1.1 MySQL安装介绍
mysql软件下载地址信息: www.mysql.com mirrors.sohu.com
mysql软件下载完毕后,查看mysql解压后目录文件大小
1.下载解压mysql二进制软件包
链接:https://pan.baidu.com/s/145F-0VyaQ9C_-Xy8kNZLug 密码:cojx
下载解压MySQL二进制软件包
tar xf mysql-5.6.34-linux-glibc2.5-x86_64.tar.gz
2.MySQL程序运行时的管理用户
useradd -s /sbin./nologin -M mysql
id mysql
[root@web01 ~]# id mysql
uid=501(mysql) gid=501(mysql) groups=501(mysql)
3.mysql解压后的程序包搬家到程序目录下,并进行重命名
useradd -s /sbin./nologin -M mysql
id mysql
[root@web01 ~]# id mysql
uid=501(mysql) gid=501(mysql) groups=501(mysql)
4.为mysql服务程序创建软链接
ln -s /application/mmysql-5.6.34/ /application/mysql
[root@web01 tools]# ln -s /application/mysql-5.6.34/ /application/mysql
[root@web01 tools]# ll /application/mmysql
lrwxrwxrwx 1 root root 27 May 22 23:39 /application/mysql -> /application/mysql-5.6.34/
5.让mysql用户管理 /application/mysql/
chown -R mysql.mysql /application/mysql/
[root@web01 application]# ll
total 4
lrwxrwxrwx 1 root root 13 May 22 23:46 mysql -> mysql-5.6.34/
drwxr-xr-x 13 mysql mysql 4096 May 22 23:46 mysql-5.6.34
6.初始化数据库
#1. 确认软件安装在哪里
#2. 确认数据存放在哪里
#3. 确认MySQL使用的用户谁?
/application/mysql/scripts/mysql_install_db --basedir=/application/mysql --datadir=/application/mysql/data --user=mysql
[root@web01 application]# /application/mysql/scripts/mysql_install_db --basedir=/application/mysql --datadir=/application/mysql/data --user=mysql
To start mysqld at boot time you have to copy
support-files/mysql.server to the right place for your system
mysql启动脚本 默认放在support-files/mysql.server 记得给MySQL设置个密码
PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !
To do so, start the server, then issue the following commands:
/application/mysql/bin/mysqladmin -u root password 'oldboy123'
/application/mysql/bin/mysqladmin -u root -h web01 password 'new-password'
mysql5.7
cd /application/mysql/
./bin/mysqld --initialize --user=mysql --basedir=/application//mysql --datadir=/application/mysql/data
7.复制启动脚本 授权
cp /application/mysql/support-files/mysql.server /etc/init.d/mysqld
chmod +x /etc/init.d/mysqld
默认启动脚本放在的位置
加执行权限
8.修改启动脚本 和 mysql命令中的路径
sed -i 's#/usr/local/mysql#/application/mysql#g' /application/mysql/bin/mysqld_safe /etc/init.d/mysqld
9. 复制默认的配置文件
\cp /application/mysql/support-files/my-default.cnf /etc/my.cnf /etc/init.d/mysqld start
至此,mysql数据库安装与启动完成;可以检测进程和服务端口,确认mysql服务是否启动正确 [root@web01 application]# netstat -lntup |grep mysql
tcp 0 0 :::3306 :::* LISTEN 7725/mysqld
扩展:讲解管理mysql数据库
10.进入与退出mysql数据库方法:
/application/mysql/bin/mysql
扩展知识:登录数据库命令简化方法
echo 'export PATH=/application/mysql/bin:$PATH' >>/etc/profile
source /etc/profile
which mysql
退出数据库时,尽量不要用ctrl+c进行退出mysql 用ctrl+d进行退出
[root@web01 application]# echo $PATH
/application/mysql/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
11.设置mysql服务开机自启动
####11.加入开机自启动
chkconfig --add mysqld
chkconfig mysqld on
12.设置mysql数据库登录用户名与密码
SET PASSWORD FOR 'root'@localhost=PASSWORD('Your Password');
####12.给MySQL root用户设置密码
/application/mysql/bin/mysqladmin -u root password '123456'
mysql -uroot -p123456 [root@web01 application]# mysql -uroot -p123456
Warning: Using a password on the command line interface can be insecure.
[root@web01 application]# mysql -uroot -p123456
Warning: Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.6.34 MySQL Community Server (GPL) Copyright (c) 2000, 2016, 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>