ssh无密码登陆

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生成密钥并复制

ssh-keygen -t rsa -P ''
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
chmod 600 ~/.ssh/authorized_keys

修改SSH配置文件

更改/etc/ssh/sshd_config中的

RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile	.ssh/authorized_keys

将KEY拷贝到DATANODE机器并复制

scp ~/.ssh/id_rsa.pub xxx@192.168.2.110:~/.ssh/
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
chmod 600 ~/.ssh/authorized_keys 再以和NAMENODE机器中的同样的方式修改DATANODE机器中的SSHD_CONFIG

转载于:https://my.oschina.net/u/1383439/blog/295036