Lo primero es generar un par de claves pública-privada para el acceso SSH en el nodo administrador:
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# ssh-keygen -t rsa -N '' -f .ssh/id_rsa Generating public/private rsa key pair. Your identification has been saved in .ssh/id_rsa Your public key has been saved in .ssh/id_rsa.pub |
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# ssh-copy-id -f -i .ssh/id_rsa.pub root@hadoop-master1 /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: ".ssh/id_rsa.pub" root@hadoop-master1's password: Number of key(s) added: 1 Now try logging into the machine, with: "ssh 'root@hadoop-master1'" and check to make sure that only the key(s) you wanted were added. |
Y comprobamos que el acceso ssh mediante clave funciona:
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# ssh root@hadoop-master1 |