1in database/wp_options ('siteurl')

The easiest is to add it to "wp-config.php". Something like: 1define('WP_HOME','http://NEW_DOMAIN.com/'); 2define('WP_SITEURL','http://NEW_DOMAIN.com/'); You can test it in curl and see if it works: 1curl -IL http://NEW_DOMAIN.com URL change can be done via wp-cli. Do the …

For as long as you have root access to MySQL, this would work: 1UPDATE mysql.user SET Password=PASSWORD('new-password-here') WHERE USER='user-name-here' AND Host='host-name-here'; more details from https://www.cyberciti.biz/faq/mysql-change-user-password/