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Allow specifying regional L7 ILB in dns_record_set routing policy #14710

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May 24, 2023
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Allow specifying regional L7 ILB in dns_record_set routing policy #14710

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4 changes: 4 additions & 0 deletions .changelog/8007.txt
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Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
```release-note:enhancement
dns: added `regionalL7ilb` enum support to the `routing_policy.load_balancer_type` field in `google_dns_record_set`

```
4 changes: 2 additions & 2 deletions google/resource_dns_record_set.go
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Original file line number Diff line number Diff line change
Expand Up @@ -258,8 +258,8 @@ var healthCheckedTargetSchema *schema.Resource = &schema.Resource{
"load_balancer_type": {
Type: schema.TypeString,
Required: true,
Description: `The type of load balancer. This value is case-sensitive. Possible values: ["regionalL4ilb"]`,
ValidateFunc: validation.StringInSlice([]string{"regionalL4ilb"}, false),
Description: `The type of load balancer. This value is case-sensitive. Possible values: ["regionalL4ilb", "regionalL7ilb]`,
ValidateFunc: validation.StringInSlice([]string{"regionalL4ilb", "regionalL7ilb"}, false),
},
"ip_address": {
Type: schema.TypeString,
Expand Down
114 changes: 114 additions & 0 deletions google/resource_dns_record_set_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -269,7 +269,11 @@ func TestAccDNSRecordSet_routingPolicy(t *testing.T) {
t.Parallel()

networkName := fmt.Sprintf("tf-test-network-%s", RandString(t, 10))
proxySubnetName := fmt.Sprintf("tf-test-proxy-subnet-%s", RandString(t, 10))
httpHealthCheckName := fmt.Sprintf("tf-test-http-health-check-%s", RandString(t, 10))
backendName := fmt.Sprintf("tf-test-backend-%s", RandString(t, 10))
urlMapName := fmt.Sprintf("tf-test-url-map-%s", RandString(t, 10))
httpProxyName := fmt.Sprintf("tf-test-http-proxy-%s", RandString(t, 10))
forwardingRuleName := fmt.Sprintf("tf-test-forwarding-rule-%s", RandString(t, 10))
zoneName := fmt.Sprintf("dnszone-test-%s", RandString(t, 10))
VcrTest(t, resource.TestCase{
Expand Down Expand Up @@ -304,6 +308,15 @@ func TestAccDNSRecordSet_routingPolicy(t *testing.T) {
ImportState: true,
ImportStateVerify: true,
},
{
Config: testAccDnsRecordSet_routingPolicyRegionalL7PrimaryBackup(networkName, proxySubnetName, httpHealthCheckName, backendName, urlMapName, httpProxyName, forwardingRuleName, zoneName, 300),
},
{
ResourceName: "google_dns_record_set.foobar",
ImportStateId: fmt.Sprintf("%s/%s/test-record.%s.hashicorptest.com./A", acctest.GetTestProjectFromEnv(), zoneName, zoneName),
ImportState: true,
ImportStateVerify: true,
},
},
})
}
Expand Down Expand Up @@ -727,6 +740,107 @@ resource "google_dns_record_set" "foobar" {
`, networkName, backendName, forwardingRuleName, zoneName, zoneName, zoneName, ttl)
}

func testAccDnsRecordSet_routingPolicyRegionalL7PrimaryBackup(networkName, proxySubnetName, healthCheckName, backendName, urlMapName, httpProxyName, forwardingRuleName, zoneName string, ttl int) string {
return fmt.Sprintf(`
resource "google_compute_network" "default" {
name = "%s"
}

resource "google_compute_subnetwork" "proxy_subnet" {
name = "%s"
ip_cidr_range = "10.100.0.0/24"
region = "us-central1"
purpose = "INTERNAL_HTTPS_LOAD_BALANCER"
role = "ACTIVE"
network = google_compute_network.default.id
}

resource "google_compute_region_health_check" "health_check" {
name = "%s"
region = "us-central1"

http_health_check {
port = 80
}
}

resource "google_compute_region_backend_service" "backend" {
name = "%s"
region = "us-central1"
load_balancing_scheme = "INTERNAL_MANAGED"
protocol = "HTTP"
health_checks = [google_compute_region_health_check.health_check.id]
}

resource "google_compute_region_url_map" "url_map" {
name = "%s"
region = "us-central1"
default_service = google_compute_region_backend_service.backend.id
}

resource "google_compute_region_target_http_proxy" "http_proxy" {
name = "%s"
region = "us-central1"
url_map = google_compute_region_url_map.url_map.id
}

resource "google_compute_forwarding_rule" "default" {
name = "%s"
region = "us-central1"
depends_on = [google_compute_subnetwork.proxy_subnet]
load_balancing_scheme = "INTERNAL_MANAGED"
target = google_compute_region_target_http_proxy.http_proxy.id
port_range = "80"
allow_global_access = true
network = google_compute_network.default.name
ip_protocol = "TCP"
}

resource "google_dns_managed_zone" "parent-zone" {
name = "%s"
dns_name = "%s.hashicorptest.com."
description = "Test Description"
visibility = "private"
}

resource "google_dns_record_set" "foobar" {
managed_zone = google_dns_managed_zone.parent-zone.name
name = "test-record.%s.hashicorptest.com."
type = "A"
ttl = %d

routing_policy {
primary_backup {
trickle_ratio = 0.1
enable_geo_fencing_for_backups = true

primary {
internal_load_balancers {
load_balancer_type = "regionalL7ilb"
ip_address = google_compute_forwarding_rule.default.ip_address
port = "80"
ip_protocol = "tcp"
network_url = google_compute_network.default.id
project = google_compute_forwarding_rule.default.project
region = google_compute_forwarding_rule.default.region
}
}

backup_geo {
location = "us-west1"
rrdatas = ["1.2.3.4"]
}

backup_geo {
location = "asia-east1"
rrdatas = ["5.6.7.8"]
}
}
}
}
`, networkName, proxySubnetName, healthCheckName, backendName, urlMapName, httpProxyName, forwardingRuleName, zoneName, zoneName, zoneName, ttl)
}

func testAccDnsRecordSet_interpolated(zoneName string) string {
return fmt.Sprintf(`
resource "google_dns_managed_zone" "parent-zone" {
Expand Down
101 changes: 100 additions & 1 deletion website/docs/r/dns_record_set.html.markdown
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Original file line number Diff line number Diff line change
Expand Up @@ -228,6 +228,7 @@ resource "google_compute_forwarding_rule" "prod" {
backend_service = google_compute_region_backend_service.prod.id
all_ports = true
network = google_compute_network.prod.name
allow_global_access = true
}

resource "google_compute_region_backend_service" "prod" {
Expand All @@ -240,6 +241,104 @@ resource "google_compute_network" "prod" {
}
```

#### Primary-Backup with a regional L7 ILB

```hcl
resource "google_dns_record_set" "a" {
name = "backend.${google_dns_managed_zone.prod.dns_name}"
managed_zone = google_dns_managed_zone.prod.name
type = "A"
ttl = 300

routing_policy {
primary_backup {
trickle_ratio = 0.1

primary {
internal_load_balancers {
load_balancer_type = "regionalL7ilb"
ip_address = google_compute_forwarding_rule.prod.ip_address
port = "80"
ip_protocol = "tcp"
network_url = google_compute_network.prod.id
project = google_compute_forwarding_rule.prod.project
region = google_compute_forwarding_rule.prod.region
}
}

backup_geo {
location = "asia-east1"
rrdatas = ["10.128.1.1"]
}

backup_geo {
location = "us-west1"
rrdatas = ["10.130.1.1"]
}
}
}
}

resource "google_dns_managed_zone" "prod" {
name = "prod-zone"
dns_name = "prod.mydomain.com."
}

resource "google_compute_forwarding_rule" "prod" {
name = "prod-ilb"
region = "us-central1"
depends_on = [google_compute_subnetwork.prod_proxy]
load_balancing_scheme = "INTERNAL_MANAGED"
target = google_compute_region_target_http_proxy.prod.id
port_range = "80"
allow_global_access = true
network = google_compute_network.prod.name
ip_protocol = "TCP"
}

resource "google_compute_region_target_http_proxy" "prod" {
name = "prod-http-proxy"
region = "us-central1"
url_map = google_compute_region_url_map.prod.id
}

resource "google_compute_region_url_map" "prod" {
name = "prod-url-map"
region = "us-central1"
default_service = google_compute_region_backend_service.prod.id
}

resource "google_compute_region_backend_service" "prod" {
name = "prod-backend"
region = "us-central1"
load_balancing_scheme = "INTERNAL_MANAGED"
protocol = "HTTP"
health_checks = [google_compute_region_health_check.prod.id]
}

resource "google_compute_region_health_check" "prod" {
name = "prod-http-health-check"
region = "us-central1"

http_health_check {
port = 80
}
}

resource "google_compute_subnetwork" "prod_proxy" {
name = "prod-proxy-subnet"
ip_cidr_range = "10.100.0.0/24"
region = "us-central1"
purpose = "INTERNAL_HTTPS_LOAD_BALANCER"
role = "ACTIVE"
network = google_compute_network.prod.id
}

resource "google_compute_network" "prod" {
name = "prod-network"
}
```

## Argument Reference

The following arguments are supported:
Expand Down Expand Up @@ -315,7 +414,7 @@ The following arguments are supported:

<a name="nested_internal_load_balancers"></a>The `internal_load_balancers` block supports:

* `load_balancer_type` - (Required) The type of load balancer. This value is case-sensitive. Possible values: ["regionalL4ilb"]
* `load_balancer_type` - (Required) The type of load balancer. This value is case-sensitive. Possible values: ["regionalL4ilb", "regionalL7ilb"]

* `ip_address` - (Required) The frontend IP address of the load balancer.

Expand Down