Difference between revisions of "Heat/Environments"

Latest revision as of 23:21, 29 May 2013

What is an Environment?

I see an Environment as a container for anything that affects the behavior of the Template (kinda like structured parameters).

So parameters can be written into an environment file or automatically inserted if you pass them on the cli.
You define any non-default Providers in the Environment
You can define any extra/non-keystone credentials in the Environment

Template	Static architectural design of your application
Environment	Specific details that affect the instantiation of the Template
Stack	Template + Environment

Example

 parameters:
   InstanceType: m1.xlarge
   DBUsername: angus
   DBPassword: verybadpass
   KeyName: heat_key
 credentials:
   rackspace_creds:
       username: myusername
       api_key: 012345abcdef67890
 resources:
   provider: rackspace.com
   DatabaseServer:
       ImageId: this_image_please
       credentials: rackspace_creds

@@ Line 5: / Line 5: @@
 # You define any non-default Providers in the Environment
 # You can define any extra/non-keystone credentials in the Environment
-# other arguments passed into the stack and stored (Timeout & rollback)
 {| class="wikitable"
@@ Line 18: / Line 17: @@
 '''Example'''
-   options:
+   parameters:
-  #Parameters and other global options
      InstanceType: m1.xlarge
      DBUsername: angus
      DBPassword: verybadpass
      KeyName: heat_key
-    timeout: 36000
-    disable_rollback: True
    credentials:
-     #note the keystone credentials will get inserted here as "keystone"
+     rackspace_creds:
-    rax_angus:
          username: myusername
          api_key: 012345abcdef67890
    resources:
-  # resource scoped options
+    provider: rackspace.com
      DatabaseServer:
-         Provider: RACKSPACE
+         ImageId: this_image_please
-         Credentials: rax_angus
+         credentials: rackspace_creds
-    WebServer:
-        Provider: RACKSPACE
-        Credentials: rax_angus