Merge pull request #46444 from rkachach/fix_issue_55800

mgr/cephadm: check if a service exists before trying to restart it

Reviewed-by: Adam King <adking@redhat.com>
Reviewed-by: Michael Fritch <mfritch@suse.com>

src/pybind/mgr/cephadm/module.py

@@ -1890,6 +1890,9 @@ def list_daemons(self,
 
     @handle_orch_error
     def service_action(self, action: str, service_name: str) -> List[str]:
+        if service_name not in self.spec_store.all_specs.keys():
+            raise OrchestratorError(f'Invalid service name "{service_name}".'
+                                    + ' View currently running services using "ceph orch ls"')
         dds: List[DaemonDescription] = self.cache.get_daemons_by_service(service_name)
         if not dds:
             raise OrchestratorError(f'No daemons exist under service name "{service_name}".'