Hands on lab openstack OEL 7 example

First add openstack repo
Source document

systemctl stop firewalld 
systemctl disable firewalld
systemctl stop iptables
systemctl disable iptables

# Disable se linux
/etc/selinux/config
change to disabled

cd /etc/yum.repos.d
wget -N http://public-yum.oracle.com/public-yum-ol7.repo
[ol7_openstack20]
...
enabled=1

install git
Add proxy

# Examples below 
/etc/yum.conf
...
proxy=http://127.0.0.1:8888

/etc/profile
export http_proxy=http://127.0.0.1:8888
export https_proxy=http://127.0.0.1:8888
export NO_PROXY=10.10.10.10
# Note: Make sure to add the NO_PROXY otherwise it will hang

Note: for some of the git packages you might need to do if proxy is not working

git clone git://git.openstack.org/openstack/swift.git
packages include 
ceilometer
cinder
glance
heat
horizon
ironic
keystone
neutron
nova
requirements
swift
tempest

Devstack quick references
http://keithtenzer.com/2015/02/16/building-custom-dashboards-in-openstack-horizon/
To install
Quick start with RDO
https://www.rdoproject.org/install/quickstart/
Full install RHL or OEL 7
http://docs.openstack.org/liberty/install-guide-rdo/