【centos7 + MySQL5.7 安装】centos7 安装MySQL5.7

水深无声 2023-07-24 08:18 17阅读 0赞

> 说明：我们安装MySQL位置在 /usr/local 下

## 第一步、下载MySQL 安装包： ##

[root@localhost local]# wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm

安装mysql 安装源：

[root@localhost local]# yum -y localinstall mysql57-community-release-el7-11.noarch.rpm

## 第二步，在线安装MySQL ##

[root@localhost local]# yum -y install mysql-community-server

等待时间比较久：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0VCX05VTQ_size_16_color_FFFFFF_t_70]

## 第三步、启动mysql 服务 ##

[root@localhost local]# systemctl start mysqld

## 第四步，设置开机启动 ##

[root@localhost local]# systemctl enable mysqld
     
    [root@localhost local]# systemctl daemon-reload

## 第五步，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 local]# vim /var/log/mysqld.log

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0VCX05VTQ_size_16_color_FFFFFF_t_70 1]  
记住初始密码：  
修改root 密码

[root@localhost local]# mysql -u root -p

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0VCX05VTQ_size_16_color_FFFFFF_t_70 2]

mysql>  ALTER USER 'root'@'localhost' IDENTIFIED BY 'daasan7ujm^YHN';
    Query OK, 0 rows affected (0.00 sec)
    # 设置远程登录
    mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'daasan7ujm^YHN' WITH GRANT OPTION;
    Query OK, 0 rows affected, 1 warning (0.00 sec)

第六步，退出

mysql> exit

## 第七步，防火墙开放3306端口 ##

[root@localhost sysconfig]# cd /etc/sysconfig/
    [root@localhost sysconfig]# vim iptables
    #添加代码如下
    -A INPUT -p tcp --dport 3306 -j ACCEPT

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0VCX05VTQ_size_16_color_FFFFFF_t_70 3]  
第八步，重启防火墙。

[root@localhost sysconfig]# service iptables restart

## 第九步，配置mysql默认编码为utf-8 ##

[root@localhost sysconfig]# vim /etc/my.cnf

添加如下代码

character_set_server=utf8
    init_connect='SET NAMES utf8'

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0VCX05VTQ_size_16_color_FFFFFF_t_70 4]  
:wq 保存退出

## 第十步，重启MySQL ##

[root@localhost data]# systemctl restart mysqld

## 第十一步， root 用户登录查看编码 ##

[root@localhost sysconfig]# mysql -u root -p
    Enter password: 
    Welcome to the MySQL monitor.  Commands end with ; or \g.
    Your MySQL connection id is 2
    Server version: 5.7.29 MySQL Community Server (GPL)
    
    Copyright (c) 2000, 2020, 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> show variables like '%character%';
    +--------------------------+----------------------------+
    | Variable_name            | Value                      |
    +--------------------------+----------------------------+
    | character_set_client     | utf8                       |
    | character_set_connection | utf8                       |
    | character_set_database   | utf8                       |
    | character_set_filesystem | binary                     |
    | character_set_results    | utf8                       |
    | character_set_server     | utf8                       |
    | character_set_system     | utf8                       |
    | character_sets_dir       | /usr/share/mysql/charsets/ |
    +--------------------------+----------------------------+
    8 rows in set (0.00 sec)
    
    mysql>

最后本地连接测试：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0VCX05VTQ_size_16_color_FFFFFF_t_70 5]

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