Question

A platform team maintains two modules: a 'network' module that provisions a VPC and subnets, and an 'app' module that deploys instances into an existing subnet. In the root configuration, both modules are called. The 'app' module has an input variable named 'subnet_id'. The 'network' module already declares an output named 'private_subnet_id'. How should the root module wire the network's subnet into the app module?

Accepted Answer

Set subnet_id = module.network.private_subnet_id in the app module block

Answer

Set subnet_id = network.private_subnet_id in the app module block

Answer

Reference var.private_subnet_id inside the app module's resource directly

Answer

Add an output 'subnet_id' to the app module so it can read the network output