mysql安装教程

MySQL安装配置

1. 官网下载地址

https://dev.mysql.com/downloads/file/?id=471503

 

2.检测本地是否有mysql已存在的包

rpm -qa | grep mysql

 

3.检测本地是否有mariadb已存在的包

rpm -qa | grep mariadb

 

4.如果存在，则使用yum命令卸载

mariadb-libs-5.5.56-2.el7.x86_64

yum -y remove mariadb-libs-5.5.56-2.el7.x86_64

rpm -e --nodeps mariadb-libs-5.5.56-2.el7.x86_64

 

5.创建一个文件夹，上传jar包到/opt/software/mysql

mkdir /opt/software/mysql

 

6.解压mysql jar包

tar -xvf mysql-5.7.19-1.el7.x86_64.rpm-bundle.tar -C /opt/module/mysql

 

7.安装mysql的 server、client、common、libs、lib-compat

rpm -ivh --nodeps mysql-community-server-5.7.19-1.el7.x86_64.rpm

rpm -ivh --nodeps mysql-community-client-5.7.19-1.el7.x86_64.rpm

rpm -ivh mysql-community-common-5.7.19-1.el7.x86_64.rpm

rpm -ivh mysql-community-libs-5.7.19-1.el7.x86_64.rpm

rpm -ivh mysql-community-libs-compat-5.7.19-1.el7.x86_64.rpm

 

8.查看mysql的服务是否启动

systemctl status mysqld

Active: inactive (dead)

 

9.启动mysql的服务

systemctl start mysqld

 

10.再次检查mysql的服务是否启动

systemctl status mysqld

Active: active (running) since Thu 2019-03-21 07:23:08 EDT; 2s ago

 

11.查看默认生成的密码

cat /var/log/mysqld.log | grep password

2019-03-21T11:23:01.643479Z 1 [Note] A temporary password is generated for root@localhost: iwkJGgd:j6jO

 

12.登录mysql服务

mysql -uroot -p’然后粘贴上密码’

 

13.修改mysql密码规则

 

1. mysql> set global validate_password_policy=0;

Query OK, 0 rows affected (0.05 sec)

 

mysql> set global validate_password_mixed_case_count=0;

Query OK, 0 rows affected (0.00 sec)

 

 

mysql> set global validate_password_number_count=3;

Query OK, 0 rows affected (0.00 sec)

 

mysql> set global validate_password_special_char_count=0;

Query OK, 0 rows affected (0.00 sec)

 

密码最小长度，参数默认为8，

密码至少要包含的数字个数至少要包含的小写字母个数和大写字母个数

mysql> set global validate_password_length=3;

Query OK, 0 rows affected (0.00 sec)

1. 修改密码：

set password for root@localhost = password('000000');

（跳过）GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY '000000' WITH GRANT OPTION;

elect host,user from mysql.user;

flush privileges;