在aws上设置hbase群集设置时，出现以下错误：

ubuntu@namenode:~$ hbase/bin/start-hbase.sh

Error: Could not find or load main class org.apache.hadoop.hbase.util. HBaseConfTool
Error: Could not find or load main class org.apache.hadoop.hbase.zookeeper.ZKServerTool
starting master, logging to /home/ubuntu/hbase/conf/logs/hbase-ubuntu-master-namenode.out
nice: /home/ubuntu/hbase/conf/bin/hbase: No such file or directory
cat: /home/ubuntu/hbase/conf/conf/regionservers: No such file or directory