Basic Commands
Initialise configuration: (use folder as a location to store terraform configuration files )
terraform init
Format configuration files
terraform fmt
Validate configuration
terraform validate
Show possible changes before applying:
terraform plan
Apply changes:
terraform apply
Inspect state of configuration
terraform show
Terraform Configuration files
The main config files are the main.tf and variables.tf files
main.tf
The main.tf contains the main configuration about the build you are creating. The first bit of info in the file is the terraform provider. This is a block of code describing the service that terraform will be building on (AWS, Azure, vSphere etc). It will also contain the info to login to the service.
for the vsphere provider:
provider "vsphere" {
user = "${var.vsphere_user}"
password = "${var.vsphere_password}"
vsphere_server = "${var.vsphere_server}"
allow_unverified_ssl = true
}
variables.tf
This file will contain the variables for the main.tf file. This way it is easier to do different builds using the same main file.
example of the variable code block for the vsphere provider variables:
variable "vsphere_user" {
description = "Username for vSphere"
default = "<username>"
}
variable "vsphere_password" {
description = "Password for vSphere"
default = "<password>"
}
variable "vsphere_server" {
description = "vSphere server address"
default = "<FQDN of vCenter server>"
}