Lab Solution Version Compatibility

Terraform’s core is updated frequently, and new features or behaviors can introduce breaking changes. To keep your infrastructure code up to date—and avoid surprises in production—you can use Terraform Cloud’s speculative plan (plan-only run) to validate your configurations against a newer Terraform version without touching state or resources. In this lab, you’ll:

• Open the DevOps AWS MyApp Dev workspace
• Trigger a speculative plan using Terraform v1.3.0
• Confirm that your code remains compatible before upgrading

Terraform Cloud Run Types

1. Launch a Speculative Plan

1. In Terraform Cloud, navigate to the DevOps AWS MyApp Dev workspace.
2. Click Actions → Start new run.
3. Under Run type, select Plan (only).
4. From the Terraform version dropdown, choose v1.3.0 (or any newer version).

2. Execute the Speculative Plan

Click Start run. Terraform Cloud will now only run the plan phase using Terraform v1.3.0, leaving your existing resources untouched. You can monitor progress in the UI.

3. Review and Validate the Plan

Once the run finishes, review the output. A clean plan with zero changes confirms compatibility with Terraform v1.3.0.

4. Next Steps

• If the speculative plan reports no errors or unexpected diffs, update your workspace’s Terraform version to v1.3.0.
• Perform a full Plan & Apply run in Terraform Cloud to implement any pending changes under the new version.
• Regularly use speculative plans when adopting upcoming Terraform releases or major provider updates.

Links and References

• Terraform Cloud Runs
• Terraform Version Constraints
• Terraform Upgrade Guides