mysql 완전 재설치 : The driver has not received any packets from the server. 오류 해결

The driver has not received any packets from the server. 오류 해결(mysql 완전 재설치) 1.

문제의 발생 AWS를 활용하여 도커 배포를 실험을 한창 하고,,, 그다음 날. 인텔리제이를 켜고 평소처럼 localhost:8080의 세상으로 들어가려는 순간.

다음과 같은 오류를 만났다. com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. a.....