Chapter 5. Red Hat OpenShift installation planning and considerations 91
In deployments with four or more PowerVM Compute nodes, OpenShift must be configured to 
create application nodes across to all physical servers. The application nodes are not 
configured to automatically restart in case of host failure. OpenShift is managing the 
applications availability.
Installation tools
Perform the installation by using the tools that are recommended and supported.
Deployment host
A deployment host is any virtual or physical host that supports Terraform and Ansible.
For this book, the deployment host is a virtual machine that provides a simple method for 
deploying OpenShift and includes the following features:
/SM590000Minimal operating system that is based on Red Hat ALT 7.6 Enterprise Linux.
/SM590000Terraform for deploying OpenShift Infrastructure.
/SM590000OpenShift-Ansible for installing and configure OpenShift.
Terraform
Terraform is an Infrastructure as Code tool for building, changing, and versioning 
infrastructure safely and efficiently.
Ansible, Chef, Puppet, and SaltStack focus on automating the installation and configuration of 
the software. Terraform automates provisioning of the infrastructure.
Note: The deployment host can run on any architecture (for example, x86) that supports 
the installation tools.