text: 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: 
  
  (cid:2) Minimal operating system that is based on Red Hat ALT 7.6 Enterprise Linux. 
  (cid:2) Terraform for deploying OpenShift Infrastructure. 
  (cid:2) OpenShift-Ansible for installing and configure OpenShift. 
  
  **Note:**The deployment host can run on any architecture (for example, x86) that supports 
  the installation tools. 
  
  **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. 