diff --git a/r/container_cluster.html.markdown b/r/container_cluster.html.markdown
index a667323b..9c2306fe 100644
--- a/r/container_cluster.html.markdown
+++ b/r/container_cluster.html.markdown
@@ -20,6 +20,11 @@ resource "google_container_cluster" "primary" {
zone = "us-central1-a"
initial_node_count = 3
+ additional_zones = [
+ "us-central1-b",
+ "us-central1-c"
+ ]
+
master_auth {
username = "mr.yoda"
password = "adoy.rm"
@@ -47,9 +52,13 @@ resource "google_container_cluster" "primary" {
* `name` - (Required) The name of the cluster, unique within the project and
zone.
-* `zone` - (Required) The zone that all resources should be created in.
+* `zone` - (Required) The zone that the master and the number of nodes specified
+ in `initial_node_count` should be created in.
- - -
+* `additional_zones` - (Optional) If additional zones are configured, the number
+ of nodes specified in `initial_node_count` is created in all specified zones.
+
* `addons_config` - (Optional) The configuration for addons supported by Google
Container Engine