# FAQ
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## What happens if cluster provisioning fails?
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The installer provides logs that can provide guidance for fixing the error.

## Can I use IPI and UPI interchangeably?
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You should use one of these methods depending on your use case. For a comparison, see the section [Advantages and disadvantages of each approach](installation-options.md#adv-disadv). IPI is the easier method for most standard scenarios.

## Where can I get CloudFormation templates for provisioning the underlying infrastructure on AWS, if I decide to go with UPI?
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For details and example templates, see the [OpenShift documentation](https://docs.redhat.com/en/documentation/openshift_container_platform/4.7/html-single/installing/index#installing-aws-user-infra). You can use these templates as a base and modify them to meet your requirements.