도와주세요......ㅠ.ㅠ(MySQL갑자기 에러..)

게시물을 작성중에 갑자기  아래와같은메세지를 뿜으면서 접속이되질안네요...ㅠ.ㅠ

phpmyadmin도 접속이 되질않고..........

Warning: mysqli_connect(): (HY000/2002): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /home/osakalife/public_html/lib/common.lib.php on line 1618 Connect Error: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) 

phpmyadmin에러는

#2002 - The server is not responding (or the local MySQL server's socket is not correctly configured) 

와같이 나옵니다....

뭐가 잘못된건가요??ㅠ.ㅠ