[autoscaler] Remove min workers from multi node type examples (#13814)

* prepare for head node

* move command runner interface outside _private

* remove space

* Eric

* flake

* min_workers in multi node type

* fixing edge cases

* eric not idle

* fix target_workers to consider min_workers of node types

* idle timeout

* minor

* minor fix

* test

* lint

* eric v2

* eric 3

* min_workers constraint before bin packing

* Update resource_demand_scheduler.py

* Revert "Update resource_demand_scheduler.py"

This reverts commit 818a63a2c86d8437b3ef21c5035d701c1d1127b5.

* reducing diff

* make get_nodes_to_launch return a dict

* merge

* weird merge fix

* auto fill instance types for AWS

* Alex/Eric

* Update doc/source/cluster/autoscaling.rst

* merge autofill and input from user

* logger.exception

* make the yaml use the default autofill

* docs Eric

* remove test_autoscaler_yaml from windows tests

* lets try changing the test a bit

* return test

* lets see

* edward

* Limit max launch concurrency

* commenting frac TODO

* move to resource demand scheduler

* use STATUS UP TO DATE

* Eric

* make logger of gc freed refs debug instead of info

* add cluster name to docker mount prefix directory

* grrR

* fix tests

* moving docker directory to sdk

* move the import to prevent circular dependency

* smallf fix

* ian

* fix max launch concurrency bug to assume failing nodes as pending and consider only load_metric's connected nodes as running

* small fix

* remove global min_workers from mult-node-type-examples

Co-authored-by: Ameer Haj Ali <ameerhajali@ameers-mbp.lan>
Co-authored-by: Alex Wu <alex@anyscale.io>
Co-authored-by: Alex Wu <itswu.alex@gmail.com>
Co-authored-by: Eric Liang <ekhliang@gmail.com>
Co-authored-by: Ameer Haj Ali <ameerhajali@Ameers-MacBook-Pro.local>

python/ray/autoscaler/_private/util.py

@@ -124,7 +124,7 @@ def rewrite_legacy_yaml_to_available_node_types(
             },
         }
         config["head_node_type"] = NODE_TYPE_LEGACY_HEAD
-
+        del config["min_workers"]
     return config
 
 

python/ray/autoscaler/aws/example-multi-node-type.yaml

@@ -1,6 +1,5 @@
 # Experimental: an example of configuring a mixed-node-type cluster.
 cluster_name: multi_node_type
-min_workers: 1
 max_workers: 40
 
 # The autoscaler will scale up the cluster faster with higher upscaling speed.

python/ray/autoscaler/staroid/example-multi-node-type.yaml

@@ -1,6 +1,5 @@
 # an example of configuring a mixed-node-type cluster.
 cluster_name: multi-node-type # name with 'a-z' and '-'
-min_workers: 1
 max_workers: 40
 
 # The autoscaler will scale up the cluster faster with higher upscaling speed.