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Datanode is not connected to the Namenode cloudera

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Datanode is not connected to the Namenode cloudera

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I want to acces cloudera from a distant machine via Talend for big data. In order to do that i changed the ip of the host in cloudera by editing the file /etc/hosts and /etc/sysconfig/network. I can acces cloudera from Talend. However the problem is that my datanode and Namenode seems to be not connected. When i check the log details of my Datanode i get the following errors :

 

Block pool BP-1183376682-127.0.0.1-1433878467265 (Datanode Uuid null) service to quickstart.cloudera/127.0.0.1:8022 beginning handshake with NN

Initialization failed for Block pool BP-1183376682-127.0.0.1-1433878467265 (Datanode Uuid null) service to quickstart.cloudera/127.0.0.1:8022 Datanode denied communication with namenode because the host is not in the include-list: DatanodeRegistration(127.0.0.1, datanodeUuid=5802ab81-2c28-4beb-b155-cac31567d23a, infoPort=50075, ipcPort=50020, storageInfo=lv=-56;cid=CID-83500942-6c65-4ecd-a0c2-a448be86bcb0;nsid=975591446;c=0)

 

the datanode still uses the wrong ip adress ( 127.0.0.1 ) even though i made the modifications in core-site.xml, hdfs-site.xml and mapred-site.xml by editing the previous ip adress by the new one.

I followed the steps given in this tutorial to do so : https://www.youtube.com/watch?v=fSGpYHjGIRY

 

How can i fix this error ?

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