lib/chef/knife/ec2_server_create.rb in knife-ec2-1.0.16 vs lib/chef/knife/ec2_server_create.rb in knife-ec2-1.0.17

@@ -276,11 +276,10 @@
         }
 
       option :cpu_credits,
         long: "--cpu-credits CPU_CREDITS",
         description: "The credit option for CPU usage of the instance. Valid values are standard and unlimited. T3 instances launch as unlimited by default. T2 instances launch as standard by default.",
-        default: "standard",
         in: %w{standard unlimited}
 
       def plugin_create_instance!
         requested_elastic_ip = config[:associate_eip] if config[:associate_eip]
 
@@ -982,13 +981,15 @@
         ## cannot pass disable_api_termination option to the API when using spot instances ##
         attributes[:disable_api_termination] = config_value(:disable_api_termination) if config_value(:spot_price).nil?
 
         attributes[:instance_initiated_shutdown_behavior] = config_value(:instance_initiated_shutdown_behavior)
 
-        attributes[:credit_specification] =
-          {
-            cpu_credits: config[:cpu_credits],
-          }
+        if config[:cpu_credits]
+          attributes[:credit_specification] =
+            {
+              cpu_credits: config[:cpu_credits],
+            }
+        end
         attributes
       end
 
       def create_ec2_instance(attributes)
         ec2_connection.run_instances(attributes)