How to setup a CentOS 7 vagrant base box

vagrant-centos7-base.md

Mac OS X

• install virtualbox
• install vagrant
• download CentOS 7 minimal ISO
• create a new virtualbox instance "centos7base"
  • 512 mb ram
  • VDI, dynamically allocated, 8 gb
  • disable USB and audio controllers
  • insert the centos 7 iso into the virtual drive
• start "centos7base"
  • activate nic in network (turn on)
  • activate ntp in date/time (turn on switch, upper-right)
  • click begin installation
  • set root password vagrant
  • add user vagrant password vagrant
  • reboot after installation completes
• login as root
  • $ visudo
    • append line: vagrant ALL=(ALL) NOPASSWD: ALL
    • remove line: Defaults requiretty
  • exit
• login as vagrant
  • authorize vagrant insecure key pair for ssh

$ mkdir -m 700 .ssh
$ curl -o authorized_keys https://raw.githubusercontent.com/mitchellh/vagrant/master/keys/vagrant.pub
$ chmod 600 authorized_keys

• make sshd nicer when no internet
  • $ sudo vi /etc/ssh/sshd_config
  • insert line: UseDNS no
• install updates
  • $ sudo yum -y upgrade && sudo reboot
• install EPEL repository
  • $ sudo rpm -Uvh http://mirror.steadfast.net/epel/beta/7/x86_64/epel-release-7-0.2.noarch.rpm
• install virtualbox guest additions
  • insert the virtualbox linux additions cd

### in guest
$ sudo yum -y install kernel-devel dkms bzip2 && sudo reboot
$ sudo mkdir -m 000 /mnt/cdrom
$ sudo mount /dev/cdrom /mnt/cdrom
$ cd /mnt/cdrom
$ sudo sh VBoxLinuxAdditions.run
$ sudo shutdown -h now

• now package the box from the host

### on host
$ vagrant package --base centos7base
### if you want to test it locally
$ vagrant box add package.box --name centos7base

Why not a bash script that you can provision directly from the Vagrantfile?

For installing Virtual Box Guest additions you need compiler. In Centos 7 minimal i don't have any compiler installed so i just run
$sudo yum groupinstall 'Development Tools'