ssh localhost during hadoop setup

In apache site, if you simply follow..below in ubuntu it didn't work..


https://hadoop.apache.org/docs/current2/hadoop-project-dist/hadoop-common/SingleCluster.html

Setup passphraseless ssh

Now check that you can ssh to the localhost without a passphrase:
  $ ssh localhost
If you cannot ssh to localhost without a passphrase, execute the following commands:
  $ ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa
  $ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
  $ chmod 0600 ~/.ssh/authorized_keys


So check for 2 things..


a) U have a SSH server installed..do it first.


b) Instead of using dsa use rsa






  $ ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa
  $ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
  $ chmod 0600 ~/.ssh/authorized_keys


















































Comments









  1. BinayakNovember 14, 2016 at 1:52 AM
    Noted...one friend was following the steps but it didn't work.
    Look at the error msgs..its always leading.
    The friend made chmod +777 to authorized_keys and hence the ssh agent was complaining on ssh-add as too generic permissions.
    Check permissions of files and directory id_rsa.
    chmod 600  ~/.ssh/authorized_keys
    ReplyDelete











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