#terragrunt - January 2020 | Slack Archive

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Terragrunt discussions
Archive: https://archive.sweetops.com/terragrunt/

Dec 2019

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Feb 2020

Milos Backonjaabout 6 years ago

guys how to safely migrate state from one s3 bucket to another with terragrunt ?

Brij Sabout 6 years ago

Ive got a terraform module that creates resources in two different aws accounts. I handle this by doing the following:

provider "aws" {
  region  = "us-west-2"
  profile = "profile1"
}

provider "aws" {
  region              = "us-west-2"
  profile             = "profile2"
  alias               = "digi"
}

And in the module itself, the different provider is picked up like this:

resource "aws_route53_record" "dig_ns" {
  provider = aws.digi

I'm trying to utilize terragrunt to deploy many modules. This becomes difficult since the above method no longer works, has anyone encountered this? If so, how have you got around this. I dont think Terragrunt supports multiple providers like this

Brij Sabout 6 years ago

I dont quite understand how tg can use different providers/regions(if at all ) 🤔

slaughtrabout 6 years ago

I don't see why that wouldn't work, unless maybe you're on an older version?

Brij Sabout 6 years ago

well, in the .hcl file you dont specify providers of any sort?

Brij Sabout 6 years ago

or any profiles

slaughtrabout 6 years ago

True, but terragrunt is just applying terraform. So you should be able to leave your tf files more or less the same

Brij Sabout 6 years ago

hmm, im confused

Brij Sabout 6 years ago

the terragrunt docs mention only leaving .hcl files in the 'live' repo

slaughtrabout 6 years ago

I have only done some light testing around multiple providers in my TF but TG didn't seem to mind

Brij Sabout 6 years ago

so if my tg file looked like this

include {
  path = find_in_parent_folders()
}

terraform {
  source = "git::git@github.com:foo/modules.git//app"
}

inputs = {
  zone_name       = "<http://domain.com|domain.com>"
  comment         = "Managed by Terraform"

Brij Sabout 6 years ago

where do you plugin multiple providers

slaughtrabout 6 years ago

You put the multiple providers in your .tf files like you would normally

slaughtrabout 6 years ago

Terragrunt is just a wrapper for terraform, it doesn't need all that info

slaughtrabout 6 years ago

So if you had module.tf with multiple providers before, just point TG at it and it should (probably) just work

getSurrealabout 6 years ago

replying in threads would be appreciated 😀

Brij Sabout 6 years ago

sorry about that 🙂

Milos Backonjaabout 6 years ago

Hi Guys, do you know if I can use terragrunt command in before hooks?

    before_hook "test" {
    commands     = ["init"]
    execute      = ["terragrunt", "apply", "-target=null_resource.rule", "-auto-approve"]
  }

joshmyersabout 6 years ago

Isn’t that going to cause recursion issues?

lorenabout 6 years ago

depends on when the state is locked... i think it would work. does seem fragile though. but could be an interesting approach to dealing with the "count" cannot be computed style of error

lorenabout 6 years ago(edited)

would at least need to disable autoinit in the hook to avoid recursion, --terragrunt-no-auto-init

Milos Backonjaabout 6 years ago

Thanks guys, eventually I dropped approach with null resource and use External Data Source

Chase Wardabout 6 years ago

@Chase Ward has joined the channel

Brij Sabout 6 years ago

I'm having an issue where terragrunt ignores a providers assume role/iam role block when assuming a role and using the creds from that as env vars - has anyone dealt with this?

joshmyersabout 6 years ago

@Brij S post what you have/what you problem is

joshmyersabout 6 years ago

Have had similar but need exact info.

Adrianabout 6 years ago

I have some extra var files defined and want to use some variables from this files in input for example region in container task definition, is this possible?

Davidabout 6 years ago

It is! What have you tried so far?

Adrianabout 6 years ago

I found this thread 🙂
https://github.com/gruntwork-io/terragrunt/issues/752

Adrianabout 6 years ago

this is what i need

# stage/frontend-app/terragrunt.hcl
terraform {
  source = "..."
}

# Include all settings from the root terragrunt.hcl file
include {
  path = "${find_in_parent_folders()}"
}

inputs = {
  aws_region = get_input("aws_region")
  remote_state_bucket = get_input("remote_state_bucket")

  instance_type = "t2.micro"
  instance_count = 10
}

Adrianabout 6 years ago

aws_region is defined in tfvars which is included in optional_var_files

Adrianabout 6 years ago

how can I achieve this?

Adrianabout 6 years ago

  aws_region = get_input("aws_region")

joshmyersabout 6 years ago

get_input isn’t a valid function.

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