( ! ) 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	360216	{main}( )	.../index.php:0
2	0.0003	361504	require( '/var/www/sites/www.wantysz.cn/wp-blog-header.php )	.../index.php:17
3	0.0005	371072	require_once( '/var/www/sites/www.wantysz.cn/wp-load.php )	.../wp-blog-header.php:13
4	0.0006	377208	require_once( '/var/www/sites/www.wantysz.cn/wp-config.php )	.../wp-load.php:50
5	0.0012	450912	require_once( '/var/www/sites/www.wantysz.cn/wp-settings.php )	.../wp-config.php:100
6	0.0180	3748944	require_wp_db( )	.../wp-settings.php:124
7	0.0198	4139560	wpdb->__construct( $dbuser = 'www.wantysz.cn', $dbpassword = '53372d2d0d488e971907fe2', $dbname = 'www.wantysz.cn', $dbhost = 'db' )	.../load.php:561
8	0.0198	4139560	wpdb->db_connect( $allow_bail = ??? )	.../wp-db.php:724
9	0.0199	4141128	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

360216

{main}( )

.../index.php:0

0.0003

361504

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

.../index.php:17

0.0005

371072

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

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

0.0006

377208

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

.../wp-load.php:50

0.0012

450912

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

.../wp-config.php:100

0.0180

3748944

require_wp_db( )

.../wp-settings.php:124

0.0198

4139560

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

.../load.php:561

0.0198

4139560

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

.../wp-db.php:724

0.0199

4141128

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	360216	{main}( )	.../index.php:0
2	0.0003	361504	require( '/var/www/sites/www.wantysz.cn/wp-blog-header.php )	.../index.php:17
3	0.0005	371072	require_once( '/var/www/sites/www.wantysz.cn/wp-load.php )	.../wp-blog-header.php:13
4	0.0006	377208	require_once( '/var/www/sites/www.wantysz.cn/wp-config.php )	.../wp-load.php:50
5	0.0012	450912	require_once( '/var/www/sites/www.wantysz.cn/wp-settings.php )	.../wp-config.php:100
6	0.0180	3748944	require_wp_db( )	.../wp-settings.php:124
7	0.0198	4139560	wpdb->__construct( $dbuser = 'www.wantysz.cn', $dbpassword = '53372d2d0d488e971907fe2', $dbname = 'www.wantysz.cn', $dbhost = 'db' )	.../load.php:561
8	0.0198	4139560	wpdb->db_connect( $allow_bail = ??? )	.../wp-db.php:724
9	0.0199	4141128	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

360216

{main}( )

.../index.php:0

0.0003

361504

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

.../index.php:17

0.0005

371072

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

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

0.0006

377208

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

.../wp-load.php:50

0.0012

450912

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

.../wp-config.php:100

0.0180

3748944

require_wp_db( )

.../wp-settings.php:124

0.0198

4139560

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

.../load.php:561

0.0198

4139560

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

.../wp-db.php:724

0.0199

4141128

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.