AMBARI-20460. ambari-server restart --debug giving "su: cannot open session: Permission denied" (aonishuk)

ambari-server/conf/unix/ambari.properties

@@ -97,7 +97,7 @@ client.threadpool.size.max=25
 agent.threadpool.size.max=25
 
 # linux open-file limit
-ulimit.open.files=10000
+ulimit.open.files=65536
 
 # Server HTTP settings
 server.http.session.inactive_timeout=1800

ambari-server/src/main/python/ambari_server_main.py

@@ -122,7 +122,7 @@ AMBARI_SERVER_STARTED_SUCCESS_MSG = "Ambari Server has started successfully"
 
 # linux open-file limit
 ULIMIT_OPEN_FILES_KEY = 'ulimit.open.files'
-ULIMIT_OPEN_FILES_DEFAULT = 10000
+ULIMIT_OPEN_FILES_DEFAULT = 65536
 
 AMBARI_ENV_FILE = AmbariPath.get("/var/lib/ambari-server/ambari-env.sh")