Issue with state locking AWS dynamodb

Gruntwork Customers
,
1

Hey all.

I’m trying to follow Yevgeniy’s book “up and running”
I’m hitting the following error, and I’m not sure what it means.

[terragrunt] 2017/11/13 14:57:13 At 4:3: root.terragrunt.lock: map must have string keys
[terragrunt] 2017/11/13 14:57:13 Unable to determine underlying exit code, so Terragrunt will exit with error code 1```

My terraform.tfvars file contains this

terragrunt = {
lock = {
backend = “dynamodb”

config {
state_file_id = "global/s3"
}

}
remote_state = {
backend = “s3”

config {
encrypt = "true"
bucket = "know_devops_tf_state_bucket"
key = "global/s3/terraform.tfstate"
region = "us-east-1"
}

}
}

Can anyone please advise what I’m missing.
I’m not seeing a clear example in the docs that explains exactly how to set up locking.
Many thanks

2

What version of Terragrunt are you using?

3

I’m using terragrunt version v0.13.19

4

OK, gotcha. I’m guessing you are following examples from the book, which came out when Terragrunt was still on v0.11.x or so. Quite a bit has changed since then! We described the changes in the Upgrading to Terragrunt 0.12.x migration guide.

That said, if you are just getting started, there’s no reason to do a “migration.” Instead, start from scratch by reading through the docs. In particular, you no longer need to specify the lock settings at all (Terraform now has locking built-in) and your remote state config should look like this (the lock config should be set to true with no quotes).

5

Hey, I’m using
terragrunt version v0.13.19

Thank you

6

Yes, I’m following the book example, and it gave me a warning that
.terragrunt was being depreciated. I headed over to the repo and that’s
what’s confused me I think. Because this is new to me, I’m not so sure of
what needs to go where.

Thanks for the links. I’ll see how far I get and get back to you.

7

Great, thank you, that’s working now.
I was completely confused before. :smiley:

Ian

8

I’m happy to hear that worked!

9

FYI, I’ve also updated my atom config with the following so it reads tfvars
files and highlights them accordingly.

customFileTypes:
‘source.hcl’: [
‘tfvars’
]

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