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Failings

When Terraform isn't great

  • Objects that take a long time to create are suitable candidates. Active Directory integrations, Elastic search clusters, Kubernetes clusters can all take > 15 to 30 minutes to create.

  • Objects that are fragile. Some AWS resources are built with Cloudformation behind the scenes, any changes, even minor can take forever.

  • Objects with significant cascading effects. Creating and modifying Active Directory

  • Naming [aws fault] or recreating objects that have just been destroyed

  • API Gateway has its' own concept of environments/layers and can create a complex structure in Terraform that varies according to the code where no obvious model to make a module exists.