( ! ) 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	0.0001	360312	{main}( )	.../index.php:0
2	0.0001	361600	require( '/var/www/sites/www.wantysz.cn/wp-blog-header.php )	.../index.php:17
3	0.0002	371168	require_once( '/var/www/sites/www.wantysz.cn/wp-load.php )	.../wp-blog-header.php:13
4	0.0003	377304	require_once( '/var/www/sites/www.wantysz.cn/wp-config.php )	.../wp-load.php:50
5	0.0007	451008	require_once( '/var/www/sites/www.wantysz.cn/wp-settings.php )	.../wp-config.php:100
6	0.0165	3749040	require_wp_db( )	.../wp-settings.php:124
7	0.0184	4139656	wpdb->__construct( $dbuser = 'www.wantysz.cn', $dbpassword = '53372d2d0d488e971907fe2', $dbname = 'www.wantysz.cn', $dbhost = 'db' )	.../load.php:561
8	0.0184	4139656	wpdb->db_connect( $allow_bail = ??? )	.../wp-db.php:724
9	0.0184	4141224	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

0.0001

360312

{main}( )

.../index.php:0

0.0001

361600

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

.../index.php:17

0.0002

371168

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

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

0.0003

377304

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

.../wp-load.php:50

0.0007

451008

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

.../wp-config.php:100

0.0165

3749040

require_wp_db( )

.../wp-settings.php:124

0.0184

4139656

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

.../load.php:561

0.0184

4139656

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

.../wp-db.php:724

0.0184

4141224

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	0.0001	360312	{main}( )	.../index.php:0
2	0.0001	361600	require( '/var/www/sites/www.wantysz.cn/wp-blog-header.php )	.../index.php:17
3	0.0002	371168	require_once( '/var/www/sites/www.wantysz.cn/wp-load.php )	.../wp-blog-header.php:13
4	0.0003	377304	require_once( '/var/www/sites/www.wantysz.cn/wp-config.php )	.../wp-load.php:50
5	0.0007	451008	require_once( '/var/www/sites/www.wantysz.cn/wp-settings.php )	.../wp-config.php:100
6	0.0165	3749040	require_wp_db( )	.../wp-settings.php:124
7	0.0184	4139656	wpdb->__construct( $dbuser = 'www.wantysz.cn', $dbpassword = '53372d2d0d488e971907fe2', $dbname = 'www.wantysz.cn', $dbhost = 'db' )	.../load.php:561
8	0.0184	4139656	wpdb->db_connect( $allow_bail = ??? )	.../wp-db.php:724
9	0.0184	4141224	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

0.0001

360312

{main}( )

.../index.php:0

0.0001

361600

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

.../index.php:17

0.0002

371168

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

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

0.0003

377304

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

.../wp-load.php:50

0.0007

451008

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

.../wp-config.php:100

0.0165

3749040

require_wp_db( )

.../wp-settings.php:124

0.0184

4139656

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

.../load.php:561

0.0184

4139656

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

.../wp-db.php:724

0.0184

4141224

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.