First check "hbase-hduser-master-ubuntu.log" file from logs folder of your hbase installed path
if you are getting following error
2014-09-07 20:22:24,505 ERROR [main] master.HMasterCommandLine: Master exiting
java.lang.RuntimeException: HMaster Aborted
at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:194)
at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:135)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126)
at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:2794)
compare core-site.xml of Hadoop with hbase-site.xml of hbase. hdfs URL should be same in both file
core-site.xml
<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://192.168.203.130:9000</value>
</property>
</configuration>
hbase-site.xml
<property>
<name>hbase.rootdir</name>
<!-- <value>hdfs://localhost:9000/hbase</value> -->
<value>hdfs://192.168.203.130:9000/hbase</value>
<description>The directory shared by RegionServers.
</description>
</property>