https://community.cloudera.com/t5/Support-Questions/cloudera-manager-does-not-start/m-p/281381#M209342 <BLOCKQUOTE><HR /><a href="https://community.cloudera.com/t5/user/viewprofilepage/user-id/5016">@lwang</a>&nbsp;wrote:<BR /><P>Hi&nbsp;<a href="https://community.cloudera.com/t5/user/viewprofilepage/user-id/35725">@Nima</a>&nbsp;,</P><P>&nbsp;</P><P>Thanks for reaching out to community. Which documentation you used to install CM/CDH 6.3?</P><P>&nbsp;</P><P>Could you please share the Cloudera Manager server log for review? The log usually is located at: /var/log/cloudera-scm-server/cloudera-scm-server.log</P><P>&nbsp;</P><P>Also what does below command return on CM server?</P><P>service cloudera-scm-server status</P><P>&nbsp;</P><P>Thanks,</P><P>Li</P><HR /></BLOCKQUOTE><P>["Par Eden Space","Par Survivor Space"],"Name":"ParNew","ObjectName":"java.lang:type=GarbageCollector,name=ParNew"},{"name":"java.lang:type=GarbageCollector,name=ConcurrentMarkSweep","modelerType":"sun.management.GarbageCollectorImpl","LastGcInfo":{"GcThreadCount":2,"duration":258,"endTime":12127,"id":7,"memoryUsageAfterGc":[{"key":"Par Survivor Space","value":{"committed":524288,"init":524288,"max":8716288,"used":520272}},{"key":"Compressed Class Space","value":{"committed":5898240,"init":0,"max":1073741824,"used":5777584}},{"key":"Metaspace","value":{"committed":46530560,"init":0,"max":-1,"used":45955656}},{"key":"Code Cache","value":{"committed":12451840,"init":2555904,"max":251658240,"used":12311744}},{"key":"Par Eden Space","value":{"committed":4521984,"init":4521984,"max":69795840,"used":4521984}},{"key":"CMS Old Gen","value":{"committed":41168896,"init":11206656,"max":2060255232,"used":33743152}}],"memoryUsageBeforeGc":[{"key":"Par Survivor Space","value":{"committed":524288,"init":524288,"max":8716288,"used":508040}},{"key":"Compressed Class Space","value":{"committed":5898240,"init":0,"max":1073741824,"used":5777584}},{"key":"Metaspace","value":{"committed":46530560,"init":0,"max":-1,"used":45952496}},{"key":"Code Cache","value":{"committed":12386304,"init":2555904,"max":251658240,"used":12316736}},{"key":"Par Eden Space","value":{"committed":4521984,"init":4521984,"max":69795840,"used":2537304}},{"key":"CMS Old Gen","value":{"committed":41168896,"init":11206656,"max":2060255232,"used":30060840}}],"startTime":11869},"CollectionCount":7,"CollectionTime":118,"Valid":true,"MemoryPoolNames":["Par Eden Space","Par Survivor Space","CMS Old Gen"],"Name":"ConcurrentMarkSweep","ObjectName":"java.lang:type=GarbageCollector,name=ConcurrentMarkSweep"},{"name":"org.apache.logging.log4j2:type=5f8ed237,component=StatusLogger","modelerType":"org.apache.logging.log4j.core.jmx.StatusLoggerAdmin","ObjectName":"org.apache.logging.log4j2:type=5f8ed237,component=StatusLogger","Level":"WARN","StatusData":"[org.apache.logging.log4j.status.StatusData@21ed7e04]","StatusDataHistory":["2019-10-25 20:45:43,088 JmxPeriodicLogging-0 ERROR No log4j2 configuration file found. 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