location /nacos/ {
 set $flag 0;
    if ($remote_addr !~ ^(10.0.37.155|10.0.37.154|10.0.37.156|10.0.37.162|10.0.37.163|10.0.37.164|10.0.37.165|10.0.37.157|10.0.37.158)) {set $flag 1;}
    if ($host ~ "^hn8.do1.net*$") {set $flag 0;}
    if ($flag = 1) {return 403;}
    proxy_pass http://nacosserv;
  }
  error_page 403 /403page.html;
  location = /403page.html{
      root html;
  }