This is a short tutorial on how to create a Vagrant box from existing Virtual Machine. Vagrant tool gives you the best environment to manage and control your Virtual Machines. This works on any Linux Distribution.
Installing Vagrant box from scratch may not be an efficient way if you already have a running Virtualbox Vm from same Base os as the vagrant box. Additionally, you’ll save bandwidth if you have updated pre-existing Vm and maybe installed additional packages that you’ll like to have on new Vagrant controlled Virtual Machine.
Step 1: Create Vagrant box directory
Create a directory for vagrant box to be created.
mkdir -p ~/vagrant cd ~/vagrant mkdir centos7
Step 2: Create vagrant user on existing VM
You current VM which you need to convert to Vagrant box need to have vagrant user created. If missing, create a username called “vagrant” with password “vagrant“. If not you can add it
$ nano adduser.sh
Paste the code below and save the file.
# Vagrant specific date > /etc/vagrant_box_build_time # Add vagrant user /usr/sbin/groupadd vagrant /usr/sbin/useradd vagrant -g vagrant -G wheel echo "vagrant"|passwd --stdin vagrant echo "vagrant ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers.d/vagrant chmod 0440 /etc/sudoers.d/vagrant # Installing vagrant keys mkdir -pm 700 /home/vagrant/.ssh wget --no-check-certificate 'https://raw.github.com/mitchellh/vagrant/master/keys/vagrant.pub' -O /home/vagrant/.ssh/authorized_keys chmod 0600 /home/vagrant/.ssh/authorized_keys chown -R vagrant /home/vagrant/.ssh # Customize the message of the day echo 'Welcome to your Vagrant-built virtual machine.' > /etc/motd
Make the script executable and run it.
chmod +x adduser.sh ./adduser.sh
Step 3: Create Base vagrant box
Change to directory containing CentOS vagrant box you downloaded.
Create a file called Vagrantfile and paste below data.
Vagrant.configure("2") do |config| config.vm.box = "centos/7" end
Bring the added vm up
If successful in spinning up, you should be logged in by default. If you get error message “default: Warning: Connection timeout. Retrying…”, try press CTL+C and use vagrant ssh to login.
Step 4: Copy VM Virtual Disk
Change directory to VirtualBox VMs directory and find the name of Virtualbox VM that we want to make newly added box use.
cd ~/VirtualBox VMs/ ls
Mine is under centos-asterisk folder. With the name of vmdk as centos-asterisk-disk1.vmdk. We need to copy this file to the directory containing vagrant VM we added “centos7“.
Now rename your added VM on Virtualbox Gui. Before you can rename you have to turn it off.
cd ~/vagrant/centos7 vagrant halt
To rename go to Virtual Machine > General > Basic > Name
Next thing to do is copy centos-asterisk-disk1.vmdk to box-disk1.vmdk. Make sure the Virtual Machine is off, if not turn it off.
cp ~/VirtualBox VMs/centos-asterisk/centos-asterisk-disk1.vmdk ~/VirtualBox VMs/centos7/box-disk1.vmdk
Now start vagrant box
cd ~/vagrant/centos7 vagrant up vagrant ssh
Step 4: Install VirtualBox Guest Additions
Install Virtualbox Guest Additions on the guest OS.
From Host computer, copy to VBoxGuestAdditions.iso ~/vagrant/centos7. Then on Guest OS run
mount -o loop /vagrant/VBoxGuestAdditions.iso /mnt sh /mnt/VBoxLinuxAdditions.run umount /mnt
Enjoy your Vagrant environment.