diskimage-builder/diskimage_builder/elements/yum-minimal/install.d/10-base-networking

#!/bin/bash
#
# Copyright 2015 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#

if [ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]; then
    set -x
fi
set -eu
set -o pipefail

# allow networking init scripts inside the container to work without extra steps
cat << EOF | sudo tee /etc/sysconfig/network > /dev/null
NETWORKING=yes
NETWORKING_IPV6=yes
NOZEROCONF=yes
EOF

# If you want eth0 and eth1 created as DHCP based interfaces, enable
# this.  You don't want this if systemd is going to call the
# interfaces on the real system something else, or if you're using a
# network-manager like cloud-init, glean or network-manager that will
# handle the interfaces dynamically.
if [[ "${DIB_YUM_MINIMAL_CREATE_INTERFACES:-0}" -eq "1" ]]; then
    for interface in eth0 eth1; do
        cat << EOF | tee /etc/sysconfig/network-scripts/ifcfg-$interface > /dev/null
DEVICE=$interface
BOOTPROTO=dhcp
ONBOOT=on
EOF
    done
fi