• 1.安裝MySQL

  rpm -ivh mysql-community-common-8.0.13-1.el7.x86_64.rpm
  rpm -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

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

• 3.修改mysql db的charset為utf-8

  

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  cat >> /etc/my.cnf <<EOF
  collation_server = utf8_general_ci
  character_set_server = utf8
  default_authentication_plugin=mysql_native_password
  EOF

• 4.啟動(dòng)后報(bào)錯(cuò)，查看日志，修改權(quán)限

#啟動(dòng)
]# systemctl start mysqld
Job 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沒(méi)有寫(xiě)權(quán)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 writable
2018-12-26T02:51:14.894641Z 1 [ERROR] [MY-012278] [InnoDB] The innodb_system data file 'ibdata1' must be writable
#修改所有mysql目錄及文件屬主為mysql
chown -R mysql. /var/lib/   mysql*
#再次啟動(dòng)，成功
systemctl start mysqld 
#查看狀態(tài)
]# 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.數(shù)據(jù)庫(kù)管理

-- 創(chuàng)建賬號(hào)、分配權(quán)限
CREATE USER 'user'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON *.* TO 'user'@'localhost' WITH GRANT OPTION
-- 修改密碼，使數(shù)據(jù)庫(kù)可以連接Navicat
ALTER USER 'user'@'%' IDENTIFIED WITH mysql_native_password BY 'password';
-- 刷新權(quán)限
FLUSH PRIVILEGES;
-- 顯示賬號(hào)及權(quán)限相關(guān)信息
SHOW GRANTS FOR 'user'@'localhost'; 

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

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