( ! ) 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	0.0000	359072	{main}( )	.../index.php:0
2	0.0001	359352	require( '/var/www/sites/www.wantysz.cn/wp-blog-header.php )	.../index.php:17
3	0.0001	359736	require_once( '/var/www/sites/www.wantysz.cn/wp-load.php )	.../wp-blog-header.php:13
4	0.0001	360424	require_once( '/var/www/sites/www.wantysz.cn/wp-config.php )	.../wp-load.php:50
5	0.0001	361704	require_once( '/var/www/sites/www.wantysz.cn/wp-settings.php )	.../wp-config.php:100
6	0.0005	578944	require_wp_db( )	.../wp-settings.php:124
7	0.0005	580488	wpdb->__construct( $dbuser = 'www.wantysz.cn', $dbpassword = '53372d2d0d488e971907fe2', $dbname = 'www.wantysz.cn', $dbhost = 'db' )	.../load.php:561
8	0.0005	580488	wpdb->db_connect( $allow_bail = ??? )	.../wp-db.php:724
9	0.0006	582056	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

0.0000

359072

{main}( )

.../index.php:0

0.0001

359352

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

.../index.php:17

0.0001

359736

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

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

0.0001

360424

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

.../wp-load.php:50

0.0001

361704

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

.../wp-config.php:100

0.0005

578944

require_wp_db( )

.../wp-settings.php:124

0.0005

580488

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

.../load.php:561

0.0005

580488

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

.../wp-db.php:724

0.0006

582056

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	0.0000	359072	{main}( )	.../index.php:0
2	0.0001	359352	require( '/var/www/sites/www.wantysz.cn/wp-blog-header.php )	.../index.php:17
3	0.0001	359736	require_once( '/var/www/sites/www.wantysz.cn/wp-load.php )	.../wp-blog-header.php:13
4	0.0001	360424	require_once( '/var/www/sites/www.wantysz.cn/wp-config.php )	.../wp-load.php:50
5	0.0001	361704	require_once( '/var/www/sites/www.wantysz.cn/wp-settings.php )	.../wp-config.php:100
6	0.0005	578944	require_wp_db( )	.../wp-settings.php:124
7	0.0005	580488	wpdb->__construct( $dbuser = 'www.wantysz.cn', $dbpassword = '53372d2d0d488e971907fe2', $dbname = 'www.wantysz.cn', $dbhost = 'db' )	.../load.php:561
8	0.0005	580488	wpdb->db_connect( $allow_bail = ??? )	.../wp-db.php:724
9	0.0006	582056	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

0.0000

359072

{main}( )

.../index.php:0

0.0001

359352

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

.../index.php:17

0.0001

359736

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

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

0.0001

360424

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

.../wp-load.php:50

0.0001

361704

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

.../wp-config.php:100

0.0005

578944

require_wp_db( )

.../wp-settings.php:124

0.0005

580488

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

.../load.php:561

0.0005

580488

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

.../wp-db.php:724

0.0006

582056

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.