1、删除已经安装的mysql和mariadb
查看已经安装的软件:rpm -qa|grep xxx
删除软件:yum remove xxx
2、下载mysql安装包
下载地址:https://dev.mysql.com/downloads/mysql/,选择为Red Hat Enterprise Linux 7 / Oracle Linux 7 ,把os的版本选择为all。
直接下载mysql-5.7.21-1.el7.x86_64.rpm-bundle.tar,所有的rpm包都在里面
rpm -ivh mysql-community-common-5.7.21-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.21-1.el7.x86_64.rpm
rpm -ivh mysql-community-devel-5.7.21-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-compat-5.7.21-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-5.7.21-1.el7.x86_64.rpm
rpm -ivh mysql-community-server-5.7.21-1.el7.x86_64.rpm
注意安装的顺序。
3、测试
1.首先关闭mysql服务:
service mysqld stop
2.然后修改配置文件:
vim /etc/my.cnf
3.接下来加入一句代码即可空密码登录mysql:
# Disabling symbolic-links is recommended to prevent assorted security risks
#添加下面这句话,这时候登入mysql就不需要密码
skip-grant-tables
symbolic-links=0
4.开启mysql服务:
service mysqld start
5.空密码登录mysql:
mysql -u root -p #输入命令回车进入,出现输入密码提示直接回车
6.设置mysql密码:
mysql> set password for root@localhost = password('123456');
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql>flush privileges; #更新权限
mysql>quit; #退出
service mysqld stop # 停止mysql服务, 恢复mysql配置
vim /etc/my.cnf #修改配置文件
# Disabling symbolic-links is recommended to prevent assorted security risks
# skip-grant-tables # 注释掉这句话
symbolic-links=0
service mysqld start # 启动mysql服务
mysql -uroot -p # 输入新密码登录
7.设置mysql开机自启:
systemctl enable mysqld
注:异常解决
问题:linux RPM格式安装mysql出现 错误:依赖检测失败: mariadb-libs 被 mysql-community-libs-8.0.13-1.el7.x86_64 取代。
解决办法:清除之前安装的依赖:yum remove mysql-libs

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