Incorrect configuration: namenode address dfs.name

问题:

I am getting this error when I try and boot up a DataNode. From what I have read, the RPC paramters are only used for a HA configuration, which I am not setting up (I think).

2014-05-18 18:05:00,589 INFO  [main] impl.MetricsSystemImpl (MetricsSystemImpl.java:shutdown(572)) - DataNode metrics system shutdown complete.
2014-05-18 18:05:00,589 INFO  [main] datanode.DataNode (DataNode.java:shutdown(1313)) -     Shutdown complete.
2014-05-18 18:05:00,614 FATAL [main] datanode.DataNode (DataNode.java:secureMain(1989)) - Exception in secureMain
java.io.IOException: Incorrect configuration: namenode address dfs.namenode.servicerpc-address or dfs.namenode.rpc-address is not configured.
at org.apache.hadoop.hdfs.DFSUtil.getNNServiceRpcAddresses(DFSUtil.java:840)
at   org.apache.hadoop.hdfs.server.datanode.BlockPoolManager.refreshNamenodes(BlockPoolManager.java:151)
at org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:745)
at org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:278)

My files look like:

[root@datanode1 conf.cluster]# cat core-site.xml

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<configuration>

<property>
 <name>fs.defaultFS</name>
 <value>hdfs://namenode:8020</value>
</property>

</configuration>

cat hdfs-site.xml

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<configuration>
<property>
 <name>dfs.datanode.data.dir</name>
 <value>/hdfs/data</value>
</property>
<property>
 <name>dfs.permissions.superusergroup</name>
 <value>hadoop</value>
</property>
</configuration>

I am using the latest CDH5 distro.

Installed Packages
Name        : hadoop-hdfs-datanode
Arch        : x86_64
Version     : 2.3.0+cdh5.0.1+567
Release     : 1.cdh5.0.1.p0.46.el6

Any helpful advice on how to get past this?

EDIT: Just use Cloudera manager.

回答1:

I too was facing the same issue and finally found that there was a space in fs.default.name value. truncating the space fixed the issue. The above core-site.xml doesn't seem to have space so the issue may be different from what i had. my 2 cents

回答2:

These steps solved the problem for me:

• export HADOOP_CONF_DIR = $HADOOP_HOME/etc/hadoop
• echo $HADOOP_CONF_DIR
• hdfs namenode -format
• hdfs getconf -namenodes
• ./start-dfs.sh

回答3:

check the core-site.xml under $HADOOP_INSTALL/etc/hadoop dir. Verify that the property fs.default.name is configured correctly

回答4:

I had the exact same issue. I found a resolution by checking the environment on the Data Node:

$ sudo update-alternatives --install /etc/hadoop/conf hadoop-conf /etc/hadoop/conf.my_cluster 50
$ sudo update-alternatives --set hadoop-conf /etc/hadoop/conf.my_cluster

Make sure that the alternatives are set correctly on the Data Nodes.

回答5:

Obviously,your core-site.xml has configure error.

<property>
 <name>fs.defaultFS</name>
 <value>hdfs://namenode:8020</value>
</property>

Your <name>fs.defaultFS</name> setting as <value>hdfs://namenode:8020</value>,but your machine hostname is datanode1.So you just need change namenode to datanode1 will be OK.

回答6:

Configuring the full host name in core-site.xml, masters and slaves solved the issue for me.

Old: node1 (failed)

New: node1.krish.com (Succeed)

回答7:

creating dfs.name.dir and dfs.data.dir directories and configuring full hostname in core-site.xml, masters & slaves is solved my issue

回答8:

In my situation, I fixed by change /etc/hosts config to lower case.

回答9:

in my case, I have wrongly set HADOOP_CONF_DIR to an other Hadoop installation.

Add to hadoop-env.sh:

export HADOOP_CONF_DIR=/usr/local/hadoop/etc/hadoop/

回答10:

This type of problem mainly arises is there is a space in the value or name of the property in any one of the following files- core-site.xml, hdfs-site.xml, mapred-site.xml, yarn-site.xml

just make sure you did not put any spaces or (changed the line) in between the opening and closing name and value tags.

Code:

 <property> 
<name>dfs.name.dir</name> <value>file:///home/hadoop/hadoop_tmp/hdfs/namenode</value> 
<final>true</final> 
</property>

回答11:

I was facing the same issue, formatting HDFS solved my issue. Don't format HDFS if you have important meta data.
Command for formatting HDFS: hdfs namenode -format

When namenode was not working

After formatting HDFS

回答12:

Check your '/etc/hosts' file:
There must be a line like below: (if not, so add that)
namenode 127.0.0.1
Replace 127.0.01 with your namenode IP.