Wordpress changing site url in multisite environment.

gistfile1.txt

# update config.php:
define('DOMAIN_CURRENT_SITE', 'www.newsiteurl.tld');

# update wordpress/wp-content/uploads/nginx-helper/map.conf
# this step works only for NginX webserver

# update wp_options table
UPDATE `db_name`.`wp_options` SET `option_value`='http://www.newsiteurl.tld' WHERE `option_name`='home';
UPDATE `db_name`.`wp_options` SET `option_value`='http://www.newsiteurl.tld' WHERE `option_name`='siteurl';

# repeat this step foreach wp_x_options where x = integer
UPDATE `db_name`.`wp_x_options` SET `option_value`='http://www.newsiteurl.tld' WHERE `option_name`='home';
UPDATE `db_name`.`wp_x_options` SET `option_value`='http://www.newsiteurl.tld' WHERE `option_name`='siteurl';

# foreach record within wp_domain_mapping table update url:
UPDATE `db_name`.`wp_domain_mapping` SET `domain`='www.newsiteurl.tld' WHERE domain = 'www.oldsiteurl.tld';

# foreach record within wp_blogs table update url:
UPDATE `db_name`.`wp_blogs` SET `domain`='www.newsiteurl.tld' WHERE domain = 'www.oldsiteurl.tld';