1. Centos6.5 安装MySQL 5.7

1. ⾸先检查系统⾥是否存在mysql库⽂件

rpm -qa | grep mysql 如果存在mysql-lib则删除： rpm -e --nodeps mysql-libs

2. 解压缩mysql-bundle包

tar -xvf mysql-5.7.23-1.el6.x86_64.rpm-bundle.tar 按顺序安装： rpm -ivh mysql-community-common-5.7.16-1.el6.x86_64.rpm rpm -ivh mysql-community-libs-5.7.16-1.el6.x86_64.rpm rpm -ivh mysql-community-libs-compat-5.7.16-1.el6.x86_64.rpm rpm -ivh mysql-community-client-5.7.16-1.el6.x86_64.rpm rpm -ivh mysql-community-server-5.7.16-1.el6.x86_64.rpm 安装完后，使⽤命令service mysqld start启动MySQL服务。

3. 使⽤以下命令： grep ‘temporary password’ /var/log/mysqld.log 取得初始密码

修改密码： mysql_secure_installation

4. 修改字符集为UTF-8：

vim /etc/my.cnf 在[mysqld]部分添加： character-set-server=utf8 在⽂件末尾新增[client]段，并 在[client]段添加： default-character-set=utf8

5. 修改好之后重启mysqld服务： service mysqld restart 查看修改结果：

mysql> show variables like "%character%"; +--------------------------+----------------------------+ | Variable_name | Value | +--------------------------+----------------------------+ | character_set_client | utf8 | | character_set_connection | utf8 | | character_set_database | utf8 | | character_set_filesystem | binary | | character_set_results | utf8 | | character_set_server | utf8 | | character_set_system | utf8 | | character_sets_dir | /usr/share/mysql/charsets/ | +--------------------------+----------------------------+ 8 rows in set (0.00 sec)