1.下载 4个rpm包
mysql-community-client-5.7.26-1.el7.x86_64.rpm
mysql-community-common-5.7.26-1.el7.x86_64.rpm
mysql-community-libs-5.7.26-1.el7.x86_64.rpm
mysql-community-server-5.7.26-1.el7.x86_64.rpm
想要用迅雷进行下载得先找到对应的rpm下载路径
首先浏览器打开mysql官网：https://dev.mysql.com/downloads/mysql/5.7.html#downloads
在官网找到对应的版本：
右键复制链接地址，粘贴到迅雷即可下载：
如下给出了4个myql5.7 的rpm包的路径，直接打开迅雷填入下载路径就可以进行下载，其他版本可以用同样方法：
https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-community-server-5.7.26-1.el7.x86_64.rpm
https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-community-client-5.7.26-1.el7.x86_64.rpm
https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-community-common-5.7.26-1.el7.x86_64.rpm
https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-community-libs-5.7.26-1.el7.x86_64.rpm
2.上传rpm到linux
我这里用的xshell，没有安装xftp
在sftp输入 put命令，选择下载好的rpm包即可上传：
3.安装
已经上传好的rpm如下：
通过 rpm -ivh mysql-community-****-5.7.26-1.el7.x86_64.rpm --force --nodeps 进行安装，***表示common 、libs、client、server
安装顺序 common-->libs-->client-->server
如果没有--force --nodeps会出现告警：
warning: mysql-community-common-5.7.26-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
4.配置
启动mysql服务 ：
[root@localhost ~]# service mysqld start
Redirecting to /bin/systemctl start mysqld.service
[root@localhost ~]#
找到初始密码：
[root@localhost ~]# cat /var/log/mysqld.log |grep password
2019-06-02T08:39:38.448115Z 1 [Note] A temporary password is generated for root@localhost: dLZMCRv?s2q)
2019-06-02T08:40:41.870130Z 2 [Note] Access denied for user 'root'@'localhost' (using password: NO)
登陆mysql：
[root@localhost ~]# mysql -u root -p
密码为上面找到的dLZMCRv?s2q)
修改root密码：
mysql> alter user 'root'@'localhost' identified by 'newpasswd';
允许远程连接：
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'newpasswd' WITH GRANT OPTION;
mysql> FLUSH PEIVLEGES;
关闭防火墙：
[root@localhost ~]# systemctl stop firewalld.service
