mysql安裝配置

mysql安裝配置

• 安裝
  • 下載源安裝包
    wget -c https://repo.mysql.com//mysql57-community-release-el7-11.noarch.rpm
  • 更改源
    rpm -ivh mysql57-community-release-el7-11.noarch.rpm
  • 安裝
    yum -y install mysql-community-server
• 配置
  • 初始化mysql
    mysqld --initialize
  • 查找初始化密碼
    grep 'temporary password' /var/log/mysqld.log
  • 啓動mysql，此時可能報錯，查看vim /var/log/mysqld.log，查看錯誤內容，若提示InnoDB: The innodb_system data file 'ibdata1' must be writable，應該是data文件沒有數據權限，打開vim /etc/my.cnf，查看datadir=/var/lib/mysql，給其文件賦予權限chmod -R 777 mysql
  • 登陸mysql，輸入剛剛獲取到的初始密碼
    mysql -uroot -p
  • 重置密碼
    alter user 'root'@'localhost' identified by 'xxx'; 密碼要符合大小寫字母+數字+特殊字符，長度很多於8位
  • 授予遠程鏈接root的權限
    grant all privileges on *.* to 'root'@'%' identified by 'xxx' with grant option;
flush privileges;
  • 對外開放3306端口
    firewall-cmd --add-port=3306/tcp --permanent
firewall-cmd --reload