linux源码安装mysql5.7

  • 来源:网络
  • 更新日期:2020-07-09

摘要:1. 下载mysql源安装包wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm2. 安装mysql源yum localinstall mysql57-community-release-el7-8.noarc

1. 下载mysql源安装包

wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm

2. 安装mysql源

yum localinstall mysql57-community-release-el7-8.noarch.rpm

3. 检查mysql源是否安装成功

yum repolist enabled | grep "mysql.*-community.*"

4.看到上图表示安装成功

可以修改vim /etc/yum.repos.d/mysql-community.repo源,改变默认安装的mysql版本。比如要 安装5.6版本,将5.7源的enabled=1改成enabled=0。然后再将5.6源的enabled=0改成enabled=1即可。改完之后的效果如下所示:

5.安装Mysql

yum install mysql-community-server

6.启动Mysql

systemctl start mysqld

7.开机启动

systemctl enable mysqldsystemctl daemon-reload

8.修改root本地登录密码

mysql安装完成之后,在/var/log/mysqld.log文件中给root生成了一个默认密码。通过下面的方式找到root默认密码,然后登录mysql进行修改:

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

命令:

mysql -uroot -p

问题:centos7.0安装完mysql5.7.11之后使用mysql -u root -p 连接数据库。操作提示:You must reset your password using ALTER USER statement before executing this statement.

按照提示ALTER USER 修改密码无效,后来发现执行如下命令即可:

SET PASSWORD = PASSWORD(‘123456’);
set password for 'root'@'localhost'=password('你的新密码');

默认密码检查策略要求密码必须包含:大小写字母、数字和特殊符号,并且长度不能少于8位。否则会提示ERROR 1819 (HY000): Your password does not satisfy the current policy requirements错误,如下图所示:

grant all on *.* to 'root'@'127.0.0.1' identified by '123123'WITH GRANT OPTION;
flush privileges; //刷新权限表

注意事项:

修改配置后要重新启动mysql服务生效:

systemctl restart mysqld

默认配置文件路径:

配置文件:/etc/my.cnf

日志文件:/var/log//var/log/mysqld.log

服务启动脚本:/usr/lib/systemd/system/mysqld.service

socket文件:/var/run/mysqld/mysqld.pid