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example of element() and lookup()
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| $ terraform plan | grep -v computed | |
| Terraform will perform the following actions: | |
| + aws_instance.example[0] | |
| ami: "ami-2801e54b" | |
| availability_zone: "us-west-1b" | |
| get_password_data: "false" | |
| instance_type: "t2-micro" | |
| source_dest_check: "true" | |
| tags.%: "1" | |
| tags.Name: "example-vm0" | |
| + aws_instance.example[1] | |
| ami: "ami-2801e54b" | |
| availability_zone: "us-west-1c" | |
| get_password_data: "false" | |
| instance_type: "t2-micro" | |
| source_dest_check: "true" | |
| tags.%: "1" | |
| tags.Name: "example-vm1" | |
| + aws_instance.example[2] | |
| ami: "ami-2801e54b" | |
| availability_zone: "us-west-1b" | |
| get_password_data: "false" | |
| instance_type: "t2-micro" | |
| source_dest_check: "true" | |
| tags.%: "1" | |
| tags.Name: "example-vm2" | |
| + aws_instance.example[3] | |
| ami: "ami-2801e54b" | |
| availability_zone: "us-west-1c" | |
| get_password_data: "false" | |
| instance_type: "t2-micro" | |
| source_dest_check: "true" | |
| tags.%: "1" | |
| tags.Name: "example-vm3" | |
| + aws_instance.example[4] | |
| ami: "ami-2801e54b" | |
| availability_zone: "us-west-1b" | |
| get_password_data: "false" | |
| instance_type: "t2-micro" | |
| source_dest_check: "true" | |
| tags.%: "1" | |
| tags.Name: "example-vm4" | |
| + aws_instance.example[5] | |
| ami: "ami-2801e54b" | |
| availability_zone: "us-west-1c" | |
| get_password_data: "false" | |
| instance_type: "t2-micro" | |
| source_dest_check: "true" | |
| tags.%: "1" | |
| tags.Name: "example-vm5" | |
| + aws_instance.example[6] | |
| ami: "ami-2801e54b" | |
| availability_zone: "us-west-1b" | |
| get_password_data: "false" | |
| instance_type: "t2-micro" | |
| source_dest_check: "true" | |
| tags.%: "1" | |
| tags.Name: "example-vm6" | |
| + aws_instance.example[7] | |
| ami: "ami-2801e54b" | |
| availability_zone: "us-west-1c" | |
| get_password_data: "false" | |
| instance_type: "t2-micro" | |
| source_dest_check: "true" | |
| tags.%: "1" | |
| tags.Name: "example-vm7" | |
| Plan: 8 to add, 0 to change, 0 to destroy. |
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| variable "names" { | |
| type = "map" | |
| default = { | |
| "0" = "vm0" | |
| "1" = "vm1" | |
| "2" = "vm2" | |
| "3" = "vm3" | |
| "4" = "vm4" | |
| "5" = "vm5" | |
| "6" = "vm6" | |
| "7" = "vm7" | |
| } | |
| } | |
| variable "az_map" { | |
| type = "map" | |
| default = { | |
| "0" = "us-west-1b" | |
| "1" = "us-west-1c" | |
| } | |
| } | |
| resource "aws_instance" "example" { | |
| count = "${length(var.names)}" | |
| ami = "ami-2801e54b" | |
| instance_type = "t2-micro" | |
| availability_zone = "${element(values(var.az_map), count.index)}" | |
| tags { | |
| Name = "example-${lookup(var.names, count.index)}" | |
| } | |
| } |
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