mysql二進制安裝
1、添加用戶
useradd mysql -s /sbin/nologin -M
2、下載解壓軟件
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、初始化數據庫
/application/mysql/scripts/mysql_install_db --basedir=/application/mysql/ --datadir=/application/mysql/data/ --user=mysql
4、授權MySQL管理數據庫文件
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、配置啟動MySQL
sed -i ‘s#/usr/local/mysql#/application/mysql#g‘ /application/mysql/bin/mysqld_safe
/application/mysql/bin/mysqld_safe & 後臺開啟mysqld服務進程
lsof -i :3306 進程已開啟
7、配置環境變量
echo $PATH
cp /application/mysql/bin/* /usr/local/sbin/
which mysql
8、配置傳統方式啟動mysqld服務
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 發現進程已關閉
/etc/init.d/mysqld start
lsof -i :3306 發現進程已開啟
chkconfig mysqld on 設置開機自啟動
chkconfig --list mysqld 查看開機自啟動
安全優化
1、設置mysql密碼
mysqladmin -uroot password "123456"
mysql -uroot -p123456 用密碼登錄mysql
mysql -uroot -p 進入交互式密碼登錄
更改密碼
mysqladmin -uroot -p123456 password "wuyike"
2、安全優化
刪除test數據庫
drop database test;
刪除無用用戶
select user,host from mysql.user;
drop user ‘用戶‘@‘主機名‘ 用戶大寫,特殊字符刪不了,用delete(delete from mysql.user where user="root"and host="A";)
drop user ‘root‘@‘wuyike‘;
drop user ‘root‘@‘::1‘;
drop user ‘‘@‘wuyike‘;
剩下如下用戶:
mysql> select user,host from mysql.user;
+------+-----------+
| user | host |
+------+-----------+
| root | 127.0.0.1 |
| root | localhost |
+------+-----------+
如果誤刪:
grant all on *.* to ‘root‘@localhost identified by ‘123456‘with grant option;flush privileges;
3、簡單命令
幫助:help drop;
查庫:show databases;================>ls
切庫:use mysql或別的庫名; ==========>cd
查表:show tales;
查看用戶列表:select user,host from mysql.user;
查看當前用戶:select user();=========>whoami
查看當前所在庫:select database(); =======>pwd
刪除數據庫:drop database 庫名;
刪除用戶:drop user ‘用戶‘@‘主機‘;
http://blog.csdn.net/wh211212/article/details/52856240
mysql二進制安裝