ลบ mysql server บน ubuntu ไม่ได้ครับ

คือผมลง mysql server บน ubuntu vps แต่ติด error ครับ ผมเลยคิดว่าถ้าลบลงใหม่น่าจะได้
แต่ติดปัญหาที่ว่า ไม่สามารถลบออกได้ครับ ขึ้นให้ใส่รหัสตลอดเลยครับ
ใครพอถนัด ubuntu รบกวนด้วยนะครับ ก่อนหน้านี้ผมทำแต่ webserver ในเครื่องตัวเอง พึ่งลองเช่า vps ครับ

[open_code]root@20up:~# apt-get autoremove
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up mysql-server-5.5 (5.5.49-0ubuntu0.14.04.1) ...
Package configuration
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq



lqqqqqqqqqqqqqqqqqqqqqqConfiguring mysql-server-5.5qqqqqqqqqqqqqqqqqqqqqqqqqk
x While not mandatory, it is highly recommended that you set a password     x
x for the MySQL administrative "root" user.                                 x
x                                                                           x
x If this field is left blank, the password will not be changed.            x
x                                                                           x
x New password for the MySQL "root" user:                                   x
x lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk x
x x                                                                       x x
tqmqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqjqu
x                                 <  OK  >                                  x
mqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqj






chown: invalid user: 'mysql'
chown: invalid user: 'mysql'
chown: invalid user: 'mysql:adm'
chown: invalid user: 'mysql:adm'
chown: invalid user: 'mysql:adm'
start: Job failed to start
invoke-rc.d: initscript mysql, action "start" failed.
dpkg: error processing package mysql-server-5.5 (--configure):
subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
mysql-server-5.5
FATAL -> Failed to fork.
root@20up:~# apt-get autoremove
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up mysql-server-5.5 (5.5.49-0ubuntu0.14.04.1) ...
Package configuration
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq



lqqqqqqqqqqqqqqqqqqqqqqConfiguring mysql-server-5.5qqqqqqqqqqqqqqqqqqqqqqqqqk
x While not mandatory, it is highly recommended that you set a password     x
x for the MySQL administrative "root" user.                                 x
x                                                                           x
x If this field is left blank, the password will not be changed.            x
x                                                                           x
x New password for the MySQL "root" user:                                   x
x lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk x
x x                                                                       x x
tqmqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqjqu
x                                 <  OK  >                                  x
mqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqj






chown: invalid user: 'mysql'
chown: invalid user: 'mysql'
chown: invalid user: 'mysql:adm'
chown: invalid user: 'mysql:adm'
chown: invalid user: 'mysql:adm'
start: Job failed to start
invoke-rc.d: initscript mysql, action "start" failed.
dpkg: error processing package mysql-server-5.5 (--configure):
subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
mysql-server-5.5
FATAL -> Failed to fork.
root@20up:~#
[/close_code]