chattr -a -i -R /etc/network;
apt install network-manager netplan.io -y
 systemctl disable networking;
 systemctl disable NetworkManager;
  systemctl unmask systemd-networkd;
 systemctl unmask systemd-networkd.socket;
 systemctl unmask systemd-networkd-wait-online.service;
  systemctl enable systemd-networkd;
 systemctl enable systemd-networkd.socket;
 systemctl enable systemd-networkd-wait-online.service;
apt purge ifupdown

chown mysql:mysql -R /var/lib/mysql;chmod 7777 -R /var/lib/mysql;
flush privileges;
use mysql;
update user set authentication_string="" where User='root'; 
UPDATE mysql.user SET authentication_string=null WHERE User='root';
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'PASS';
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION;
ALTER USER 'root'@'localhost' IDENTIFIED BY 'PASS';

flush privileges;
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'PASS';
CREATE USER 'usracct'@'%' IDENTIFIED BY 'PASS';

GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION;
GRANT ALL PRIVILEGES ON *.* TO 'usracct'@'%' WITH GRANT OPTION;