( ! ) 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	359216	{main}( )	.../index.php:0
2	0.0003	359496	require( '/var/www/sites/www.wantysz.cn/wp-blog-header.php )	.../index.php:17
3	0.0003	359880	require_once( '/var/www/sites/www.wantysz.cn/wp-load.php )	.../wp-blog-header.php:13
4	0.0004	360568	require_once( '/var/www/sites/www.wantysz.cn/wp-config.php )	.../wp-load.php:50
5	0.0004	361848	require_once( '/var/www/sites/www.wantysz.cn/wp-settings.php )	.../wp-config.php:100
6	0.0014	579088	require_wp_db( )	.../wp-settings.php:124
7	0.0014	580632	wpdb->__construct( $dbuser = 'www.wantysz.cn', $dbpassword = '53372d2d0d488e971907fe2', $dbname = 'www.wantysz.cn', $dbhost = 'db' )	.../load.php:561
8	0.0015	580632	wpdb->db_connect( $allow_bail = ??? )	.../wp-db.php:724
9	0.0016	582200	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

359216

{main}( )

.../index.php:0

0.0003

359496

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

.../index.php:17

0.0003

359880

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

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

0.0004

360568

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

.../wp-load.php:50

0.0004

361848

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

.../wp-config.php:100

0.0014

579088

require_wp_db( )

.../wp-settings.php:124

0.0014

580632

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

.../load.php:561

0.0015

580632

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

.../wp-db.php:724

0.0016

582200

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	359216	{main}( )	.../index.php:0
2	0.0003	359496	require( '/var/www/sites/www.wantysz.cn/wp-blog-header.php )	.../index.php:17
3	0.0003	359880	require_once( '/var/www/sites/www.wantysz.cn/wp-load.php )	.../wp-blog-header.php:13
4	0.0004	360568	require_once( '/var/www/sites/www.wantysz.cn/wp-config.php )	.../wp-load.php:50
5	0.0004	361848	require_once( '/var/www/sites/www.wantysz.cn/wp-settings.php )	.../wp-config.php:100
6	0.0014	579088	require_wp_db( )	.../wp-settings.php:124
7	0.0014	580632	wpdb->__construct( $dbuser = 'www.wantysz.cn', $dbpassword = '53372d2d0d488e971907fe2', $dbname = 'www.wantysz.cn', $dbhost = 'db' )	.../load.php:561
8	0.0015	580632	wpdb->db_connect( $allow_bail = ??? )	.../wp-db.php:724
9	0.0016	582200	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

359216

{main}( )

.../index.php:0

0.0003

359496

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

.../index.php:17

0.0003

359880

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

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

0.0004

360568

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

.../wp-load.php:50

0.0004

361848

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

.../wp-config.php:100

0.0014

579088

require_wp_db( )

.../wp-settings.php:124

0.0014

580632

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

.../load.php:561

0.0015

580632

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

.../wp-db.php:724

0.0016

582200

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.