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今天就跟大家聊聊有关怎么在 Linux 中修改 MySQL 数据库数据文件路径,可能很多人都不太了解,为了让大家更加了解,丸趣 TV 小编给大家总结了以下内容,希望大家根据这篇文章可以有所收获。
步骤:
1、创建目标路径
mkdir -p /home/mysql_data
2、关闭 MySQL
systemctl stop mysqld
3、复制数据文件
cp -arp /var/lib/mysql /home/mysql_data
4、修改配置文件 /etc/my.cnf
将 datadir 和 socket 中的原路径修改为目标路径
datadir=/home/mysql_data/mysql
socket=/home/mysql_data/mysql/mysql.sock
5、启动 MySQL 服务
systemctl start mysqld
NOTE:
1、报错如下:
2019-12-22T08:32:42.430564Z 0 [ERROR] InnoDB: Operating system error number 13 in a file operation.
2019-12-22T08:32:42.430599Z 0 [ERROR] InnoDB: The error means mysqld does not have the access rights to the directory.
2019-12-22T08:32:42.430616Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2019-12-22T08:32:42.430898Z 0 [ERROR] InnoDB: The innodb_temporary data file ibtmp1 must be writable
2019-12-22T08:32:42.430923Z 0 [ERROR] InnoDB: The innodb_temporary data file ibtmp1 must be writable
2019-12-22T08:32:42.430936Z 0 [ERROR] InnoDB: Could not create the shared innodb_temporary.
2019-12-22T08:32:42.430952Z 0 [ERROR] InnoDB: Plugin initialization aborted with error Generic error
2019-12-22T08:32:43.038973Z 0 [ERROR] InnoDB: Operating system error number 13 in a file operation.
2019-12-22T08:32:43.039021Z 0 [ERROR] InnoDB: The error means mysqld does not have the access rights to the directory.
2019-12-22T08:32:43.039037Z 0 [ERROR] Plugin InnoDB init function returned error.
2019-12-22T08:32:43.039046Z 0 [ERROR] Plugin InnoDB registration as a STORAGE ENGINE failed.
2019-12-22T08:32:43.039056Z 0 [ERROR] Failed to initialize builtin plugins.
2019-12-22T08:32:43.039063Z 0 [ERROR] Aborting
解决:
执行命令:
setenforce 1
再重新启动
2、报错如下:
Can t connect to local MySQL server through socket /var/lib/mysql/mysql.sock
解决:
修改配置文件 my.cnf, 添加或修改如下配置:
[client]
socket = /home/mysql_data/mysql/mysql.sock
看完上述内容,你们对怎么在 Linux 中修改 MySQL 数据库数据文件路径有进一步的了解吗?如果还想了解更多知识或者相关内容,请关注丸趣 TV 行业资讯频道,感谢大家的支持。
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