ERROR 1 (HY000): Can't create/write to file '/data
使用非DBA用户进行load data 操作，发现报错。
MariaDB [temp_archive]> select * from t1 into outfile '/data/test.sql';
ERROR 1 (HY000): Can't create/write to file '/data/test.sql' (Errcode: 13 "Permission denied")
提示报错。
报错原因权限不足。
分析：
权限有系统权限和数据库权限。
/data 目录权限 chown -R mysql:mysql /data/
实验1：操作系统权限
创建hy用户，使用root账户操作，文件保存目录/data/：
useradd -u 1100 hy
password hy
su hy
[hy@XHY005116 /]$ mysql
MariaDB [(none)]> use test
Database changed
MariaDB [test]> select * from t111 into outfile '/data/t111.sql';
Query OK, 1 row affected (0.00 sec)
MariaDB [test]> create table t112 like t111;
Query OK, 0 rows affected (0.08 sec)
MariaDB [test]> load data infile '/data/t111.sql' into table t112;
Query OK, 1 row affected (0.02 sec)
Records: 1 Deleted: 0 Skipped: 0 Warnings: 0
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文件保存目录/
MariaDB [test]> select * from t111 into outfile '/t111.sql';
ERROR 1 (HY000): Can't create/write to file '/t111.sql' (Errcode: 13 "Permission denied")
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报错：权限不足，此处可以分析出系统权限不足，导致报错。
实验2：
hy用户登录ya，ya账户读写权限,文件保存目录 /data/。
MariaDB [test]> select * from t100 into outfile '/data/t100.sql';
ERROR 1045 (28000): Access denied for user 'ya'@'192.168.%' (using password: YES)
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使用root用户导出的文件，使用ya用户导入
MariaDB [test]> load data infile '/data/t100.sql' into table t101;
ERROR 1045 (28000): Access denied for user 'ya'@'192.168.%' (using password: YES)
均报错：判断是数据库权限问题。
尝试授权file权限。
MariaDB [(none)]> grant file on *.* to 'ya'@'192.168.%';
MariaDB [(none)]> flush privileges;
[hy@XHY005116 data]$ mysql -uya -p123456 -h192.168.5.116
MariaDB [test]> select * from t101 into outfile '/data/t101.sql';
MariaDB [test]> load data infile '/data/t101.sql' into table t102;
Query OK, 6 rows affected (0.02 sec)
成功：
文件保存目录：/
MariaDB [test]> select * from t101 into outfile '/t101.sql';
ERROR 1 (HY000): Can't create/write to file '/t101.sql' (Errcode: 13 "Permission denied
报错：权限问题。
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结合：上两个实验可以得出“(Errcode: 13 "Permission denied” 错误是和操作系统目录有关。
对应mysql的权限