备份
xtrabackup --default-file=/etc/my.cnf --user=root --password=123 --host=10.0.0.20 --backup --target-dir=/xtrabackup/full/
模拟当即删除
pkill
恢复
xtrabackup --prepare --target-dir=/xtrabackup/full/
xtrabackup --copy-back --target-dir=/xtrabackup/full/