八、centos7安装mysql5.7

yum update -y

sudo yum install -y wget 
wget https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm
sudo yum localinstall mysql80-community-release-el7-3.noarch.rpm
sudo yum install -y yum-utils
yum repolist enabled | grep "mysql.*-community.*"

sudo yum-config-manager --disable mysql80-community
sudo yum-config-manager --enable mysql57-community
yum repolist enabled | grep mysql

安装mysql：

sudo yum install -y mysql-community-server

这一步报错了

mysql-community-server-5.7.44-1.el7.x86_64.rpm 的公钥尚未安装

失败的软件包是：mysql-community-server-5.7.44-1.el7.x86_64

GPG 密钥配置为：file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022

执行后，再次安装mysql，就可以了。

启动mysql

sudo service mysqld start
sudo service mysqld status

从 MySQL 5.7 开始，mysql 安装之后，会默认随机生成一个临时密码,因此登录之后需要修改密码

查看生成的初始密码:

sudo grep 'temporary password' /var/log/mysqld.log

使用初始密码进行登录:

mysql -u root -p

设置新密码
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass4!';

设置远程登录权限，密码就是上面的新密码
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'yourNewPassword' WITH GRANT OPTION;

刷新权限
mysql> FLUSH PRIVILEGES;

mysql远程连接权限grant all privileges on *.* to 'root'@'%' identified by '123456' with grant option语句报错_grant all on *.* to-CSDN博客

密码设置之后安装即完成。

mysql开机启动命令:

mysql> exit
就可退出

systemctl enable mysqld

mysql的配置文件：

/etc/my.cnf

防火墙开放3306端口，外面用工具连接mysql：

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

放开之前

放开之后

至此，工具也能连接mysql了。

供后面安装artifactory使用