2024 Realistic TA-002-P Dumps Latest HashiCorp Practice Tests Dumps [Q31-Q45]

Explanation
Input variables are usually defined by stating a name, type and a default value. However, the type and default values are not strictly necessary. Terraform can deduct the type of the variable from the default or input value.
Variables can be predetermined in a file or included in the command-line options. As such, the simplest variable is just a name while the type and value are selected based on the input.
variable “variable_name” {}
terraform apply -var variable_name=”value”
The input variables, like the one above, use a couple of different types: strings, lists, maps, and boolean. Here are some examples of how each type are defined and used.
String
Strings mark a single value per structure and are commonly used to simplify and make complicated values more user-friendly. Below is an example of a string variable definition.
variable “template” {
type = string
default = “01000000-0000-4000-8000-000030080200”
}
A string variable can then be used in resource plans. Surrounded by double quotes, string variables are a simple substitution such as the example underneath.
storage = var.template
List
Another type of Terraform variables lists. They work much like a numbered catalogue of values. Each value can be called by their corresponding index in the list. Here is an example of a list variable definition.
variable “users” {
type = list
default = [“root”, “user1”, “user2”]
}
Lists can be used in the resource plans similarly to strings, but you’ll also need to denote the index of the value you are looking for.
username = var.users[0]
Map
Maps are a collection of string keys and string values. These can be useful for selecting values based on predefined parameters such as the server configuration by the monthly price.
variable “plans” {
type = map
default = {
“5USD” = “1xCPU-1GB”
“10USD” = “1xCPU-2GB”
“20USD” = “2xCPU-4GB”
}
}
You can access the right value by using the matching key. For example, the variable below would set the plan to “1xCPU-1GB”.
plan = var.plans[“5USD”]
The values matching to their keys can also be used to look up information in other maps. For example, underneath is a shortlist of plans and their corresponding storage sizes.
variable “storage_sizes” {
type = map
default = {
“1xCPU-1GB” = “25”
“1xCPU-2GB” = “50”
“2xCPU-4GB” = “80”
}
}
These can then be used to find the right storage size based on the monthly price as defined in the previous example.
size = lookup(var.storage_sizes, var.plans[“5USD”])
Boolean
The last of the available variable type is boolean. They give the option to employ simple true or false values.
For example, you might wish to have a variable that decides when to generate the root user password on a new deployment.
variable “set_password” {
default = false
}
The above example boolean can be used similarly to a string variable by simply marking down the correct variable.
create_password = var.set_password
By default, the value is set to false in this example. However, you can overwrite the variable at deployment by assigning a different value in a command-line variable.
terraform apply -var set_password=”true”

Explanation
The terraform refresh command is used to reconcile the state Terraform knows about (via its state file) with the real-world infrastructure. This can be used to detect any drift from the last-known state, and to update the state file.
This does not modify infrastructure, but does modify the state file. If the state is changed, this may cause changes to occur during the next plan or apply.

Explanation
The persistent data stored in the backend belongs to a workspace. Initially, the backend has only one workspace, called “default”, and thus there is only one Terraform state associated with that configuration.

Explanation
For small infrastructures, Terraform can query your providers and sync the latest attributes from all your
resources. This is the default behavior of Terraform: for every plan and apply, Terraform will sync all
resources in your state.
For larger infrastructures, querying every resource is too slow. Many cloud providers do not provide APIs to
query multiple resources at once, and the round trip time for each resource is hundreds of milliseconds. On top
of this, cloud providers almost always have API rate limiting so Terraform can only request a certain number
of resources in a period of time. Larger users of Terraform make heavy use of the -refresh=false flag as well as
the -target flag in order to work around this. In these scenarios, the cached state is treated as the record of
truth.
https://www.terraform.io/docs/state/purpose.html

Anyone can publish and share modules on the Terraform Registry.
https://www.terraform.io/docs/registry/modules/publish.html

Explanation
https://www.terraform.io/docs/provisioners/index.html

This will enable additional logging messages to find out from which paths Terraform is loading providers referenced in your Terraform configuration files, as it will set the log level to TRACE, which is the most verbose and detailed level.

This is the Terraform style convention for indenting a nesting level compared to the one above it. The other options are not consistent with the Terraform style guide.

Explanation
https://www.terraform.io/language/expressions/version-constraints#terraform-core-and-provider-versions

https://www.hashicorp.com/products/terraform/pricing/

This is the command that can add existing resources into Terraform state, by matching them with the corresponding configuration blocks in your files.