hashicorp-terraform/Lobby

https://www.terraform.io/

Alfredo Cambera

@alfredocambera

Is it possible to create various resources using a for/for_each loop? I'd like to create a module that would receive a list of parameters to create DNS records

Andrew Bobulsky

@RulerOf

You can create many of the same resource with for_each, but not different resources. I'm about 99% sure the same is true of for

...I still haven't quite figured out the purpose of for.

Alfredo Cambera

@alfredocambera

I was looking to do something like this:

for_each = [ for host in hosts: {
resource "aws_route53_record" "${host}" {
  zone_id = "${aws_route53_zone.private.zone_id}"
      name    = "${var.s.name}"
      type    = "A"
      ttl     = "30"

      records = [
        "${var.s.ip}"
      ]
    }
}
  ]

cloudsoldier

@cloudsoldier

Dear people ...my job is in danger and need help...has anyone encrypted azurevm disks using terraform ? please please help

any code example will be helpful

Andrew Bobulsky

@RulerOf

@alfredocambera you cannot interpolate resource names.

That said, there's a way to do what you're asking. It just looks a little different

one moment.

Alfredo Cambera

@alfredocambera

great, thanks @RulerOf

cloudsoldier

@cloudsoldier

all gone quite....

sorry guys

Alfredo Cambera

@alfredocambera

@cloudsoldier did you manage to find the solution?

cloudsoldier

@cloudsoldier

@alfredocambera ..no sir struggling for last two weeks and no one knows

Alfredo Cambera

@alfredocambera

Sorry, I have no experience with terraform and azure.

Andrew Bobulsky

@RulerOf

Same problem here @cloudsoldier , I don't know much of anything about Azure, including how its disk encryption scheme works.

cloudsoldier

@cloudsoldier

so this forum is for Terraform or something ele

else

where shall I ask for help

Andrew Bobulsky

@RulerOf

It's for terraform, but your question is more specific to Azure than it is to terraform.

Alfredo Cambera

@alfredocambera

@cloudsoldier why don't you ask on the terraform channel on IRC? Just a guess

Create a question on stackoverflow

Andrew Bobulsky

@RulerOf

I think you already know the resource you need to configure—something to do with azurevm_extension and a bit of embedded JSON.

cloudsoldier

@cloudsoldier

no sir....I used Terraform to create azure vm ...only I need assistance to encrypt

Alfredo Cambera

@alfredocambera

Create a question on quora or reddit

cloudsoldier

@cloudsoldier

terraform channel /Irc what are they

quora /reddit no idea sie

sir

Alfredo Cambera

@alfredocambera

Quora, Reddit a couple of websites? Google it and they will show first on search results

https://webchat.freenode.net/ this is a web interface for IRC. Look for the #terraform channel there

cloudsoldier

@cloudsoldier

thanks guys

Alfredo Cambera

@alfredocambera

@cloudsoldier https://github.com/Azure/terraform-azurerm-encryptedmanageddisk

Andrew Bobulsky

@RulerOf

@alfredocambera is var.hosts a list of maps?

Alfredo Cambera

@alfredocambera

@RulerOf yeap

Andrew Bobulsky

@RulerOf

So something like this:

variable "hosts" {
  default = [
    {
      name = "host1"
      ip   = "1.1.1.1"
    },
    {
      name = "host2"
      ip   = "2.2.2.2"
    }
  ]
}

Alfredo Cambera

@alfredocambera

  hosts = [
    {
      ip   = "127.0.0.1"
      name = "first"
    },
    {
      ip   = "127.0.0.2"
      name = "second"
    },
    {
      ip   = "127.0.0.3"
      name = "third"
    },
  ]

Andrew Bobulsky

@RulerOf

Close enough :D

Alfredo Cambera

@alfredocambera

yeap

Andrew Bobulsky

@RulerOf

Something like this ought to do it:

resource "aws_route53_record" "host" {
  for_each = var.hosts

  zone_id = aws_route53_zone.private.zone_id
  name    = each.name
  type    = "A"
  ttl     = 30

  records = [
    each.ip
  ]
}

Alfredo Cambera

@alfredocambera

nice!, thanks a lot for taking the time to create an example @RulerOf

Andrew Bobulsky

@RulerOf

Sure thing! :)

metsuke0

@metsuke0

Does there still exist the behavior that if I use "count" to create 100 instances, and I destroy the first [0] instance, then terraform will shift the array and recreate however many shifted on next apply?

Andrew Bobulsky

@RulerOf

That's what for_each was specifically developed to resolve

metsuke0

@metsuke0

I'm curious as to why that behavior isn't built in then? Is the behavior I mentioned desired by default?

but I shall redo my instance creation with for_each then

Andrew Bobulsky

@RulerOf

The array shifting is just a side effect of the way the count concept works.

It's not really desired or undesired. It just... is.

ketzacoatl

@ketzacoatl

@metsuke0 it is now "built in" in that sense, wasn't possible in HCL before

Kevin Crook

@MidnightCellist_twitter

Is there a recommended size limit on terraform stacks?

Andrew Bobulsky

@RulerOf

Never heard of such a recommendation, but that doesn't mean it doesnt exist.

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