Shulou(Shulou.com)06/03 Report--

The Hadoop2.7.2 cluster secondarynamenode started successfully, but the slave node datenode started unsuccessfully.

The slave node reports an error in the datanote log under logs: java.net.BindException: Port in use: localhost:0, and hint: the requested address cannot be specified.

Modify / etc/hosts file to add the original default configuration (in this operation, the hosts files of all nodes in the cluster have been modified, and the salve node has not been tested separately).

Vi / etc/hosts

Add the following to the last line:

127.0.0.1 localhost.localdomain localhost

Save exit.

Stop the Hadoop cluster: sbin/stop-all.sh

Start the cluster: sbin/start-dfs.sh

Successfully started the slave node

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