CentOS 6 Python bootstrap, necessary for Packer and Vagrant if you wish to provision with Python-based provisioners such as Ansible

centos6-python-bootstrap.sh

#!/usr/bin/env bash


function bootstrap_python() {
  local PYTHON_PROFILE_PATH='/etc/profile.d/python2.7.sh';
  local CACHE_PYTHON_PROFILE=true;
  local CACHE_PYTHON_PROFILE_PATH='/vagrant/.vagrant/cache/python2.7.sh';
  # To save doing this on every provision, check if the file already exists.
  if [ -e "${PYTHON_PROFILE_PATH}" ] ; then
    echo "Profile found at ${PYTHON_PROFILE_PATH}, skipping setup";
    return 0;
  fi

  echo 'Upgrading packages...';
  yum upgrade -y;
  echo 'Installing development tools, OpenSSL, etc...'
  yum groupinstall -y 'Development tools' || return 1;
  yum install -y zlib-devel bzip2-devel openssl-devel xz-libs wget || return 1;
  echo 'Installing CentOS SCL...';
  yum install -y centos-release-scl;
  # While the libselinux-python isn't strictly necessary, the number of times I smack into this
  # building *anything* with Ansible means I include it here.
  echo 'Installing Python 2.7...';
  yum install -y python27 libselinux-python || return 1;
  echo 'Cleaning up...';
  yum clean all 2>&1 >/dev/null;
  echo "Adding Python 2.7 to global profile at ${PYTHON_PROFILE_PATH}";

  if [ "${CACHE_PYTHON_PROFILE}" = true ]; then
    if [ -e "${CACHE_PYTHON_PROFILE_PATH}" ]; then
      cp "${CACHE_PYTHON_PROFILE_PATH}" "${PYTHON_PROFILE_PATH}" || return 1;
      return 0;
    fi
  fi

  wget \
    -O "${PYTHON_PROFILE_PATH}" \
    --secure-protocol TLSv1 \
    'https://gist.githubusercontent.com/shrikeh/7773030d8b237ea3b7c5baab2652d927/raw/python2.7.sh' || return 1;

  if [ "${CACHE_PYTHON_PROFILE}" = true ]; then
    # Cache the python 2.7 path locally so we can reuse it - useful for
    # rebuilding Vagrant or multi-machine to avoid calling out each time.
    echo "Caching ${PYTHON_PROFILE_PATH} to ${CACHE_PYTHON_PROFILE_PATH}";
    mkdir -p "$(dirname ${CACHE_PYTHON_PROFILE_PATH})" 2>&1 >/dev/null ;
    cp "${PYTHON_PROFILE_PATH}" "${CACHE_PYTHON_PROFILE_PATH}"  2>&1 >/dev/null;
  fi
  return 0;
}

bootstrap_python;

python2.7.sh

#!/usr/bin/env bash
source /opt/rh/python27/enable;

Vagrantfile.example

  # Add this to your Provisioning somewhere.
  
  $bootstrap_script = 'https://gist.githubusercontent.com/shrikeh/7773030d8b237ea3b7c5baab2652d927/raw/centos6-python-bootstrap.sh'

  # CentOS 6.8 doesn't come with Python 2.7, so we need to tweak this
  config.vm.provision 'bootstrap',
    type: 'shell',
    path: $bootstrap_script