mysql安裝完成后不能用命令
systemctl start mysqld #啟動
systemctl stop mysqld #停止
解決辦法：
find / -name mysql.server
會出現服務路徑：
/usr/local/mysql/support-files/mysql.server
然后根據路徑啟動
/usr/local/mysql/support-files/mysql.server start
Shutting down MySQL.... SUCCESS! 輸出這一行，就說明執行成功
/usr/local/mysql/support-files/mysql.server stop
可以關閉成功
/usr/local/mysql/support-files/mysql.server status
查看mysql狀態