namenode can not started in Multi-node cluster in ec2 - amazon-ec2

Question

so i follow this guide to setup mu multi-node cluster:http://disi.unitn.it/~lissandrini/notes/installing-hadoop-on-ubuntu-14.html
when i finish all setup and run start-dfs.sh, after that, when i run jps, only have SecondaryNameNode started.
here is my core-site.xml
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://mynode1/</value>
<description>NameNode URI</description>
</property>
</configuration>
and my hdfs.xml
<configuration>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:///usr/local/hadoop/data/datanode</value>
<description>DataNode directory</description>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:///usr/local/hadoop/data/namenode</value>
<description>NameNode directory for namespace and transaction logs storage.</description>
</property>
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
<property>
<name>dfs.permissions</name>
<value>false</value>
</property>
<property>
<name>dfs.datanode.use.datanode.hostname</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.ip-hostname-check</name>
<value>false</value>
</property>
</configuration>
and my /etc/hosts
127.0.0.1 localhost
54.225.196.4 mynode1
54.80.40.198 mynode2
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
This is my namenode log
2014-10-26 01:16:57,756 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = ip-10-169-41-62.ec2.internal/10.169.41.62
STARTUP_MSG: args = []
STARTUP_MSG: version = 2.4.1
The thing i notice is if i change everything in the setting from mynode1 to localhost, then seem namenode can get started, but datanode in node2 will not response to master, which i cant upload a file to hdfs

Answer 1

I recommend you to use this tutorial here. I used it and everything was working fine, I had just changing the port number from 8020 t0 9000, and 8021 to 9001.
The core and hdfs files are not correct. I cannot understand how many nodes you are deploying. So, change your tutorial as I refereed you in the above link, and if you have any issue just let me know.