mysql-community社区版安装

• 1.安装mysql

  rpm -ivh mysql-community-common-8.0.13-1.el7.x86_64.rpmrpm -ivh mysql-community-libs-8.0.13-1.el7.x86_64.rpm rpm -ivh mysql-community-client-8.0.13-1.el7.x86_64.rpm rpm -ivh mysql-community-server-8.0.13-1.el7.x86_64.rpm

• 2.初始化

mysqld --initialize#获取密码grep "root@localhost" /var/log/mysqld.log |awk -F" " '{print $NF}'#保存密码echo -e "root\t$(grep "root@localhost" /var/log/mysqld.log |awk -F" " '{print $NF}')" >> /root/.mysql_passwd 

• 3.修改mysql db的charset为utf-8

  cat >> /etc/my.cnf <

• 4.启动后报错，查看日志，修改权限

#启动]# systemctl start mysqldJob for mysqld.service failed because the control process exited with error code. See "systemctl status mysqld.service" and "journalctl -xe" for details.#查看日志，ibdata1没有写权限vim /var/log/mysqld.log 2018-12-26T02:51:14.894580Z 1 [ERROR] [MY-012271] [InnoDB] The innodb_system data file 'ibdata1' must be writable2018-12-26T02:51:14.894641Z 1 [ERROR] [MY-012278] [InnoDB] The innodb_system data file 'ibdata1' must be writable#修改所有mysql目录及文件属主为mysqlchown -R mysql. /var/lib/   mysql*#再次启动，成功systemctl start mysqld #查看状态]# systemctl status mysqld?.mysqld.service - MySQL Server   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)   Active: active (running) since Wed 2018-12-26 10:57:21 CST; 4min 11s ago

• 5.数据库管理

-- 创建账号、分配权限CREATE USER 'user'@'localhost' IDENTIFIED BY 'password';GRANT ALL PRIVILEGES ON *.* TO 'user'@'localhost' WITH GRANT OPTION-- 修改密码，使数据库可以连接NavicatALTER USER 'user'@'%' IDENTIFIED WITH mysql_native_password BY 'password';-- 刷新权限FLUSH PRIVILEGES;-- 显示账号及权限相关信息SHOW GRANTS FOR 'user'@'localhost'; 

• 6. redis安装
     • https://redis.io/download