adduser stack sudo visudo Find the part of the file that is labeled "User privilege specification" and change it to the following

User privilege specification root ALL=(ALL:ALL) ALL stack ALL=(ALL:ALL) ALL Close the file, exit and log in as "stack". Download devstack and create /opt/stack

cd /home/stack git clone https://github.com/openstack-dev/devstack -b stable/liberty sudo mkdir /opt/stack Create your local.conf file under /home/stack/devstack and give the following permissions.

cp /home/stack/devstack/samples/local.conf /home/stack/devstack

sudo chown -R stack:stack /home/stack/devstack sudo chown -R stack:stack /opt/stack sudo chmod 770 /home/stack/devstack sudo chmod 770 /opt/stack then run ./stack.sh