GCP Subnet output with secondary IP Ranges example

1subnets.tf

locals {
  subnets = {
    subnet1 = {
      name          = "subnet1"
      ip_cidr_range = "10.0.0.0/24"
      description   = "description for subnet1"
      region        = "region1"

      log_config = {
        aggregation_interval = "interval1"
        flow_sampling        = 0.5
        metadata             = "metadata1"
      }
      secondary_ip_range = [
        {
          range_name    = "secondary_range_1"
          ip_cidr_range = "10.0.1.0/24"
        },
        {
          range_name    = "secondary_range_2"
          ip_cidr_range = "10.0.2.0/24"
        }
      ]
    }
    subnet2 = {
      name          = "subnet2"
      ip_cidr_range = "10.0.3.0/24"
      description   = "description for subnet2"
      region        = "region1"

      log_config = {
        aggregation_interval = "interval2"
        flow_sampling        = 0.5
        metadata             = "metadata2"
      }
      secondary_ip_range = [
        {
          range_name    = "secondary_range_1"
          ip_cidr_range = "10.0.4.0/24"
        },
        {
          range_name    = "secondary_range_2"
          ip_cidr_range = "10.0.5.0/24"
        }
      ]
    }
    subnet3 = {
      name          = "subnet3"
      ip_cidr_range = "10.0.6.0/24"
      description   = "description for subnet3"
      region        = "region1"

      log_config = {
        aggregation_interval = "interval3"
        flow_sampling        = 0.5
        metadata             = "metadata3"
      }
      secondary_ip_range = [
        {
          range_name    = "secondary_range_1"
          ip_cidr_range = "10.0.7.0/24"
        },
        {
          range_name    = "secondary_range_2"
          ip_cidr_range = "10.0.8.0/24"
        }
      ]
    }
  }
}

2outputs.tf

output "subnets" {
  value = { for s in local.subnets : s.name => {
    "name"               = s.name,
    "ip_cidr_range"      = s.ip_cidr_range,
    "secondary_ip_range" = { for k in s.secondary_ip_range : k.range_name => {
      "name" = k.range_name,
      "ip_cidr_range" = k.ip_cidr_range
      } }
  } }
}

3output-results.tf

subnets = {
  "subnet1" = {
    "ip_cidr_range" = "10.0.0.0/24"
    "name" = "subnet1"
    "secondary_ip_range" = {
      "secondary_range_1" = {
        "ip_cidr_range" = "10.0.1.0/24"
        "name" = "secondary_range_1"
      }
      "secondary_range_2" = {
        "ip_cidr_range" = "10.0.2.0/24"
        "name" = "secondary_range_2"
      }
    }
  }
  "subnet2" = {
    "ip_cidr_range" = "10.0.3.0/24"
    "name" = "subnet2"
    "secondary_ip_range" = {
      "secondary_range_1" = {
        "ip_cidr_range" = "10.0.4.0/24"
        "name" = "secondary_range_1"
      }
      "secondary_range_2" = {
        "ip_cidr_range" = "10.0.5.0/24"
        "name" = "secondary_range_2"
      }
    }
  }
  "subnet3" = {
    "ip_cidr_range" = "10.0.6.0/24"
    "name" = "subnet3"
    "secondary_ip_range" = {
      "secondary_range_1" = {
        "ip_cidr_range" = "10.0.7.0/24"
        "name" = "secondary_range_1"
      }
      "secondary_range_2" = {
        "ip_cidr_range" = "10.0.8.0/24"
        "name" = "secondary_range_2"
      }
    }
  }
}