CentOS 7安装mysql-8.0.18

官网下载https://dev.mysql.com/downloads/mysql/，本文安装包mysql-8.0.18-1.el7.x86_64.rpm-bundle.tar

安装步骤

1、在usr/local/mysql文件夹下，通过Xftp6上传mysql-8.0.18-1.el7.x86_64.rpm-bundle.tar文件，使用命令：tar -xvf mysql-8.0.18-1.el7.x86_64.rpm-bundle.tar，解压文件到当前目录下

2、安装顺序依次为common->libs->client->server

安装common命令：rpm -ivh mysql-community-common-8.0.18-1.el7.x86_64.rpm --nodeps --force

安装libs命令：rpm -ivh mysql-community-libs-8.0.18-1.el7.x86_64.rpm --nodeps --force

安装client命令：rpm -ivh mysql-community-client-8.0.18-1.el7.x86_64.rpm --nodeps --force

安装server命令：rpm -ivh mysql-community-server-8.0.18-1.el7.x86_64.rpm --nodeps --force

3、通过rpm -qa | grep mysql命令查看mysql的安装包

4、mysql数据库初始化和相关配置

mysqld --initialize

chown mysql:mysql /var/lib/mysql -R

启动防火墙

systemctl start mysqld.service

systemctl enable mysqld

5、通过cat /var/log/mysqld.log | grep password命令查看数据库随机生成的密码

初始密码为：w%l5hNFiap>K

6、mysql -uroot -p登录数据库

7、修改密码命令：ALTER USER ‘root’@’localhost’ IDENTIFIED WITH mysql_native_password BY ‘123456’; 操作完成后刷新MySQL的系统权限命令：FLUSH PRIVILEGES;

8、远程访问的授权命令

create user '用户名'@'主机' identified with mysql_native_password by '密码';

grant all privileges on *.* to '用户名'@'主机';

grant all privileges on *.* to '用户名'@'%' with grant option

grant select,insert,update,delete,create,drop,alert on *.* to '用户名'@'密码';

flush privileges;

show grants for '用户名'@'主机';

9、通过以下命令，关闭 firewall

systemctl stop firewalld.service;

systemctl disable firewalld.service;

systemctl mask firewalld.service;

10、通过yum -y install iptables-services命令安装iptables防火墙

15、通过vim /etc/sysconfig/iptables命令编辑防火墙，添加以下端口

-A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT

-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT

-A INPUT -m state --state NEW -m tcp -p tcp --dport 443 -j ACCEPT

-A INPUT -m state --state NEW -m tcp -p tcp --dport 8080 -j ACCEPT

-A INPUT -m state --state NEW -m tcp -p tcp --dport 8090 -j ACCEPT

……

16、systemctl restart iptables.service命令重启防火墙使配置生效

17、systemctl enable iptables.service命令设置防火墙开机启动