un-hardcode default subnet az

allow defining 'default_az' for one of the subnets in the vpc structure, and pull that default_az and set it to openshift_aws_subnet_az.

this should allow one less variable to have to be defined/overridded (openshift_aws_subnet_az) when using non-default (us-east-1) regions

update provisioning_vars.yml.example to show an example VPC structure

1 files changed, 17 insertions, 1 deletions

diff --git a/playbooks/aws/provisioning_vars.yml.example b/playbooks/aws/provisioning_vars.yml.example
index f6b1a6b5d..a1a8a5b08 100644
--- a/playbooks/aws/provisioning_vars.yml.example
+++ b/playbooks/aws/provisioning_vars.yml.example
@@ -41,11 +41,27 @@ openshift_pkg_version: # -3.7.0
 # a vpc, set this to false.
 #openshift_aws_create_vpc: true
 
+# when openshift_aws_create_vpc is true (the default), the VPC defined in
+# openshift_aws_vpc will be created
+#openshift_aws_vpc:
+#  name: "{{ openshift_aws_vpc_name }}"
+#  cidr: 172.31.0.0/16
+#  subnets:
+#    us-east-1:
+#    - cidr: 172.31.48.0/20
+#      az: "us-east-1c"
+#      default_az: true
+#    - cidr: 172.31.32.0/20
+#      az: "us-east-1e"
+#    - cidr: 172.31.16.0/20
+#      az: "us-east-1a"
+
 # Name of the vpc.  Needs to be set if using a pre-existing vpc.
 #openshift_aws_vpc_name: "{{ openshift_aws_clusterid }}"
 
 # Name of the subnet in the vpc to use.  Needs to be set if using a pre-existing
-# vpc + subnet.
+# vpc + subnet. Otherwise will use the subnet with 'default_az' set (see above
+# example VPC structure)
 #openshift_aws_subnet_az:
 
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