[minor] improve warning message for Ray (#15005)

python/ray/autoscaler/_private/util.py

@@ -12,9 +12,10 @@ from typing import Any, Dict, List
 import ray
 import ray.ray_constants
 import ray._private.services as services
+from ray.autoscaler._private import constants
 from ray.autoscaler._private.providers import _get_default_config
 from ray.autoscaler._private.docker import validate_docker_config
-from ray.autoscaler._private import constants
+from ray.autoscaler._private.cli_logger import cli_logger
 from ray.autoscaler.tags import NODE_TYPE_LEGACY_WORKER, NODE_TYPE_LEGACY_HEAD
 
 REQUIRED, OPTIONAL = True, False
@@ -144,11 +145,12 @@ def merge_legacy_yaml_with_defaults(
     """Rewrite legacy config's available node types after it has been merged
     with defaults yaml.
     """
-    logger.warning("Converting legacy cluster config to multi node types.\n"
-                   "Refer to the docs for examples of multi-node-type "
-                   "autoscaling:\n"
-                   "https://docs.ray.io/en/master/cluster/config.html"
-                   "#full-configuration")
+    cli_logger.warning(
+        "Converting legacy cluster config to a multi node type cluster "
+        "config. Multi-node-type cluster configs are the recommended "
+        "format for configuring Ray clusters. "
+        "See the docs for more information:\n"
+        "https://docs.ray.io/en/master/cluster/config.html#full-configuration")
 
     # Get default head and worker types.
     default_head_type = merged_config["head_node_type"]

python/ray/tests/test_cli_patterns/test_ray_up_config.yaml

@@ -3,9 +3,20 @@ auth:
 cluster_name: test-cli
 file_mounts:
     ~/tests: .
-head_node:
-    ImageId: latest_dlami
-    InstanceType: t1.micro
+available_node_types:
+    head_node:
+        resources: {}
+        node_config:
+            ImageId: latest_dlami
+            InstanceType: t1.micro
+    worker_nodes:
+        resources: {}
+        max_workers: 2
+        min_workers: 1
+        node_config:
+            ImageId: latest_dlami
+            InstanceType: t1.micro
+head_node_type: head_node
 head_setup_commands:
     - echo head
 head_start_ray_commands:
@@ -14,8 +25,6 @@ head_start_ray_commands:
 idle_timeout_minutes: 5
 initialization_commands:
     - echo init
-max_workers: 2
-min_workers: 1
 provider:
     availability_zone: us-west-2a
     key_pair:
@@ -26,9 +35,6 @@ setup_commands:
     - echo a
     - echo b
     - echo ${echo hi}
-worker_nodes:
-    ImageId: latest_dlami
-    InstanceType: t1.micro
 worker_setup_commands:
     - echo worker
 worker_start_ray_commands:

python/ray/tests/test_cli_patterns/test_ray_up_docker_config.yaml

@@ -8,9 +8,20 @@ docker:
     run_options: []
 file_mounts:
     ~/tests: .
-head_node:
-    ImageId: latest_dlami
-    InstanceType: t3a.small
+available_node_types:
+    head_node:
+        resources: {}
+        node_config:
+            ImageId: latest_dlami
+            InstanceType: t1.micro
+    worker_nodes:
+        resources: {}
+        max_workers: 2
+        min_workers: 1
+        node_config:
+            ImageId: latest_dlami
+            InstanceType: t1.micro
+head_node_type: head_node
 head_setup_commands:
     - echo head
 head_start_ray_commands:
@@ -19,8 +30,6 @@ head_start_ray_commands:
 idle_timeout_minutes: 5
 initialization_commands:
     - echo init
-max_workers: 2
-min_workers: 1
 provider:
     availability_zone: us-west-2a
     key_pair:
@@ -31,9 +40,6 @@ setup_commands:
     - echo a
     - echo b
     - echo ${echo hi}
-worker_nodes:
-    ImageId: latest_dlami
-    InstanceType: t3a.small
 worker_setup_commands:
     - echo worker
 worker_start_ray_commands: