报错：
[root@mysql-s02 xtrabackup]# innobackupex --defautls-file=/usr/local/mysql/my.cnf --socket=/tmp/mysql.sock --copy-back /zabbixdb/2017-07-31_17-23-09
170731 17:57:38 innobackupex: Starting the copy-back operation
IMPORTANT: Please check that the copy-back run completes successfully.
At the end of a successful copy-back run innobackupex
prints "completed OK!".
innobackupex version 2.4.6 based on MySQL server 5.7.13 Linux (x86_64) (revision id: 8ec05b7)
Error: datadir must be specified.
解决方法：
手动输入命令
innobackupex --defautls-file=/usr/local/mysql/my.cnf --socket=/tmp/mysql.sock --copy-back /zabbixdb/2017-07-31_17-23-09
Error: datadir must be specified.
原文：http://linux10000.blog.51cto.com/6338282/1952446