CODEWITHSUNDEEP
terraform
bhamichi
bhamichi

Reputation: 441

Terraform: Missing required argument

Someone can help to clarify how local and global variables working in Terraform ? I'm facing now this issue :

PS E:\GitRepo\Terraform\prod> terraform plan ╷ │ Error: Missing required argument │ │ on main.tf line 46, in module "pub-rt": │ 46: module "pub-rt" { │ │ The argument "vpc_cidr_block" is required, but no definition was found. ╵ ╷ │ Error: Missing required argument │ │ on main.tf line 46, in module "pub-rt": │ 46: module "pub-rt" { │ │ The argument "nat_id" is required, but no definition was found.

My code structure is :

-- Dev
  -- main.tf
-- modules
  -- rt
    -- pub-rt.tf
    -- pri-rt.tf
    -- vars.tf

This is my main.tf

# Create Public Route Table
module "pub-rt" {
  source            = "../modules/rt"
  pub_rt_tag        = { Name = "prod-pub-rt" }
  vpc_id            = module.vpc.vpcId 
  ir_cidr           = var.ir_cidr                                 # routing inside the VPC
  gateway_id        = module.igw.igwId                            # routing to the internet through igw
}


# Create Private Route Table
module "pri-rt" {
  source            = "../modules/rt"
  pub_rt_tag        = { Name = "prod-pri-rt" }
  vpc_id            = module.vpc.vpcId 
  vpc_cidr_block    = var.vpc_cidr                                # routing inside the VPC
  nat_id            = module.nat.natId                            # routing to the internet NAT
}

My ../rt/vars.tf contains :

variable "vpc_cidr_block" { }  //this variable point to "pri-rt.tf"
variable "vpc_id" { }          //this variable common and point to "pub-rt.tf" and "pri-rt.tf"
variable "gateway_id" { }      //this variable point to "pub-rt.tf"
variable "nat_id" { }          //this variable point to "pri-rt.tf"
variable "ir_cidr" { }         //this variable point to "pub-rt.tf"

Upvotes: 3

Views: 14956

Answers (1)

Marcin
Marcin

Reputation: 238081

Variables have module scope, so there is no global variables that propagate over all sub-modules. Your vars.tf should be in ./Dev. You need also corresponding vars.tf with variables specific to your module.

Upvotes: 2

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