Rsync + SSH - no password

Install rsync

For Ubuntu or Debian
# apt-get install rsync

For SUSE or Fedora# yum install rsync

rsync without prompting for password:

Assuming the file server is ServerF and backup server is ServerB

Genarate the public key in ServerF

$ ssh-keygen

$ Enter passphrase (empty for no passphrase):

$ Enter same passphrase again:

The public key will be generated and stored in

~/.ssh/id_rsa.pub

Copy public key to remote host

ssh-copy-id -i ~/.ssh/id_rsa.pub 192.168.1.100

Or

ssh-copy-id -i ~/.ssh/id_rsa.pub "root@192.168.1.100" -p123

Or

Open id_rsa.pub, copy the content

Login to ServerB using the same user in the rsync command

In ServerB, append the contents to ~/.ssh/authorized_keys. Create the file if not exist. Make sure the file mode is 700.

Is it possible to run ssh-copy-id on port other than 22?
Rsync with SSH without prompting for password