I am starting to transition from TF .11 to TF .12, recently I started to work on AWS terraform registry module and start to run into the following issue.
module "vpc" {
source = "terraform-aws-modules/vpc/aws"
version = "2.29.0"
# insert the 12 required variables here
name = "my-vpc"
cidr = "10.0.0.0/16"
azs = ["us-east-1a", "us-east-1b", "us-east-1c"]
private_subnets = ["10.0.1.0/24", "10.0.2.0/24", "10.0.3.0/24"]
public_subnets = ["10.0.101.0/24", "10.0.102.0/24", "10.0.103.0/24"]
enable_nat_gateway = true
enable_vpn_gateway = true
tags = {
Terraform = "true"
Environment = "dev"
}
}
(dev-tools) ➜ sandbox-vpc terraform plan
Error: Call to unknown function
on .terraform/modules/vpc/main.tf line 288, in resource "aws_subnet" "public":
288: availability_zone = length(regexall("^[a-z]{2}-", element(var.azs, count.index))) > 0 ? element(var.azs, count.index) : null
There is no function named "regexall".
Error: Call to unknown function
on .terraform/modules/vpc/main.tf line 289, in resource "aws_subnet" "public":
289: availability_zone_id = length(regexall("^[a-z]{2}-", element(var.azs, count.index))) == 0 ? element(var.azs, count.index) : null
There is no function named "regexall".
Error: Call to unknown function
on .terraform/modules/vpc/main.tf line 316, in resource "aws_subnet" "private":
316: availability_zone = length(regexall("^[a-z]{2}-", element(var.azs, count.index))) > 0 ? element(var.azs, count.index) : null
There is no function named "regexall".
Error: Call to unknown function
on .terraform/modules/vpc/main.tf line 317, in resource "aws_subnet" "private":
317: availability_zone_id = length(regexall("^[a-z]{2}-", element(var.azs, count.index))) == 0 ? element(var.azs, count.index) : null
There is no function named "regexall".
Error: Call to unknown function
on .terraform/modules/vpc/main.tf line 343, in resource "aws_subnet" "database":
343: availability_zone = length(regexall("^[a-z]{2}-", element(var.azs, count.index))) > 0 ? element(var.azs, count.index) : null
There is no function named "regexall".
Turns out this is an issue with TF version .12.06
(dev-tools) ➜ sandbox-vpc terraform --version
Terraform v0.12.6
+ provider.aws v2.55.0
Fix
Upgrade TF to .12.24
(dev-tools) ➜ sandbox-vpc brew upgrade terraform
Updating Homebrew...
==> Auto-updated Homebrew!
Updated Homebrew from 8d3aa49ae to c1708ff6b.
Updated 2 taps (homebrew/core and homebrew/cask).
==> Updated Formulae
openssl@1.1 ✔
==> Updated Casks
loginputmac openttd wacom-inkspace
==> Upgrading 1 outdated package:
terraform 0.12.6 -> 0.12.24
==> Upgrading terraform 0.12.6 -> 0.12.24
==> Downloading https://homebrew.bintray.com/bottles/terraform-0.12.24.mojave.bottle.tar.gz
==> Downloading from https://akamai.bintray.com/2a/2a21a77589673b2064c9fa7587a79a0375d69a8e02f824e5dc22dc960bf2d78b?__gda__=exp=1585
######################################################################## 100.0%
==> Pouring terraform-0.12.24.mojave.bottle.tar.gz
🍺 /usr/local/Cellar/terraform/0.12.24: 6 files, 51.2MB
==> `brew cleanup` has not been run in 30 days, running now...
/usr/local/share/ghostscript/9.19/Resource/CIDFSubst/ipaexg.ttf
(dev-tools) ➜ sandbox-vpc terraform --version
Terraform v0.12.24
+ provider.aws v2.55.0
(dev-tools) ➜ sandbox-vpc terraform plan
Refreshing Terraform state in-memory prior to plan...
The refreshed state will be used to calculate this plan, but will not be
persisted to local or remote state storage.
------------------------------------------------------------------------
An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
+ create
Terraform will perform the following actions:
# module.vpc.aws_eip.nat[0] will be created
+ resource "aws_eip" "nat" {
+ allocation_id = (known after apply)
+ association_id = (known after apply)
+ domain = (known after apply)
+ id = (known after apply)
+ instance = (known after apply)
+ network_interface = (known after apply)
+ private_dns = (known after apply)
+ private_ip = (known after apply)
+ public_dns = (known after apply)
+ public_ip = (known after apply)
+ public_ipv4_pool = (known after apply)
+ tags = {
+ "Environment" = "dev"
+ "Name" = "my-vpc-us-east-1a"
+ "Terraform" = "true"
}
+ vpc = true
}