How to use the vps? of ssh bluehost as root

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I can only log in to my VPS. with permissions other than root
, but I want to use root

. 
xxx@xxx.com [~/.ssh]-sharp su
-jailshell: /bin/su: Permission denied
ssh root@xxx.xxx.xxx.xxx
root@xxx.xxx.xxx.xxx: Permission denied (publickey).

check how I can log in to my VPS? as root
how to configure

Ssh root vps bluehost
Apr.05,2021

modify the / etc/sudoers file, find the following line, and add a line under root, as follows: 

-sharp-sharp Allow root to run any commands anywhere
root    ALL=(ALL)     ALL
yourUserName   ALL=(ALL)     ALL

after modification, you can now log in with your yourUserName account, and then use the command sudo-to get root permission to operate.

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b38e49-2c135.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b38e49-2c135.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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