Fix MySQL expired password issue

mysql_expired_password.txt

# expired MySQL password
systemctl stop mysqld
systemctl set-environment MYSQLD_OPTS="--skip-grant-tables"
systemctl start mysqld

# login to the console and change the password
mysql -u root
UPDATE mysql.user SET authentication_string = PASSWORD('password123') WHERE User = 'root' AND Host = 'localhost';
FLUSH PRIVILEGES;
-- set passwords to never expire (optional)
SET GLOBAL default_password_lifetime = 0;
exit

# restart MySQL
systemctl stop mysqld
systemctl unset-environment MYSQLD_OPTS
systemctl start mysqld

# try and login with the new password
mysql -u root -p