THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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$ cd ambari-server-*
$ export AMBARI_PASSPHRASE="tmp"
$ cp /etc/ambari/ambari.properties etc/ambari-server/conf/
$ java -cp etc/ambari-server/conf/:lib/ambari-server/* org.apache.ambari.server.controller.AmbariServer
...