在帮一个朋友的数据库导出的时候遇到错误，如下：
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[root@iZ252affh68Z ~]# innobackupex --defaults-file=/etc/my.cnf --host=10.51.xxx.xxx --user=xtrabk --password=xxxxxx --stream=tar /tmp | gzip > /mnt/backup/mysql_full/xtra_fullbak_2017-01-20.tar.gz
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170120 18:21:48 innobackupex: Starting the backup operation
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IMPORTANT: Please check that the backup run completes successfully.
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At the end of a successful backup run innobackupex
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prints "completed OK!".
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170120 18:21:48 version_check Connecting to MySQL server with DSN 'dbi:mysql:;mysql_read_default_group=xtrabackup;host=10.51.xxx.xxx;port=3306;mysql_socket=/mnt/mysql/mysql.sock' as 'xtrabk' (using password: YES).
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170120 18:21:48 version_check Connected to MySQL server
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170120 18:21:48 version_check Executing a version check against the server...
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170120 18:21:51 version_check Done.
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170120 18:21:51 Connecting to MySQL server host: 10.51.xxx.xxx, user: xtrabk, password: set, port: 3306, socket: /mnt/mysql/mysql.sock
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Using server version 5.7.12-log
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Error: failed to execute query
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SHOW ENGINE INNODB STATUS: Access denied; you need (at least one of) the PROCESS privilege(s) for th
根据提示是缺少PROCESS权限，赋予后问题解决
grant process on *.* to xtrabk@'10.51.xxx.xxx';
