https://community.cloudera.com/t5/Support-Questions/Unable-to-start-the-node-manager/m-p/286013#M212152 <P>Traceback (most recent call last):<BR />File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/YARN/package/scripts/nodemanager.py", line 102, in &lt;module&gt;<BR />Nodemanager().execute()<BR />File "/usr/lib/ambari-agent/lib/resource_management/libraries/script/script.py", line 351, in execute<BR />method(env)<BR />File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/YARN/package/scripts/nodemanager.py", line 53, in start<BR />service('nodemanager',action='start')<BR />File "/usr/lib/ambari-agent/lib/ambari_commons/os_family_impl.py", line 89, in thunk<BR />return fn(*args, **kwargs)<BR />File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/YARN/package/scripts/service.py", line 93, in service<BR />Execute(daemon_cmd, user = usr, not_if = check_process)<BR />File "/usr/lib/ambari-agent/lib/resource_management/core/base.py", line 166, in __init__<BR />self.env.run()<BR />File "/usr/lib/ambari-agent/lib/resource_management/core/environment.py", line 160, in run<BR />self.run_action(resource, action)<BR />File "/usr/lib/ambari-agent/lib/resource_management/core/environment.py", line 124, in run_action<BR />provider_action()<BR />File "/usr/lib/ambari-agent/lib/resource_management/core/providers/system.py", line 263, in action_run<BR />returns=self.resource.returns)<BR />File "/usr/lib/ambari-agent/lib/resource_management/core/shell.py", line 72, in inner<BR />result = function(command, **kwargs)<BR />File "/usr/lib/ambari-agent/lib/resource_management/core/shell.py", line 102, in checked_call<BR />tries=tries, try_sleep=try_sleep, timeout_kill_strategy=timeout_kill_strategy, returns=returns)<BR />File "/usr/lib/ambari-agent/lib/resource_management/core/shell.py", line 150, in _call_wrapper<BR />result = _call(command, **kwargs_copy)<BR />File "/usr/lib/ambari-agent/lib/resource_management/core/shell.py", line 314, in _call<BR />raise ExecutionFailed(err_msg, code, out, err)<BR />resource_management.core.exceptions.ExecutionFailed: Execution of 'ulimit -c unlimited; export HADOOP_LIBEXEC_DIR=/usr/hdp/3.0.1.0-187/hadoop/libexec &amp;&amp; /usr/hdp/3.0.1.0-187/hadoop-yarn/bin/yarn --config /usr/hdp/3.0.1.0-187/hadoop/conf --daemon start nodemanager' returned 1. -bash: line 0: ulimit: core file size: cannot modify limit: Operation not permitted<BR />/usr/hdp/3.0.1.0-187/hadoop/libexec/hadoop-functions.sh: line 1847: /var/run/hadoop-yarn/yarn/hadoop-yarn-nodemanager.pid: Permission denied<BR />ERROR: Cannot write nodemanager pid /var/run/hadoop-yarn/yarn/hadoop-yarn-nodemanager.pid.<BR />/usr/hdp/3.0.1.0-187/hadoop/libexec/hadoop-functions.sh: line 1866: /var/log/hadoop-yarn/yarn/hadoop-yarn-nodemanager</P> Thu, 19 Dec 2019 13:23:26 GMT saivenkatg55 2019-12-19T13:23:26Z