Add more control over rabbit and worker instance types.

cloudformation_templates/edx-reference-architecture.json

@@ -35,6 +35,52 @@
       ],
       "ConstraintDescription":"must be a valid EC2 instance type."
     },
+    "WorkerInstanceType":{
+      "Description":"Worker EC2 instance type",
+      "Type":"String",
+      "Default":"m1.small",
+      "AllowedValues":[
+        "t1.micro",
+        "m1.small",
+        "m1.medium",
+        "m1.large",
+        "m1.xlarge",
+        "m2.xlarge",
+        "m2.2xlarge",
+        "m2.4xlarge",
+        "m3.xlarge",
+        "m3.2xlarge",
+        "c1.medium",
+        "c1.xlarge",
+        "cc1.4xlarge",
+        "cc2.8xlarge",
+        "cg1.4xlarge"
+      ],
+      "ConstraintDescription":"must be a valid EC2 instance type."
+    },
+    "RabbitInstanceType":{
+      "Description":"RabbitMQ server EC2 instance type",
+      "Type":"String",
+      "Default":"m1.small",
+      "AllowedValues":[
+        "t1.micro",
+        "m1.small",
+        "m1.medium",
+        "m1.large",
+        "m1.xlarge",
+        "m2.xlarge",
+        "m2.2xlarge",
+        "m2.4xlarge",
+        "m3.xlarge",
+        "m3.2xlarge",
+        "c1.medium",
+        "c1.xlarge",
+        "cc1.4xlarge",
+        "cc2.8xlarge",
+        "cg1.4xlarge"
+      ],
+      "ConstraintDescription":"must be a valid EC2 instance type."
+    },
     "SSHLocation":{
       "Description":"The IP address range that can be used to SSH to the EC2 instances",
       "Type":"String",
@@ -2833,7 +2879,7 @@
               "Fn::FindInMap":[
                 "AWSInstanceType2Arch",
                 {
-                  "Ref":"InstanceType"
+                  "Ref":"RabbitInstanceType"
                 },
                 "Arch"
               ]
@@ -3715,7 +3761,7 @@
               "Fn::FindInMap":[
                 "AWSInstanceType2Arch",
                 {
-                  "Ref":"InstanceType"
+                  "Ref":"WorkerInstanceType"
                 },
                 "Arch"
               ]