stderr: 
2017-08-16 05:21:54,756 - ATLAS service check failed for host sandbox.hortonworks.com with error Execution of 'curl -k -s -o /dev/null -w "%{http_code}" http://sandbox.hortonworks.com:21000/' returned 7. 000
Traceback (most recent call last):
  File "/var/lib/ambari-agent/cache/common-services/ATLAS/0.1.0.2.3/package/scripts/service_check.py", line 52, in <module>
    AtlasServiceCheck().execute()
  File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py", line 314, in execute
    method(env)
  File "/var/lib/ambari-agent/cache/common-services/ATLAS/0.1.0.2.3/package/scripts/service_check.py", line 48, in service_check
    raise Fail("All instances of ATLAS METADATA SERVER are down.")
resource_management.core.exceptions.Fail: All instances of ATLAS METADATA SERVER are down.
 stdout:
2017-08-16 05:21:14,132 - Stack Feature Version Info: stack_version=2.6, version=None, current_cluster_version=2.6.0.3-8 -> 2.6
2017-08-16 05:21:14,136 - Using hadoop conf dir: /usr/hdp/current/hadoop-client/conf
2017-08-16 05:21:14,158 - Execute['curl -k -s -o /dev/null -w "%{http_code}" http://sandbox.hortonworks.com:21000/'] {'tries': 5, 'user': 'ambari-qa', 'try_sleep': 10}
2017-08-16 05:21:14,297 - Retrying after 10 seconds. Reason: Execution of 'curl -k -s -o /dev/null -w "%{http_code}" http://sandbox.hortonworks.com:21000/' returned 7. 000
2017-08-16 05:21:24,399 - Retrying after 10 seconds. Reason: Execution of 'curl -k -s -o /dev/null -w "%{http_code}" http://sandbox.hortonworks.com:21000/' returned 7. 000
2017-08-16 05:21:34,552 - Retrying after 10 seconds. Reason: Execution of 'curl -k -s -o /dev/null -w "%{http_code}" http://sandbox.hortonworks.com:21000/' returned 7. 000
2017-08-16 05:21:44,647 - Retrying after 10 seconds. Reason: Execution of 'curl -k -s -o /dev/null -w "%{http_code}" http://sandbox.hortonworks.com:21000/' returned 7. 000
2017-08-16 05:21:54,756 - ATLAS service check failed for host sandbox.hortonworks.com with error Execution of 'curl -k -s -o /dev/null -w "%{http_code}" http://sandbox.hortonworks.com:21000/' returned 7. 000

Command failed after 1 tries