This assumes the following

1. You're on a Network that has access to the internet
2. The network you're on does NOT have DHCP
3. The helpernode will be your LB/DHCP/PXE/DNS and HTTPD server
4. You still have to do the OpenShift Install steps by hand (this just sets up the node to help you)
5. I used CentOS 7
6. You will be running the openshift-install command from this helpernode

Install a CentOS 7 or RHEl 7 server with this recommended setup:

• 4 vCPUs
• 4 GB of RAM
• 30GB HD
• Static IP

Then prepare for the install

yum -y install ansible git
git clone https://github.com/fctoibm/opc4-helper.git
cd ocp4-upi-helpernode

Inside that dir there is a vars.yaml file ... modify it to match your network (the example one assumes a /24)

Once you edited your vars.yaml file; run the playbook

ansible-playbook -e @vars.yaml tasks/main.yml

Once it's ran, check if the DNS is okay with the checker script

/usr/local/bin/checker.sh

Now you're ready to follow the OCP4 UPI install doc