While starting the Elastic Search on the above Environment (RHEL 7.6, S@S 4.5), it is failing with error during start_process () in es_master.py

Hi,

We are using ES v 2.3.1 and upgraded our OS to RHEL 7.6
After upgrade, the ES is not starting due to the following error message-

2019-03-20 15:42:07,790 - Process is not up after the polling interval 10 seconds.

2019-03-20 15:42:07,791 - (None, None)

2019-03-20 15:42:07,792 - Error while executing command 'start':

Traceback (most recent call last):

File "/hadoop/yarn/local/usercache/ilmsatsqe/appcache/application_1553062644705_0015/filecache/77/slider-agent.tar.gz/slider-agent/resource_management/libraries/script/script.py", line 116, in execute

method(env)

File "/hadoop/yarn/local/usercache/ilmsatsqe/appcache/application_1553062644705_0015/filecache/126/elasticsearch-4.5.0-SNAPSHOT-yarn.zip/package/scripts/es_master.py", line 41, in start

node_data="true")

File "/hadoop/yarn/local/usercache/ilmsatsqe/appcache/application_1553062644705_0015/filecache/126/elasticsearch-4.5.0-SNAPSHOT-yarn.zip/package/scripts/es_node.py", line 64, in start_process

cwd=format("{app_root}")

File "/hadoop/yarn/local/usercache/ilmsatsqe/appcache/application_1553062644705_0015/filecache/77/slider-agent.tar.gz/slider-agent/resource_management/core/base.py", line 148, in init

self.env.run()

File "/hadoop/yarn/local/usercache/ilmsatsqe/appcache/application_1553062644705_0015/filecache/77/slider-agent.tar.gz/slider-agent/resource_management/core/environment.py", line 149, in run

self.run_action(resource, action)

File "/hadoop/yarn/local/usercache/ilmsatsqe/appcache/application_1553062644705_0015/filecache/77/slider-agent.tar.gz/slider-agent/resource_management/core/environment.py", line 115, in run_action

Can anyone please help me in resolving this error so that ES can start?

I have put some debug statements in es_master.py, but these are not printed in our application log file.
Is the debug log from this file being redirected to dev null?

Thanks,
Harsimran

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