Question

A developer clones an existing Terraform project and adds a new resource block for a provider that was not previously used in the configuration. When they run `terraform plan`, Terraform returns an error indicating the provider is not installed and suggests running a command first. Which command must be run to resolve this, and what does it do in this situation?

Accepted Answer

`terraform init`, which downloads the newly required provider plugin into the .terraform directory and records it in the lock file

Answer

`terraform apply -refresh-only`, which refreshes state and pulls any missing provider binaries as a side effect

Answer

`terraform validate`, which checks configuration syntax and automatically installs any providers it references

Answer

`terraform providers lock`, which is the only command capable of installing a provider before a plan can run