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/lib64/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/data
mkdir -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/mysql
basedir=
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$ mysql
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 1
Server 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 its
affiliates. Other names may be trademarks of their respective
owners.
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/lib64/mysql/plugin/ |
| slave_load_tmpdir | /tmp |
| tmpdir | /tmp |
+-----------------------------------------+----------------------------+
11 rows in set (0.00 sec)