MySQL安装

MySQL5.7安装步骤教程

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

1	`yum -y install wget`

下载完成后

多了一个mysql5.7-xxx的文件，这个就是mysql安装源

安装mysql安装源

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

第二步，在线安装MySQL

1	`[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

1	`[root@localhost data]# systemctl start mysqld`

第四步，设置开机启动

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[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。

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。

1 2	`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

1 2	`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

1 2	`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]#