the fix

sanderegg · sanderegg · commit a83d521dc288 · 2025-08-26T11:56:25.000+02:00
diff --git a/services/autoscaling/src/simcore_service_autoscaling/modules/cluster_scaling/_warm_buffer_machines_pool_core.py b/services/autoscaling/src/simcore_service_autoscaling/modules/cluster_scaling/_warm_buffer_machines_pool_core.py
@@ -314,7 +314,7 @@ async def _add_remove_buffer_instances(
                 subnet_id=app_settings.AUTOSCALING_EC2_INSTANCES.EC2_INSTANCES_SUBNET_ID,
                 iam_instance_profile=app_settings.AUTOSCALING_EC2_INSTANCES.EC2_INSTANCES_ATTACHED_IAM_PROFILE,
             ),
-            min_number_of_instances=num_to_start,
+            min_number_of_instances=1,  # NOTE: we want at least 1
             number_of_instances=num_to_start,
             max_total_number_of_instances=app_settings.AUTOSCALING_EC2_INSTANCES.EC2_INSTANCES_MAX_INSTANCES,
         )

Original file line number	Diff line number	Diff line change
`@@ -314,7 +314,7 @@ async def _add_remove_buffer_instances(`
`314`	`314`	`subnet_id=app_settings.AUTOSCALING_EC2_INSTANCES.EC2_INSTANCES_SUBNET_ID,`
`315`	`315`	`iam_instance_profile=app_settings.AUTOSCALING_EC2_INSTANCES.EC2_INSTANCES_ATTACHED_IAM_PROFILE,`
`316`	`316`	`),`
`317`		`- min_number_of_instances=num_to_start,`
	`317`	`+ min_number_of_instances=1, # NOTE: we want at least 1`
`318`	`318`	`number_of_instances=num_to_start,`
`319`	`319`	`max_total_number_of_instances=app_settings.AUTOSCALING_EC2_INSTANCES.EC2_INSTANCES_MAX_INSTANCES,`
`320`	`320`	`)`