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- In this lesson, we're gonna learn about

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the HashiCorp configuration
language, commonly known as HCL.

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This is the,

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the configuration language
that we use to tell Terraform

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the state that we want our
cloud provider to be in,

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so we're gonna list all the
resources that are required

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for our solution,

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using HCL.

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So let's just start out talking
about the project layout

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for a Terraform project.

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You can see here, if
you look at my screen,

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we've got,

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we've got three files

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in a folder.

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Okay, so Terraform is

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specified by its context, so a folder

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with

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HCL files or .tf files constitutes
what's called a module.

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Now in this case, it's the root module,

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and we'll get into some modules in

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a later lesson.

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But for right now, you need to know

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that everything in this directory

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is considered to be part of
the Terraform configuration.

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It doesn't matter which of these files

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the resources or other
objects are listed in.

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By convention,

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there's always a file called main.tf,

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outputs.tf, and variables.tf.

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Main is typically where all
the resources are declared.

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Outputs is where the outputs are declared,

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and variables are where
the variables are declared,

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and we'll talk about what
outputs and variables are,

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we haven't gone over that yet.

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But we'll talk about that soon.

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Sometimes, if main becomes very large,

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there will be additional TF files in here,

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but that's usually a good
time to start using modules.

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And again, we'll talk about
those in a later lesson.

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But for now, just realize that

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the contents of the directory

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define the extent of the
Terraform configuration.

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And that is not recursive, so it's

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everything in the top level here.

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You can do a normal

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Terraforming knit.

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And...

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Okay, now this has read

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the configuration in
all three of these files

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in order to do

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its plan and,

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and a knit.

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It doesn't matter which of these files

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you list your resource in.

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It doesn't matter what order
your resources are listed in.

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So we'll talk about that as
we get further into this.