Datacenters

data "akamai_gtm_datacenters" "my_datacenters" {
      domain = "example.domain.net"
}

output "my_datacenters" {
  value = data.akamai_gtm_datacenters.my_datacenters
}

Changes to Outputs:
+ my_datacenters = {
    + datacenters = [
        + {
            + city                              = "Bath"
            + clone_of                          = 0
            + cloud_server_host_header_override = false
            + cloud_server_targeting            = false
            + continent                         = "EU"
            + country                           = "GB"
            + datacenter_id                     = 1234
            + default_load_object               = []
            + latitude                          = 51.380001
            + links                             = [
                + {
                    + href = "https://akab-h05tnam3wl42son7nktnlnnx-kbob3i3v.luna.akamaiapis.net/config-gtm/v1/domains/example.akadns.net/datacenters/1234"
                    + rel  = "self"
                  },
              ]
            + longitude                         = -2.360000
            + nickname                          = "example_1"
            + score_penalty                     = 0
            + servermonitor_pool                = ""
            + state_or_province                 = ""
            + virtual                           = true
          },
          {
            + city                              = "Boston"
            + clone_of                          = 0
            + cloud_server_host_header_override = false
            + cloud_server_targeting            = false
            + continent                         = "NA"
            + country                           = "US"
            + datacenter_id                     = 4321
            + default_load_object               = []
            + latitude                          = 42.3601
            + links                             = [
                + {
                    + href = "https://akab-h05tnam3wl42son7nktnlnnx-kbob3i3v.luna.akamaiapis.net/config-gtm/v1/domains/example.akadns.net/datacenters/4321"
                    + rel  = "self"
                  },
              ]
            + longitude                         = 71.0589
            + nickname                          = "example_2"
            + score_penalty                     = 0
            + servermonitor_pool                = ""
            + state_or_province                 = ""
            + virtual                           = true
          },
      ]
    + domain      = "example.alb.akadns.net"
    + id          = "example.alb.akadns.net"
  } 

// choose which data center from your returned list for the values
variable "datacenter_id" {
    type: string
    description: "My US data center ID"
    default = "4321"
}
variable "nickname" {
    type: string
    description: "My US data center nickname"
    default = "example_2"
}

// local
datacenter_id = data.akamai_gtm_datacenters.my_datacenters.datacenters[1].datacenter_id
nickname = data.akamai_gtm_datacenters.my_datacenters.datacenters[1].nickname

// tvars
datacenter_id = var.datacenter_id
nickname = var.nickname