ssh-keygen

ssh-copy-id -i ~/.ssh/id_rsa.pub root@xxx.xxx.xxx.xxx

2.验证ssh(出现日期则成功)

ssh xxx.xxx.xxx.xxx date

2.开始Xtrabackup远程备份

innobackupex --stream=tar ./ | ssh mysql@xxx.xxx.xxx.xxx \ "cat - > /data/date +"%Y%m%d_%H%M%S".tar"