Exception

Database Exceptionyii\db\Exception

Failed to open redis DB connection (r-wz9b0da3b95ce494265.redis.rds.aliyuncs.com:6379, database=0): 0 - php_network_getaddresses: getaddrinfo failed: Name or service not known

Error Info: php_network_getaddresses: getaddrinfo failed: Name or service not known
$_GET = [
    'id' => '384038',
    'type_id' => '3522',
];

$_SERVER = [
    'USER' => 'apache',
    'HOME' => '/usr/share/httpd',
    'HTTP_ACCEPT_ENCODING' => 'br,gzip',
    'HTTP_IF_MODIFIED_SINCE' => 'Sat, 23 Nov 2019 02:16:27 GMT',
    'HTTP_ACCEPT_LANGUAGE' => 'en-US,en;q=0.5',
    'HTTP_ACCEPT' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
    'HTTP_USER_AGENT' => 'CCBot/2.0 (https://commoncrawl.org/faq/)',
    'HTTP_CONNECTION' => 'close',
    'HTTP_HOST' => 'xbzf.bibibi.net',
    'HTTP_X_FORWARDED_SERVER' => 'job.nwupl.edu.cn',
    'HTTP_X_FORWARDED_FOR' => '18.207.106.142',
    'HTTP_X_REAL_IP' => '18.207.106.142',
    'REDIRECT_STATUS' => '200',
    'SERVER_NAME' => 'cjy.zhzhu.edu.cn',
    'SERVER_PORT' => '80',
    'SERVER_ADDR' => '172.18.9.25',
    'REMOTE_PORT' => '32788',
    'REMOTE_ADDR' => '47.75.166.77',
    'SERVER_SOFTWARE' => 'nginx/5.0',
    'GATEWAY_INTERFACE' => 'CGI/1.1',
    'REQUEST_SCHEME' => 'http',
    'SERVER_PROTOCOL' => 'HTTP/1.0',
    'DOCUMENT_ROOT' => '/webser/www/campus/school/web',
    'DOCUMENT_URI' => '/index.php',
    'REQUEST_URI' => '/detail/news?id=384038&type_id=3522',
    'SCRIPT_NAME' => '/index.php',
    'CONTENT_LENGTH' => '',
    'CONTENT_TYPE' => '',
    'REQUEST_METHOD' => 'GET',
    'QUERY_STRING' => 'id=384038&type_id=3522',
    'SCRIPT_FILENAME' => '/webser/www/campus/school/web/index.php',
    'FCGI_ROLE' => 'RESPONDER',
    'PHP_SELF' => '/index.php',
    'REQUEST_TIME_FLOAT' => 1601193082.8274829,
    'REQUEST_TIME' => 1601193082,
];