centos7下安装mysql5.7数据库

转：https://blog.csdn.net/WYA1993/article/details/888908831.下载MySQL安装[root@localhost data]# wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm如果提示wget命令不存在，先执行：yum -y install...

sort浅忆

327人浏览 · 2018-11-02 15:25:20

sort浅忆 · 2018-11-02 15:25:20 发布

转：https://blog.csdn.net/WYA1993/article/details/88890883

1.下载MySQL安装
[root@localhost data]# wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm
如果提示wget命令不存在，先执行：yum -y install wget
下载完成后多了一个mysql57-xxx的文件，这个就是mysql安装源

2.安装mysql安装源

[root@localhost data]# yum -y localinstall mysql57-community-release-el7-11.noarch.rpm
3.在线安装MySQL

[root@localhost data]# yum -y install mysql-community-server
下载的东西有点多，需要等待一会

安装mysql数据库，遇到这个问题可以看下图：

4.启动MySQL服务

[root@localhost data]# systemctl start mysqld

查看服务状态

[root@localhost data]# sudo service mysqld status

查看数据库日志：sudo tail -f /var/log/mysqld.log
5.设置开机启动

[root@localhost data]# sudo systemctl enable mysqld
[root@localhost data]# sudo systemctl daemon-reload
6.修改root登录密码

mysql安装完成之后，会在/var/log/mysqld.log文件中给root生成了一个临时的默认密码。

[root@localhost data]# vim /var/log/mysqld.log

复制此密码，使用此密码登录root

[root@localhost data]# mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.25
 
Copyright (c) 2000, 2019, 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> 
修改密码， mysql5.7默认密码策略要求密码必须是大小写字母数字特殊字母的组合，至少8位

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'Test2016@';
Query OK, 0 rows affected (0.01 sec)

7.设置允许远程登录

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'Test2016@' WITH GRANT OPTION;
Query OK, 0 rows affected, 1 warning (0.00 sec)

配置立即生效：

mysql> FLUSH PRIVILEGES;

Query OK, 0 rows affected, 1 warning (0.00 sec)

第七步，退出

mysql> exit
Bye
8.，防火墙开放3306端口

在这之前您需要，查看防火墙状态，保证防火墙是开启状态
sudo systemctl status firewalld
开启防火墙
sudo systemctl start firewalld

[root@localhost data]# firewall-cmd --zone=public --add-port=3306/tcp --permanent

success
让防火墙重新加载-生效
[root@localhost data]# firewall-cmd --reload
success

[root@localhost data]#
9.配置mysql默认编码为utf-8

修改/etc/my.cnf配置文件，在[mysqld]下添加编码配置

character_set_server=utf8

init_connect='SET NAMES utf8'

:wq!保存退出

10.重启MySQL

[root@localhost data]# systemctl restart mysqld

11.登录root用户查看编码

命令：show variables like '%character%';