Add ability to specify worker and driver ports (#7833)

python/ray/services.py

@@ -1223,6 +1223,8 @@ def start_raylet(redis_address,
                  temp_dir,
                  session_dir,
                  resource_spec,
+                 min_worker_port=None,
+                 max_worker_port=None,
                  object_manager_port=None,
                  redis_password=None,
                  use_valgrind=False,
@@ -1251,6 +1253,10 @@ def start_raylet(redis_address,
         resource_spec (ResourceSpec): Resources for this raylet.
         object_manager_port: The port to use for the object manager. If this is
             None, then the object manager will choose its own port.
+        min_worker_port (int): The lowest port number that workers will bind
+            on. If not set, random ports will be chosen.
+        max_worker_port (int): The highest port number that workers will bind
+            on. If set, min_worker_port must also be set.
         redis_password: The password to use when connecting to Redis.
         use_valgrind (bool): True if the raylet should be started inside
             of valgrind. If this is True, use_profiler must be False.
@@ -1328,6 +1334,12 @@ def start_raylet(redis_address,
     if object_manager_port is None:
         object_manager_port = 0
 
+    if min_worker_port is None:
+        min_worker_port = 0
+
+    if max_worker_port is None:
+        max_worker_port = 0
+
     if load_code_from_local:
         start_worker_command += ["--load-code-from-local"]
 
@@ -1336,6 +1348,8 @@ def start_raylet(redis_address,
         "--raylet_socket_name={}".format(raylet_name),
         "--store_socket_name={}".format(plasma_store_name),
         "--object_manager_port={}".format(object_manager_port),
+        "--min_worker_port={}".format(min_worker_port),
+        "--max_worker_port={}".format(max_worker_port),
         "--node_manager_port={}".format(node_manager_port),
         "--node_ip_address={}".format(node_ip_address),
         "--redis_address={}".format(gcs_ip_address),