修改mysql数据存储的地址

修改步骤如下

1,修改前为默认路径/var/lib/mysql/，计划修改为/data/mysql/data

mysql> show variables like '%dir%';+-----------------------------------------+----------------------------+| Variable_name | Value |+-----------------------------------------+----------------------------+| basedir | /usr || binlog_direct_non_transactional_updates | OFF || character_sets_dir | /usr/share/mysql/charsets/ || datadir | /var/lib/mysql/ || innodb_data_home_dir | || innodb_log_group_home_dir | ./ || innodb_max_dirty_pages_pct | 75 || lc_messages_dir | /usr/share/mysql/ || plugin_dir | /usr/lib/mysql/plugin/ || slave_load_tmpdir | /tmp || tmpdir | /tmp |+-----------------------------------------+----------------------------+11 rows in set (0.00 sec)

2，关闭mysql服务

service mysql stop

3，新建目录，修改权限并cp相关文件到目标目录

新的数据存储路径为/data/mysql/datamkdir -p /data/mysql/data更改新路径权限宿主chown mysql:mysql /data/mysql/data将原数据全部拷贝到新路径cp -a /var/lib/mysql/* /data/mysql/data/

4,修改配置文件

[root@stmysql1 lib]# vi /etc/rc.d/init.d/mysqlbasedir=datadir=/data/mysql/data

5，启动mysql

service mysql start

6，修改后的地址如下，已修改成功

-bash-3.2$ mysqlWelcome to the MySQL monitor. Commands end with ; or /g.Your MySQL connection id is 1Server version: 5.5.33 MySQL Community Server (GPL)Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type 'help;' or '/h' for help. Type '/c' to clear the current input statement.mysql> show variables like '%dir%';+-----------------------------------------+----------------------------+| Variable_name | Value |+-----------------------------------------+----------------------------+| basedir | /usr || binlog_direct_non_transactional_updates | OFF || character_sets_dir | /usr/share/mysql/charsets/ || datadir | /data/mysql/data/ || innodb_data_home_dir | || innodb_log_group_home_dir | ./ || innodb_max_dirty_pages_pct | 75 || lc_messages_dir | /usr/share/mysql/ || plugin_dir | /usr/lib/mysql/plugin/ || slave_load_tmpdir | /tmp || tmpdir | /tmp |+-----------------------------------------+----------------------------+11 rows in set (0.00 sec)