genesis service fail

I've this error on the Prism Console: genesis is down on controller VM 10.1.82.21 I've run the command ncc health_checks system_checks cluster_status_check --cvm_list=10.1.82.21 and this is the error log:2016-11-10 00:16:00 INFO salt_helper.py:52 Verifying CVM salt states 2016-11-10 00:16:00 ERROR command.py:156 Failed to execute sudo /bin/ls /home/saltstates: [Errno 12] Cannot allocate memory 2016-11-10 00:16:00 CRITICAL decorators.py:46 Traceback (most recent call last): File "/home/hudsonb/workspace/workspace/User_builds/builds/build-danube-4.7.1-stable-release/python-tree/bdist.linux-x86_64/egg/util/misc/decorators.py", line 40, in wrapper File "/home/hudsonb/workspace/workspace/User_builds/builds/build-danube-4.7.1-stable-release/python-tree/bdist.linux-x86_64/egg/cluster/genesis/node_manager.py", line 2474, in sync_configuration_thr File "/home/hudsonb/workspace/workspace/User_builds/builds/build-danube-4.7.1-stable-release/python-tree/bdist.linux-x86_64/egg/cluster/genesis/node_manager.py", line 3779, in __sync_zeus_configuration File "/home/hudsonb/workspace/workspace/User_builds/builds/build-danube-4.7.1-stable-release/python-tree/bdist.linux-x86_64/egg/cluster/salt_helper.py", line 66, in sync_salt_configuration File "/home/hudsonb/workspace/workspace/User_builds/builds/build-danube-4.7.1-stable-release/python-tree/bdist.linux-x86_64/egg/util/base/command.py", line 157, in timed_command OSError: [Errno 12] Cannot allocate memory Can you help me?