Fedora 23 Cloud Image Through Vagrant With VirtualBox and Libvirt Backend Provider

While testing LXD, I've to constantly switch between Ubuntu 15.10 and Fedora 23 to troubleshoot certain issues. However, my local Fedora 23 installation has been "contaminated" due to numerous tweaks I've done to get LXD to work. Hence, to make sure these changes I've made can be reproduced in fresh new Fedora environment, I've found using Vagrant with Fedora 23 Cloud image does fulfill that requirements.

Setting up in Ubuntu 15.10 was pretty much quite straight forward. First, we need to install Vagrant and VirtualBox. Check if we have the latest greatest version or for any issues.
$ sudo apt-get install vagrant virtualbox
$ vagrant version
Installed Version: 1.7.4
Latest Version: 1.7.4
You`re running an up-to-date version of Vagrant!

$ VBoxManage --version

Next, install libvirt provider and the necessary libraries. Skip this step if you want to use the default VirtualBox provider. as we're not using the VirtualBox provider.
$ sudo apt-get install libvirt libvirt-dev
$ vagrant plugin install vagrant-libvirt

Installing the 'vagrant-libvirt' plugin. This can take a few minutes...
Installed the plugin 'vagrant-libvirt (0.0.32)'!

Next, download the Base Cloud image for Vagrant. There are two versions, VirtualBox or libvirt/KVM image. Since we're running this in GNU/Linux, let's use the libvirt/KVM image.
$ aria2c -x 4 https://download.fedoraproject.org/pub/fedora/linux/releases/23/Cloud/x86_64/Images/Fedora-Cloud-Base-Vagrant-23-20151030.x86_64.vagrant-virtualbox.box

$ aria2c -x 4 https://download.fedoraproject.org/pub/fedora/linux/releases/23/Cloud/x86_64/Images/Fedora-Cloud-Base-Vagrant-23-20151030.x86_64.vagrant-libvirt.box

Once we've downloaded the image, import it to Vagrant.
$ vagrant box add fedora/23 Fedora-Cloud-Base-Vagrant-23-20151030.x86_64.vagrant-virtualbox.box

==> box: Box file was not detected as metadata. Adding it directly...
==> box: Adding box 'fedora/23' (v0) for provider: 
    box: Unpacking necessary files from: file:///home/ang/Projects/vagrant/Fedora-Cloud-Base-Vagrant-23-20151030.x86_64.vagrant-virtualbox.box
==> box: Successfully added box 'fedora/23' (v0) for 'virtualbox'!

Similarly for the libvirt image as well. We can add both images using the same name, in this case, 'fedora/23'.
$ vagrant box add fedora/23 Fedora-Cloud-Base-Vagrant-23-20151030.x86_64.vagrant-libvirt.box

==> box: Box file was not detected as metadata. Adding it directly...
==> box: Adding box 'fedora/23' (v0) for provider: 
    box: Unpacking necessary files from: file:///home/ang/vagrant/Fedora-Cloud-Base-Vagrant-23-20151030.x86_64.vagrant-libvirt.box
==> box: Successfully added box 'fedora/23' (v0) for 'libvirt'!

See the available images. Note that the Fedora 23 box shares the same name but under different providers.
$ vagrant box list
base      (virtualbox, 0)
fedora/23 (libvirt, 0)
fedora/23 (virtualbox, 0)

Let's create Fedora 23 Vagrant instance.
$ mkdir f23_cloud_virtualbox
$ cd f23_cloud_virtualbox
$ vagrant init fedora/23
A `Vagrantfile` has been placed in this directory. You are now
ready to `vagrant up` your first virtual environment! Please read
the comments in the Vagrantfile as well as documentation on
`vagrantup.com` for more information on using Vagrant.

Start and boot up your new Fedora 23 Cloud instance. If you don't specify the provider, by default it will use VirtualBox as its backend provider. Hence, the (--provider) parameter is optional.
$ vagrant up --provider=virtualbox
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Importing base box 'fedora/23'...

Let's try with libvirt provider and create all the necessary folder. At this moment, Vagrant only allows one provider for an active machine.
$ mkdir f23_cloud_libvirt
$ cd f23_cloud_libvirt
$ vagrant init fedora/23

Once done, let's boot this machine up. However, it seems we've a problem starting up the machine due to 'default' pool?
$ vagrant up --provider=libvirt
Bringing machine 'default' up with 'libvirt' provider...
There was error while creating libvirt storage pool: Call to virStoragePoolDefineXML failed: operation failed: pool 'default' already exists with uuid 9aab798b-f428-47dd-a6fb-181db2b20432

Google returned some answers suggesting checking the status of the pool. Let's try it out.
$ virsh pool-list --all
 Name                 State      Autostart 
 default              inactive   no 

Let's start the 'default' pool and also toggle it to auto start.
$ virsh pool-start default
Pool default started

$ virsh pool-autostart default
Pool default marked as autostarted

Check the status of the 'default' pool again.
$ virsh pool-list --all
 Name                 State      Autostart 
 default              active     yes     

Retry again to boot up our machine using libvirt backend provider.
$ vagrant up --provider=libvirt
Bringing machine 'default' up with 'libvirt' provider...
==> default: Creating image (snapshot of base box volume).
==> default: Creating domain with the following settings...

Lastly, SSH to our machine.
$ vagrant ssh
[vagrant@localhost ~]$ cat /etc/fedora-release 
Fedora release 23 (Twenty Three)

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