
vagrant package --base above, you will have to set the
config.vm.base_mac setting in this Vagrantfile to the MAC address of the NAT device without colons.
When bringing up a VirtualBox backed machine, Vagrant imports the "box.ovf" file found in the box contents.
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