[MySQL] Failed to start mysql.service: Unit mysql.service is masked.

Ubuntu upgrade ...

MySQL start FAIL !!!


Error Message : 




# service mysql start
Failed to start mysql.service: Unit mysql.service is masked.



# service mysql status
● mysql.service
   Loaded: masked (Reason: Unit mysql.service is masked.)
   Active: inactive (dead)


.....



Solution : 



# systemctl unmask mysql.service
# service mysql start



 ~enjoy~