From 406eecbfe6bc69e7f7dec4745ac7fdbb7766f30d Mon Sep 17 00:00:00 2001
From: The Magician <magic-modules@google.com>
Date: Mon, 5 Nov 2018 08:45:11 -0800
Subject: [PATCH] google_bigtable_instance add back validation to num_nodes.
 (#2401)

---
 google/resource_bigtable_instance.go          |  5 +++--
 .../docs/r/bigtable_instance.html.markdown    | 22 ++++++++++++++++---
 2 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/google/resource_bigtable_instance.go b/google/resource_bigtable_instance.go
index 30c303da..aa020815 100644
--- a/google/resource_bigtable_instance.go
+++ b/google/resource_bigtable_instance.go
@@ -40,8 +40,9 @@ func resourceBigtableInstance() *schema.Resource {
 							Required: true,
 						},
 						"num_nodes": {
-							Type:     schema.TypeInt,
-							Optional: true,
+							Type:         schema.TypeInt,
+							Optional:     true,
+							ValidateFunc: validation.IntAtLeast(3),
 						},
 						"storage_type": {
 							Type:         schema.TypeString,
diff --git a/website/docs/r/bigtable_instance.html.markdown b/website/docs/r/bigtable_instance.html.markdown
index 99c9dd91..afdf4897 100644
--- a/website/docs/r/bigtable_instance.html.markdown
+++ b/website/docs/r/bigtable_instance.html.markdown
@@ -13,11 +13,12 @@ Creates a Google Bigtable instance. For more information see
 [API](https://cloud.google.com/bigtable/docs/go/reference).
 
 
-## Example Usage
+## Example Usage - Production Instance
 
 ```hcl
-resource "google_bigtable_instance" "instance" {
+resource "google_bigtable_instance" "production-instance" {
   name         = "tf-instance"
+
   cluster {
     cluster_id   = "tf-instance-cluster"
     zone         = "us-central1-b"
@@ -27,6 +28,21 @@ resource "google_bigtable_instance" "instance" {
 }
 ```
 
+## Example Usage - Development Instance
+
+```hcl
+resource "google_bigtable_instance" "development-instance" {
+  name          = "tf-instance"
+  instance_type = "DEVELOPMENT"
+
+  cluster {
+    cluster_id   = "tf-instance-cluster"
+    zone         = "us-central1-b"
+    storage_type = "HDD"
+  }
+}
+```
+
 ## Argument Reference
 
 The following arguments are supported:
@@ -53,7 +69,7 @@ The `cluster` block supports the following arguments:
 
 * `zone` - (Required) The zone to create the Cloud Bigtable cluster in. Each cluster must have a different zone in the same region. Zones that support Bigtable instances are noted on the [Cloud Bigtable locations page](https://cloud.google.com/bigtable/docs/locations).
 
-* `num_nodes` - (Optional) The number of nodes in your Cloud Bigtable cluster. Required, with a minimum of `3` for a `PRODUCTION` instance. Cannot be set for a `DEVELOPMENT` instance.
+* `num_nodes` - (Optional) The number of nodes in your Cloud Bigtable cluster. Required, with a minimum of `3` for a `PRODUCTION` instance. Must be left unset for a `DEVELOPMENT` instance.
 
 * `storage_type` - (Optional) The storage type to use. One of `"SSD"` or `"HDD"`. Defaults to `"SSD"`.