Xubuntu learning Summary (2) Failure to install hadoop1.04 ssh password-free Login

Xubuntu learning Summary (2) Installation of hadoop1.04 ssh password-free login failure 1. install ssh sudo apt-get install ssh. 2. install rsync sudo apt-get install rsync 3. configure ssh password-free logon to www.2cto.com ssh-keygen-t rsa-p'-f ~ /. Ssh/id_rsa cat ~ /. Ssh/id_rsa.pub> ~ /. Ssh/anthorized_keys (Note: This configuration is configured under the current user and must be installed under this user when you install hadoop1.04; otherwise, your password-free Logon Settings are invalid (for example: when you install hadoop in the/usr folder, you must enter the password three times when starting the hadoop service )). Verify that ssh is successful: ssh localhost