Logging fixes. (skypilot-org#1452)

* Logging fixes.

* yapf

* sys.exit(1)

Author: concretevitamin

sky/cli.py

@@ -1025,8 +1025,11 @@ def _add_command_alias_to_group(group, command, name, hidden):
     new_command = copy.deepcopy(command)
     new_command.hidden = hidden
     new_command.name = name
-    new_command.invoke = _with_deprecation_warning(new_command.invoke,
-                                                   command.name, name)
+
+    orig = f'sky {group.name} {command.name}'
+    alias = f'sky {group.name} {name}'
+    new_command.invoke = _with_deprecation_warning(new_command.invoke, orig,
+                                                   alias)
     group.add_command(new_command, name=name)
 
 
@@ -3031,7 +3034,11 @@ def spot_cancel(name: Optional[str], job_ids: Tuple[int], all: bool, yes: bool):
 @usage_lib.entrypoint
 def spot_logs(name: Optional[str], job_id: Optional[int], follow: bool):
     """Tail the log of a managed spot job."""
-    core.spot_tail_logs(name=name, job_id=job_id, follow=follow)
+    try:
+        core.spot_tail_logs(name=name, job_id=job_id, follow=follow)
+    except exceptions.ClusterNotUpError:
+        # Hint messages already printed by the call above.
+        sys.exit(1)
 
 
 # ==============================

sky/spot/recovery_strategy.py

@@ -123,9 +123,9 @@ def _try_cancel_all_jobs(self):
         except Exception as e:  # pylint: disable=broad-except
             # Ignore the failure as the cluster can be totally stopped, and the
             # job canceling can get connection error.
-            logger.info(
-                f'Ignoring the job cancellation failure (Exception: {e}); '
-                'the spot cluster is likely completely stopped.')
+            logger.info('Ignoring the job cancellation failure; '
+                        'the spot cluster is likely completely stopped.'
+                        f'\n  Detailed exception: {e}')
 
     def _launch(self, max_retry=3, raise_on_failure=True) -> Optional[float]:
         """Implementation of launch().