mysql二进制安装

Posted 2020-10-04

1、添加用户

useradd  mysql -s  /sbin/nologin -M

2、下载解压软件

rz -y

tar xf mysql-5.5.32-linux2.6-x86_64.tar.gz

mv mysql-5.5.32-linux2.6-x86_64 /application/mysql-5.5.32

ln -s /application/mysql-5.5.32/ /application/mysql/

3、初始化数据库

/application/mysql/scripts/mysql_install_db --basedir=/application/mysql/ --datadir=/application/mysql/data/ --user=mysql

4、授权MySQL管理数据库文件

chown -R mysql.mysql /application/mysql/

5、生成MySQL配置文件

cp /application/mysql/support-files/my-small.cnf /etc/my.cnf

6、配置启动MySQL

sed -i ‘s#/usr/local/mysql#/application/mysql#g‘ /application/mysql/bin/mysqld_safe

/application/mysql/bin/mysqld_safe &  后台开启mysqld服务进程

lsof -i :3306  进程已开启

7、配置环境变量

 echo $PATH

 cp /application/mysql/bin/* /usr/local/sbin/

 which mysql

8、配置传统方式启动mysqld服务

cp /application/mysql/support-files/mysql.server /etc/init.d/mysqld

sed -i ‘s#/usr/local/mysql#/application/mysql#g‘ /etc/init.d/mysqld

chmod +x /etc/init.d/mysqld

killall mysqld

lsof -i :3306  发现进程已关闭

/etc/init.d/mysqld start

lsof -i :3306  发现进程已开启

chkconfig mysqld on  设置开机自启动

chkconfig --list mysqld  查看开机自启动

安全优化

1、设置mysql密码

mysqladmin -uroot password "123456"

mysql -uroot -p123456  用密码登录mysql

mysql -uroot -p  进入交互式密码登录

更改密码

mysqladmin -uroot -p123456 password "wuyike"

2、安全优化

删除test数据库

drop database test;

删除无用用户

select user,host from mysql.user;

drop user ‘用户‘@‘主机名‘   用户大写，特殊字符删不了，用delete（delete from mysql.user where user="root"and host="A";）

drop user ‘root‘@‘wuyike‘;

drop user ‘root‘@‘::1‘;

drop user ‘‘@‘wuyike‘;

剩下如下用户:

mysql> select user,host from mysql.user;

+------+-----------+

| user | host      |

+------+-----------+

| root | 127.0.0.1 |

| root | localhost |

+------+-----------+

如果误删：

grant all on *.* to ‘root‘@localhost identified by ‘123456‘with grant option;flush privileges;

3、简单命令

帮助：help drop;

查库：show databases;================>ls

切库：use mysql或别的库名; ==========>cd

查表：show tales;

查看用户列表：select user,host from mysql.user;

查看当前用户：select user();=========>whoami

查看当前所在库：select database(); =======>pwd

删除数据库：drop database 库名；

删除用户：drop user ‘用户‘@‘主机‘;

http://blog.csdn.net/wh211212/article/details/52856240