WEBVTT

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-In this lecture,

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we will see how to use multiple providers
and resources in Terraform.

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Until now we have been making use
of a single provider called "local"

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to deploy a local file and the system.

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Terraform also supports the use
of multiple providers

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within the same configuration.

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To illustrate this,

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let's make use of another provider called
"random".

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This provider allows us to create
random resources such as a random ID

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or random integer or random password,
et cetera.

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Let us see how to use this provider
and create a resource called random_pet.

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This resource type will generate
a random pet name when applied.

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By making use of the documentation,

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we can add a resource block
to the existing main .tf file like this.

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Here,

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we are making use of the resource type
called random_pet.

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In an earlier lecture,

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we saw that the resource type
can be broken down to two parts.

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The keyword before the underscore
is the provider

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which in this case is random.

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The keyword following it
is the resource type which is the pet.

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Let's call this resource "my pet".

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Within this resource block,
we will use three arguments.

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One is the prefix
that is to be added to the pet name.

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The second argument is the separator
between the prefix

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and the pet name that is generated.

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The final argument is the length
which is the length of the pet name

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to be generated in words.

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A main .tf file now has resource definition
for two different providers,

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one resource of the local file type
that we have already created earlier

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and another resource of type random_pet.

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Before we generate an execution plan
and create these resources,

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we have to run
the Terraform init command again.

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Now, this is a mandatory step,

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as the plugin for the random provider
should be initializing

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the configuration directory
before we can make use of it.

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In the command output of the Terraform init,

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we can see that the local provider
was previously installed

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and it will be reused.

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The plug-in for the random provider,
on the other hand,

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will be installed as it was not used before.

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We can now run the Terraform plan
to review the execution plan.

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As expected,
the local file resource called "pet"

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will not be updated as it is unchanged
from the previous apply.

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A new resource by the name of "my pet"
will be created based

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on the new resource block that we just added.

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Now let's apply the configuration
using Terraform apply.

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As expected, the local file resource
is left as it is but now

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a new resource has been created
which is called "my pet".

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Random provider is a logical provider
and it displays the results

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of the pet name on the screen like this.

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Here, an attribute called ID
which contains the name of the pet

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is written by the apply command.

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Before we move on,
please know that in our illustration,

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the dog icon stands for a pet
and we'll be making use of it

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throughout this course.

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The random_pet can generate any pet name
and it does not have to be specifically a dog.

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Now, let's head over to the hands-on labs
and explore working

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with multiple providers in Terraform.