Installation strategies

If you have specific customization requirements in networking, security, and other areas, see the following table for guidance. For more information, see Installing on AWS in the Red Hat OpenShift documentation.

Installation scenario	IPI	UPI	Notes
Fast cluster installation	✓		You can use Red Hat OpenShift on AWS. More information
Customized cluster	✓	✓	You can install with some of the customization options provided by the installer (such as `rosa-cli`). This scenario is suitable for both IPI and UPI. Use UPI if you need further customizations. More information
Cluster with network customizations	✓	✓	By using IPI, you have the flexibility to specify an existing IP range in the `install-config.yaml` file. More information
Cluster in an existing VPC		✓	You can provision the cluster in an existing VPC and network infrastructure. For better flexibility, use UPI. More information
Private cluster in an existing VPC		✓	If you have a security requirement to host the cluster on a private network, with no access to the internet, you might have to set up private hosted zones and configure route tables carefully. For this scenario, UPI provides better flexibility. More information
AWS infrastructure that you provision		✓	Use UPI to create the underlying infrastructure components and resources by using CloudFormation templates. More information
Using an internal mirror		✓	You can mirror the contents of your local registry and install from there. However, you still need internet access to access AWS APIs. More information

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Document Conventions

Installation options

Best practices