Establishing SSH connectivity between 2 servers without being asked for password
To be able to execute remote shell commands (ssh, rsh) between 2 trusted servers without being prompted to introduce password each time you have to do the following:
1. Create a key pair on the server from which ssh or scp commads are executed.
ssh-keygen –t rsa
2. Please set empty password.
3. Then you should name the public key more conveniently.
cp $HOME/.ssh/id_rsa.pub $HOME/server1.pub
4. After that copy the public key to the remote server machines:
scp $HOME/server1.pub user@server2:
5. Eventually SSH to these machines and configure the public key as an authorized key.
ssh user@server2
cat $HOME/server1.pub >> $HOME/.ssh/authorized_keys
6. To test the connectivity, simply SSH from server1 machine to server2 machine.
ssh user@server2
The connection should succeed and you should not be asked for a password.
