Setting up of cluster using ssh - Scripts that help in minimising the cluster
setup efforts
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Key: HDFS-1895
URL: https://issues.apache.org/jira/browse/HDFS-1895
Project: Hadoop HDFS
Issue Type: Improvement
Components: scripts
Reporter: ramkrishna.s.vasudevan
Priority: Minor
Sometimes when we have a large number of clusters we may have to specify the
password of the different machines that we are using as slaves (datanodes).
If the cluster is very huge we may have to repeat this everytime.
So we would to suggest a way to avoid this
1. Generate a SSH key from the name node machine
2. Read the entries from the conf/slaves file, for every entry add the key
generated in step 1 to a file of slave machine.
3. Repeat the same for master file also.
when you execute step 1 it will prompt for the password. This is only for the
first time.
After that whenever you need to start the cluster then password need not be
specified.
This scenario is valid when we are sure of the cluster that we will be
maintaining and we are aware of the credentials of the machine.
This will help the cluster administrator.
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