Invalid Count Argument

[NeroAngra]

Hi there! Very new to Terraform. Any advice is appreciated.

Error message:

Main.tf 1 - Account ID Hidden

Main.tf 2

VPC:

Subnets:

Provider.tf:

Thank you! Really enjoying working on this.

[petewilcock]

The VPC module is just included as an example for VPC creation if you don't have one already - if you do (and it looks like you do as you've inserted your values there), you can just remove the module_vpc block and it'll work as expected :)

[NeroAngra]

Thank you Pete, that did work. I don't think I setup the subnets correctly, though (I didn't put them in different availability zones, for example) so I ran into other issues.

I want to start from scratch, so I deleted the manually created VPC, deleted all cached Terraform files and re-ran Terraform with just the *_VPC module with the intent of letting Terraform create the VPC for me, but I get the same count argument errors that I noted above.

I do have a default VPC in the us-west-1 region, could that be causing a conflict?

[petewilcock]

No I think I've actually just written that VPC module quite poorly, The errors are because I'm creating a specific number of resources based on a value that Terraform can't work out in advance. It seems that older versions used to be a bit more tolerant of this but now it just throws a hard error.

It comes from the fact that easy region has a variable number of availability zones, at least two but sometimes five. What I tried to do there was query the number of zones and then create as many as needed, hence the count resource. Basically I just need to rewrite that with a better method.

TL;DR though, I'd just create your fresh VPC and availability zones manually and plug the values back in until I fix that up. You only really need one AZ for this but two is good practice if you ever plan to deploy anything else in future :)

[NeroAngra]

Okay, thank you for your input! I will get this closed out.