Detailed explanation of MySQL installation tutorial in Linux centos7 environment (picture)

This article mainly introduces the MySQL installation tutorial in the Linux centos7 environment in detail. It has certain reference value. Interested friends can refer to the detailed steps of installing MySQL in the Linux centos7 environment.

Introduction

Installing MySQL

Mysql has two differences from windows

1), save my.ini to /etc/ my.ini

2), user permissions, single user execution

1. Find whether mysql has been installed before, use the following command:

rpm –qa | grep -i mysql

If the following package is displayed, it means mysql has been installed

mysql-4.1.12-3.RHEL4.1

mysqlclient10-3.23.58-4.RHEL4.1

2. Download the mysql decompression package

mysql-5.7.17-linux-glibc2.5-x86_64 .tar (go to http://mirrors.sohu.com to download)

URL: http://mirrors.sohu.com/mysql/MySQL-5.7/

You can also download it under the Linux operating system. Enter the following command

wget http://mirrors.sohu.com/mysql/MySQL-5.7/mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz

Create the directory software to store the mysql package we will download later. First go to the directory and enter the command: cd /software

After the download is completed, you will see an extra mysql installation package file in the software directory

3. Create a user and mysql directory

1. groupadd mysql #Create a mysql group

2. useradd -r -g mysqlmysql #Create a mysql user and put the user in the mysql group

3, passwd mysql #Set a password for the mysql user

4. Unzip the mysql installation package

1. First move the tar.gz package to the /usr/local directory and enter the command

mv /software/MySQL/mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz/usr/local

2. Decompress the tar.gz package

First go to the /usr/local directory and enter the command cd /usr/local

Decompression command tarzxvfmysql-5.7.17-linux-glibc2.5-x86_64.tar.gz

Enter the view directory command ll

and you will find that there are more Directorymysql-5.7.17-linux-glibc2.5-x86_64

##Note: No data directory, the my.ini file is in the support-files directory

5. Configure related startup configuration files

cpmy -default.cnf /etc/my.cnf

vi /etc/my.cnf (Enter editable state)

cp mysql.server /etc/init.d/mysql (mysql is the service name)

vi /etc/init. d/mysql

chown -R mysql:mysql /usr/local/mysql/

六、初始化mysql的数据库

1、初始化mysql

mysql_install_db （老版本的做法）

新版本： 初始化

输入命令 ./mysqld --initialize --user=mysql--basedir=/usr/local/mysql --datadir=/usr/local/mysql/data

生成出一个data目录，代表数据库已经初始化成功

并且mysql的root用户生成一个临时密码：(记录下临时密码XXX)

2、给数据库加密

输入命令 ./mysql_ssl_rsa_setup --datadir=/usr/local/mysql/data

3、启动mysql

输入命令 ./mysqld_safe --user=mysql & （&符表示提交到后台运行mysql服务）

七、进入客户端

1、登录

输入命令 ./mysql -uroot -p

然后再输入你的临时密码

2、修改密码

输入命令 set password=password(‘xxxx')

八、window远程访问Linux虚拟机的mysql

先来看看数据库结构

1、关闭防火墙 (或者给防火墙开放端口)，这样window才能连接上

输入命令 systemctl stop firewalld.service

2、给Windows授权

输入命令 mysql>grant all privileges on *.* toroot@'%' identified by '123456';

mysql>use mysql;
mysql>select host,user from user;

【多出一条远程登录用户记录】

mysql>flush privileges;

3、远程链接数据库，或者重启(init 6)。

输入命令：mysql –hIP地址 -uroot -p123456

九、设置开机自动启动mysql服务

1、添加mysql服务

输入命令 chkconfig --add mysql 【mysqld -install】

2、设置mysql服务为自动

输入命令 chkconfig mysql on

3、重启检查

init 6

ps –ef | grep mysql

十、设置path

输入命令 vi /etc/profile

输入命令 exportPATH=$JAVA_HOME/bin:/usr/local/mysql/bin:$PATH

配置好mysql环境变量后，我们往后登录mysql就不用再去到/usr/local/mysql/bin目录才能登录了，现在可以在任意目录下登录mysql了

到了这里我们就成功在Linux centos7环境下安装MySQL了。

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