browse file system link - hadoop - localhost link - hadoop

Question

I am using Hadoop 2.2 on Ubuntu.
I am able to load this link in my browser.
http://[my_ip]:50070/dfshealth.jsp
From there, when I click the "Browse the filesystem" link, I am sent to
http://localhost:50075/browseDirectory.jsp?namenodeInfoPort=50070&dir=/&nnaddr=127.0.0.1:9000
while here I think I want my_ip instead of localhost and 127.0.0.1
Also, if I type manually
http://my_ip:50075/browseDirectory.jsp?namenodeInfoPort=50070&dir=/&nnaddr=my_ip:9000
it still does not work.
The my_ip is an external/global IP throughout my whole question text.
How can I get this working? All I want is to be able to browse my HDFS filesystem from the browser.
core-site.xml
<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://localhost:9000</value>
<!-- <value>hdfs://my_ip:9000</value> -->
</property>
<!--
fs.default.name
hdfs://localhost:9000
-->
</configuration>
hdfs-site.xml
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:/var/lib/hadoop/hdfs/namenode</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:/var/lib/hadoop/hdfs/datanode</value>
</property>
<!--
dfs.replication
1
dfs.namenode.name.dir
file:/var/lib/hadoop/hdfs/namenode
dfs.datanode.data.dir
file:/var/lib/hadoop/hdfs/datanode
-->
<property>
<name>dfs.http.address</name>
<value>my_ip:50070</value>
</property>
<property>
<name>dfs.datanode.http.address</name>
<value>my_ip:50075</value>
</property>
</configuration>
/etc/hosts
127.0.0.1 localhost test02
# 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
EDIT ERROR:
HTTP ERROR 500
Problem accessing /nn_browsedfscontent.jsp. Reason:
Cannot issue delegation token. Name node is in safe mode.
The reported blocks 21 has reached the threshold 0.9990 of total blocks 21. The number of live datanodes 1 has reached the minimum number 0. Safe mode will be turned off automatically in 2 seconds.
Caused by:
org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot issue delegation token. Name node is in safe mode.
The reported blocks 21 has reached the threshold 0.9990 of total blocks 21. The number of live datanodes 1 has reached the minimum number 0. Safe mode will be turned off automatically in 2 seconds.
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getDelegationToken(FSNamesystem.java:5887)
at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getDelegationToken(NameNodeRpcServer.java:447)
at org.apache.hadoop.hdfs.server.namenode.NamenodeJspHelper$1.run(NamenodeJspHelper.java:623)
at org.apache.hadoop.hdfs.server.namenode.NamenodeJspHelper$1.run(NamenodeJspHelper.java:620)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)

Answer 1

In your hdfs-site.xml, replace
<property>
<name>dfs.http.address</name>
<value>my_ip:50070</value>
</property>
<property>
<name>dfs.datanode.http.address</name>
<value>my_ip:50075</value>
</property>
by
<property>
<name>dfs.namenode.http-address</name>
<value>localhost:50070</value>
</property>
<property>
<name>dfs.datanode.http.address</name>
<value>localhost:50075</value>
</property>
But usually, in pseudo-ditributed mode it's not necessary to specify those properties.
Reboot your cluster after changing the properties.