* use ip instead of hostname in examples (#230)

* decrease default budget to 1

examples/outbound_tester.py

@@ -33,6 +33,12 @@
 ray.init()
 
 
+def get_own_ip():
+    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    s.connect(("192.168.0.1", 1))
+    return s.getsockname()[0]
+
+
 @dataclass
 class UrlResult:
     node_ip: str
@@ -54,7 +60,7 @@ def exc_causes(e: BaseException):
 
 @ray.remote
 def get_url_len(url: str, num_attempts: int, timeout: int, keep_alive: bool) -> UrlResult:
-    node_ip = socket.gethostbyname(socket.gethostname())
+    node_ip = get_own_ip()
     start = datetime.now()
 
     def seconds():

examples/simple-actor.py

@@ -7,6 +7,12 @@
 ray.init()
 
 
+def get_own_ip():
+    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    s.connect(("192.168.0.1", 1))
+    return s.getsockname()[0]
+
+
 @ray.remote
 class CounterActor:
     def __init__(self):
@@ -17,7 +23,7 @@ def increment(self):
         time.sleep(0.5)
         self.value += 1
 
-        node_ip = socket.gethostname()
+        node_ip = get_own_ip()
         self.node_ips.append(node_ip)
 
         return node_ip

examples/simple-task.py

@@ -8,6 +8,12 @@
 ray.init()
 
 
+def get_own_ip():
+    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    s.connect(("192.168.0.1", 1))
+    return s.getsockname()[0]
+
+
 def output_cluster_info():
     print(
         """This cluster consists of
@@ -28,7 +34,7 @@ def output_cluster_info():
 def f():
     time.sleep(0.5)
 
-    return socket.gethostname()
+    return get_own_ip()
 
 
 # get the number of remote calls from the command line

golem-cluster.yaml

@@ -26,7 +26,7 @@ provider:
     #payment_network: "polygon"
 
     # Maximum amount of GLMs that's going to be spent for the whole cluster
-    total_budget: 5
+    total_budget: 1
 
     # Common parameters for all node types. Can be overridden in available_node_types
     node_config: