如果你需要重新安裝MySQL,遵循以下步驟:
1. 首先,卸載現有的MySQL: sudo yum remove mysql-server mysql mysql-libs 2. 然后,刪除MySQL數據目錄: sudo rm -rf /var/lib/mysql 3. 更新CentOS軟件包: sudo yum update 4. 安裝MySQL依賴: sudo yum install wget sudo yum groupinstall 'Development Tools' sudo yum install libaio libaio-devel 5. 下載MySQL二進制文件并解壓縮: wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.34-linux-glibc2.12-x86_64.tar.gz sudo tar -xzvf mysql-5.7.34-linux-glibc2.12-x86_64.tar.gz -C /usr/local/ mv /usr/local/mysql-5.7.34-linux-glibc2.12-x86_64 /usr/local/mysql 6. 創建MySQL配置文件: sudo touch /etc/my.cnf sudo echo "[mysqld]" >>/etc/my.cnf sudo echo "basedir=/usr/local/mysql" >>/etc/my.cnf sudo echo "datadir=/var/lib/mysql" >>/etc/my.cnf sudo echo "socket=/var/lib/mysql/mysql.sock" >>/etc/my.cnf sudo echo "port=3306" >>/etc/my.cnf 7. 設置MySQL數據目錄權限: sudo chown -R mysql:mysql /var/lib/mysql 8. 初始化MySQL: sudo /usr/local/mysql/bin/mysqld --initialize --user=mysql 9. 開啟MySQL服務: sudo systemctl start mysql sudo systemctl status mysql 10. 配置MySQL root密碼: sudo /usr/local/mysql/bin/mysql_secure_installation
完成以上步驟,您已成功重新安裝MySQL。