( ! ) Warning: mysqli_real_connect(): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /var/www/sites/www.wantysz.cn/wp-includes/wp-db.php on line 1753
Call Stack
#	Time	Memory	Function	Location
1	0.0002	359008	{main}( )	.../index.php:0
2	0.0002	359288	require( '/var/www/sites/www.wantysz.cn/wp-blog-header.php )	.../index.php:17
3	0.0002	359672	require_once( '/var/www/sites/www.wantysz.cn/wp-load.php )	.../wp-blog-header.php:13
4	0.0002	360360	require_once( '/var/www/sites/www.wantysz.cn/wp-config.php )	.../wp-load.php:50
5	0.0002	361640	require_once( '/var/www/sites/www.wantysz.cn/wp-settings.php )	.../wp-config.php:100
6	0.0010	578880	require_wp_db( )	.../wp-settings.php:124
7	0.0010	580424	wpdb->__construct( $dbuser = 'www.wantysz.cn', $dbpassword = '53372d2d0d488e971907fe2', $dbname = 'www.wantysz.cn', $dbhost = 'db' )	.../load.php:561
8	0.0010	580424	wpdb->db_connect( $allow_bail = ??? )	.../wp-db.php:724
9	0.0011	581992	mysqli_real_connect( $link = class mysqli { public $client_info = 'mysqlnd 7.4.29'; public $client_version = 70429; public $connect_errno = 0; public $connect_error = NULL; public $errno = 0; public $error = '' }, $host = 'db', $user = 'www.wantysz.cn', $password = '53372d2d0d488e971907fe2', $database = NULL, $port = NULL, $socket = NULL, $flags = 0 )	.../wp-db.php:1753

( ! ) Warning: mysqli_real_connect(): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /var/www/sites/www.wantysz.cn/wp-includes/wp-db.php on line 1753

Call Stack

Time

Memory

Function

Location

0.0002

359008

{main}( )

.../index.php:0

0.0002

359288

require( '/var/www/sites/www.wantysz.cn/wp-blog-header.php )

.../index.php:17

0.0002

359672

require_once( '/var/www/sites/www.wantysz.cn/wp-load.php )

.../wp-blog-header.php:13

0.0002

360360

require_once( '/var/www/sites/www.wantysz.cn/wp-config.php )

.../wp-load.php:50

0.0002

361640

require_once( '/var/www/sites/www.wantysz.cn/wp-settings.php )

.../wp-config.php:100

0.0010

578880

require_wp_db( )

.../wp-settings.php:124

0.0010

580424

wpdb->__construct( $dbuser = 'www.wantysz.cn', $dbpassword = '53372d2d0d488e971907fe2', $dbname = 'www.wantysz.cn', $dbhost = 'db' )

.../load.php:561

0.0010

580424

wpdb->db_connect( $allow_bail = ??? )

.../wp-db.php:724

0.0011

581992

mysqli_real_connect( $link = class mysqli { public $client_info = 'mysqlnd 7.4.29'; public $client_version = 70429; public $connect_errno = 0; public $connect_error = NULL; public $errno = 0; public $error = '' }, $host = 'db', $user = 'www.wantysz.cn', $password = '53372d2d0d488e971907fe2', $database = NULL, $port = NULL, $socket = NULL, $flags = 0 )

.../wp-db.php:1753

( ! ) Warning: mysqli_real_connect(): (HY000/2002): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /var/www/sites/www.wantysz.cn/wp-includes/wp-db.php on line 1753
Call Stack
#	Time	Memory	Function	Location
1	0.0002	359008	{main}( )	.../index.php:0
2	0.0002	359288	require( '/var/www/sites/www.wantysz.cn/wp-blog-header.php )	.../index.php:17
3	0.0002	359672	require_once( '/var/www/sites/www.wantysz.cn/wp-load.php )	.../wp-blog-header.php:13
4	0.0002	360360	require_once( '/var/www/sites/www.wantysz.cn/wp-config.php )	.../wp-load.php:50
5	0.0002	361640	require_once( '/var/www/sites/www.wantysz.cn/wp-settings.php )	.../wp-config.php:100
6	0.0010	578880	require_wp_db( )	.../wp-settings.php:124
7	0.0010	580424	wpdb->__construct( $dbuser = 'www.wantysz.cn', $dbpassword = '53372d2d0d488e971907fe2', $dbname = 'www.wantysz.cn', $dbhost = 'db' )	.../load.php:561
8	0.0010	580424	wpdb->db_connect( $allow_bail = ??? )	.../wp-db.php:724
9	0.0011	581992	mysqli_real_connect( $link = class mysqli { public $client_info = 'mysqlnd 7.4.29'; public $client_version = 70429; public $connect_errno = 2002; public $connect_error = 'php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution'; public $errno = 2002; public $error = 'php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution' }, $host = 'db', $user = 'www.wantysz.cn', $password = '53372d2d0d488e971907fe2', $database = NULL, $port = NULL, $socket = NULL, $flags = 0 )	.../wp-db.php:1753

( ! ) Warning: mysqli_real_connect(): (HY000/2002): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /var/www/sites/www.wantysz.cn/wp-includes/wp-db.php on line 1753

Call Stack

Time

Memory

Function

Location

0.0002

359008

{main}( )

.../index.php:0

0.0002

359288

require( '/var/www/sites/www.wantysz.cn/wp-blog-header.php )

.../index.php:17

0.0002

359672

require_once( '/var/www/sites/www.wantysz.cn/wp-load.php )

.../wp-blog-header.php:13

0.0002

360360

require_once( '/var/www/sites/www.wantysz.cn/wp-config.php )

.../wp-load.php:50

0.0002

361640

require_once( '/var/www/sites/www.wantysz.cn/wp-settings.php )

.../wp-config.php:100

0.0010

578880

require_wp_db( )

.../wp-settings.php:124

0.0010

580424

wpdb->__construct( $dbuser = 'www.wantysz.cn', $dbpassword = '53372d2d0d488e971907fe2', $dbname = 'www.wantysz.cn', $dbhost = 'db' )

.../load.php:561

0.0010

580424

wpdb->db_connect( $allow_bail = ??? )

.../wp-db.php:724

0.0011

581992

mysqli_real_connect( $link = class mysqli { public $client_info = 'mysqlnd 7.4.29'; public $client_version = 70429; public $connect_errno = 2002; public $connect_error = 'php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution'; public $errno = 2002; public $error = 'php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution' }, $host = 'db', $user = 'www.wantysz.cn', $password = '53372d2d0d488e971907fe2', $database = NULL, $port = NULL, $socket = NULL, $flags = 0 )

.../wp-db.php:1753

php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution

Error establishing a database connection

This either means that the username and password information in your wp-config.php file is incorrect or that contact with the database server at db could not be established. This could mean your host’s database server is down.

Are you sure you have the correct username and password?
Are you sure you have typed the correct hostname?
Are you sure the database server is running?

If you are unsure what these terms mean you should probably contact your host. If you still need help you can always visit the WordPress Support Forums.