terraform aws random subnets

[SreeN]

Hi All,

I have to create 3 subnets and 9 instances, 3 instance/ subnets. I tried many methods and none is working. iIt will work if  i keep number of instance same as subnets count . Tried all these methods. Can someone please help?.

subnet_ids = [ aws_subnet.CLUSTER-SubnetA.id, aws_subnet.CLUSTER-SubnetB.id, aws_subnet.CLUSTER-SubnetC.id ]

  #subnet_id		= "${var.subnets[count.index]}"
  #subnet_id     = "${tolist(data.aws_subnet_ids.example.ids)[count.index]}"

#subnet_id     = "${data.aws_subnet_ids.selected.ids[count.index]}"

#subnet_id = "${element(data.aws_subnet_ids.selected.ids, count.index)}"

Thanks

Sre

[Rob Coward]

Have you tried:

 

Subnet_id = “${element(subnet_ids, count.index)}”

 

You haven’t shared your data.aws_subnet_ids.selected resource definition, but since you are specifying your own list of subnets, the above will rotate through your list of subnets for however many counts you define.

 

Rob

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[SreeN]

Hi Rob,

Thanks for the update

I tried this as well, but the problem is that I cannot define the subnet_ids as shown in the first post , since variable do not support another list of variables. what ever I try I  am getting either invalid index or some other error. Could you please share full sample syntax ?

Thanks

Sre

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