mysql 修改 datadir 记录

系统：linux Rhel 5.9 x64

mysql 安装了客户端和服务端

rpm -ivh  MySQL-server-advanced-5.6.21-1.rhel5.x86_64.rpm

 rpm -ivh MySQL-client-advanced-5.6.21-1.rhel5.x86_64.rpm

mysql 的默认存储路径为 /var/lib/mysql ，修改后为 /data/mysql

1. 关闭服务

   service mysql stop

2. 复制mysql 数据文件到新的目录

   cp -rp /var/lib/mysql  /data

   查看原目录的权限，若是新目录的不一致，修改一致，参考

   chown mysql:mysql /data/mysql

3. 编辑my.cnf

   [client]
   socket=/data/mysql/mysql.sock
   default-character-set=utf8
   [mysql]
   default-character-set=utf8
   [mysqld]
   datadir=/data/mysql
   socket=/data/mysql/mysql.sock
   character-set-server=utf8
   lower_case_table_names=1
   [mysqld_safe]
   log-error=/var/log/mysqld.log

   参考：`查询MySQL默认配置加下顺序

   /usr/bin/mysql --verbose --help | grep -A 1 'Default options'

   `

4. 启动 mysql

   service mysql start

   若是有错误，查看错误日志解决 /var/log/mysqld.log

   其它参考：How to Change default MySQL Data Directory in Linux