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From Ravi Itha <ithar...@gmail.com>
Subject NameNode can't be started via Ambari Web UI --> Problematic Property is: fs.defaultFS
Date Tue, 16 Sep 2014 19:00:02 GMT
All,

My Ambari cluster setup is below:

Server 1: Ambari Server was installed
Server 2: Ambari Agent was installed
Server 3: Ambari Agent was installed

I create cluster with Server 2 and Server 3 and installed

Server 2 has NameNode
Server 3 has SNameNode & DataNode

When I try to start NameNode from UI, it does not start

Following are the errors:

1. safemode: Call From server_1/192.168.21.138 to server_1:8020 failed on
connection exception: java.net.ConnectException: Connection refused; For
more details see:  http://wiki.apache.org/hadoop/ConnectionRefused

In this case, the value of fs.defaultFS = hdfs://192.168.21.138  (This ip
is server_1's ip. I gave server_1 as the FQDN)

2. safemode: Call From server_1/192.168.21.138 to localhost:9000 failed on
connection exception: java.net.ConnectException: Connection refused; For
more details see:  http://wiki.apache.org/hadoop/ConnectionRefused

In this case, the value of fs.defaultFS = hdfs://localhost

Also, I cannot leave this field as blank.

So can someone, please help me what should be the right value to be set
here and I how I can fix the issue.

~Ravi Itha

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