怎么在Linux中修改MySQL數據庫數據文件路徑

今天就跟大家聊聊有關怎么在Linux中修改MySQL數據庫數據文件路徑，可能很多人都不太了解，為了讓大家更加了解，小編給大家總結了以下內容，希望大家根據這篇文章可以有所收獲。

步驟：

1、創建目標路徑

mkdir -p /home/mysql_data

2、關閉MySQL

systemctl stop mysqld

3、復制數據文件

cp -arp /var/lib/mysql /home/mysql_data

4、修改配置文件/etc/my.cnf

將datadir和socket中的原路徑修改為目標路徑

datadir=/home/mysql_data/mysql
socket=/home/mysql_data/mysql/mysql.sock

5、啟動MySQL服務

systemctl start mysqld

NOTE:

1、報錯如下：

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

解決：

執行命令：

setenforce 1

再重新啟動

2、報錯如下：

Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'

解決：

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

看完上述內容，你們對怎么在Linux中修改MySQL數據庫數據文件路徑有進一步的了解嗎？如果還想了解更多知識或者相關內容，請關注億速云行業資訊頻道，感謝大家的支持。