Centos7 安装和配置MySQL5.7

不念不忘少年蓝@ 2022-02-26 09:18 298阅读 0赞

**第一步**，下载MySQL安装

[root@localhost ~]# cd /home/data/
    [root@localhost data]# ls
    get-docker.sh  nginx-1.10.1  nginx-1.10.1.tar.gz  redis-5.0.3  redis-5.0.3.tar.gz  server-jre-8u131-linux-x64.tar.gz  zookeeper-3.4.10.tar.gz
    [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

![20190329135028280.png][]

多了一个mysql57-xxx的文件，这个就是mysql安装源

安装mysql安装源

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

**第二步**，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

**第三步**，启动MySQL服务

[root@localhost data]# systemctl start mysqld

**第四步**，设置开机启动

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

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dZQTE5OTM_size_16_color_FFFFFF_t_70][]

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)

**第六步**，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)

**第七步**，退出

mysql> exit
    Bye

**第八步**，防火墙开放3306端口

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

**第九步**，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'

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dZQTE5OTM_size_16_color_FFFFFF_t_70 1][]

:wq!保存退出

**第十步**，重启MySQL

[root@localhost data]# systemctl restart mysqld

**第十一步**，登录root用户查看编码

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dZQTE5OTM_size_16_color_FFFFFF_t_70 2][]

**第十二步**，测试远程连接

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dZQTE5OTM_size_16_color_FFFFFF_t_70 3][]

![20190329155524834.png][]

[20190329135028280.png]: /images/20220226/e8d4241b80cd4ff2893fac62e9c79641.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dZQTE5OTM_size_16_color_FFFFFF_t_70]: /images/20220226/266f4c54e4344f0bac82b9e3db8d8825.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dZQTE5OTM_size_16_color_FFFFFF_t_70 1]: /images/20220226/1833e952049b40efa1459efd811a278b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dZQTE5OTM_size_16_color_FFFFFF_t_70 2]: /images/20220226/947311ee11c64e048c2819991bed85bf.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dZQTE5OTM_size_16_color_FFFFFF_t_70 3]: /images/20220226/76d59c5aa65a450584b0049e6877d655.png
[20190329155524834.png]: /images/20220226/5bbbbf60f53a43ffbfba7fc1819a8b5f.png