Update README.md with exit codes

README.md

@@ -52,6 +52,13 @@ There are some special parameters that act different if present in a template:
 ### Troubleshooting
 Run the script with _--Debug true_ to disable stack rollback on failure.
 
+#### Error Exit Codes
+- 11: Wrong application-name, the template file could not be found
+- 12: Stack with same name already exists
+- 50: Unexpected behaviour while trying to detect S3 bucket ownership
+- 51: S3 bucket exists with the same name and you have no permissions over it
+
+
 ### Predefined tags
 The following tags will be created automatically with each stack:
 - application: the application name (template file name)

create-stack.py

@@ -28,12 +28,12 @@
         print("Found template file for application: " + application)
 except:
     sys.stderr.write("Error: Unknown application (template file not found): " + application)
-    sys.exit(1)
+    sys.exit(11)
 
 stackName = stack.create_stack_name(application, environment)
 if stack.stack_exists(stackName, session):
     sys.stderr.write("Error: Stack with name " + stackName + " already exists")
-    sys.exit(1)
+    sys.exit(12)
 
 cfClient = session.client('cloudformation')
 response = cfClient.validate_template(TemplateBody=templateContent)