Error starting NodeManager

[#1]

when I am trying to start the nodemanager I am getting 

Caused by: java.io.IOException: Not able to enforce cpu weights; cannot write to cgroup at: /sys/fs/cgroup/cpu,cpuacct

[#2]

Permission on the directory :
ls -ld cpu,cpuacct
drwxr-xr-x 5 root root 0 Feb 19 20:52 cpu,cpuacct

[#3]

@Chetankumar  Can you please share complete stack trace of the error

Also confirm cdh/ hdp version

[#4]

Getting fatal Error on. "org.apache.hadoop.yarn.server.nodemanager.NodeManager"

Error starting NodeManager
org.apache.hadoop.yarn.exceptions.YarnRuntimeException: Failed to initialize container executor
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:251)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:544)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:591)
Caused by: java.io.IOException: Not able to enforce cpu weights; cannot write to cgroup at: /sys/fs/cgroup/cpu,cpuacct
at org.apache.hadoop.yarn.server.nodemanager.util.CgroupsLCEResourcesHandler.initializeControllerPaths(CgroupsLCEResourcesHandler.java:502)
at org.apache.hadoop.yarn.server.nodemanager.util.CgroupsLCEResourcesHandler.init(CgroupsLCEResourcesHandler.java:154)
at org.apache.hadoop.yarn.server.nodemanager.util.CgroupsLCEResourcesHandler.init(CgroupsLCEResourcesHandler.java:137)
at org.apache.hadoop.yarn.server.nodemanager.LinuxContainerExecutor.init(LinuxContainerExecutor.java:215)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:249)
... 3 more

Version: Hadoop 2.6.0-cdh5.10.2    Cloudera express

[#5]

We have made changes to Static Service Pools in CM and now it failed to start the node manager. Could you please let me know how can we revert it back to original? This is cloudera express version.
@Scharan