Firstsawyou commented on issue #3284:
URL: https://github.com/apache/apisix/issues/3284#issuecomment-760113766
Hi, @dickens7
I did not reproduce your problem in APISIX v2.2.
Here are the steps I reproduced:
1、APISIX version
```shell
./bin/apisix version
2.2
```
2、add global_rules
```shell
$ curl -X PUT \
> http://127.0.0.1:9080/apisix/admin/global_rules/1 \
> -H 'Content-Type: application/json' \
> -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' \
> -d '{"plugins": {"cors": {}}}'
{"node":{"value":{"plugins":{"cors":{"allow_credential":false,"allow_origins":"*","allow_headers":"*","expose_headers":"*","max_age":5,"allow_methods":"*"}},"id":"1"},"key":"\/apisix\/global_rules\/1"},"action":"set"}
```
3、add route
```shell
$ curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY:
edd1c9f034335f136f87ad84b625c8f1' -X PUT -i -d '
{
"uri": "/*",
"upstream": {
"type": "roundrobin",
"nodes": {
"127.0.0.1:80": 1
}
}
}'
HTTP/1.1 200 OK
Server: openresty
Date: Thu, 14 Jan 2021 10:35:17 GMT
Content-Type: application/json
Transfer-Encoding: chunked
Connection: keep-alive
Access-Control-Allow-Origin: *
Access-Control-Allow-Credentials: true
Access-Control-Expose-Headers: *
Access-Control-Max-Age: 3600
{"node":{"value":{"upstream":{"type":"roundrobin","pass_host":"pass","hash_on":"vars","nodes":{"127.0.0.1:80":1}},"status":1,"create_time":1610288363,"update_time":1610620517,"uri":"\/*","priority":0,"id":"1"},"key":"\/apisix\/routes\/1"},"action":"set"}
```
4、Initiate a request (upstream service is available):
```shell
$ curl http://127.0.0.1:9080/hello -i
HTTP/1.1 200 OK
Content-Type: application/octet-stream
Transfer-Encoding: chunked
Connection: keep-alive
Date: Thu, 14 Jan 2021 10:36:24 GMT
Server: APISIX/2.2
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: *
Access-Control-Max-Age: 5
Access-Control-Expose-Headers: *
Access-Control-Allow-Headers: *
80 service.
```
5、Initiate a request (upstream is not available):
```shell
curl http://127.0.0.1:9080/hello -i
HTTP/1.1 502 Bad Gateway
Date: Thu, 14 Jan 2021 10:39:49 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 154
Connection: keep-alive
Server: APISIX/2.2
X-APISIX-Upstream-Status: 502
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: *
Access-Control-Max-Age: 5
Access-Control-Expose-Headers: *
Access-Control-Allow-Headers: *
<html>
<head><title>502 Bad Gateway</title></head>
<body>
<center><h1>502 Bad Gateway</h1></center>
<hr><center>openresty</center>
</body>
</html>
```
error log:
```
2021/01/14 18:41:53 [error] 27477#27477: *2707934 connect() failed (111:
Connection refused) while connecting to upstream, client: 127.0.0.1, server: ,
request: "GET /hello HTTP/1.1", upstream: "http://127.0.0.1:80/hello";, host:
"127.0.0.1:9080"
2021/01/14 18:41:55 [error] 27476#27476: *2708040 connect() failed (111:
Connection refused) while connecting to upstream, client: 127.0.0.1, server: ,
request: "GET /hello HTTP/1.1", upstream: "http://127.0.0.1:80/hello";, host:
"127.0.0.1:9080"
2021/01/14 18:41:56 [error] 27476#27476: *2708075 connect() failed (111:
Connection refused) while connecting to upstream, client: 127.0.0.1, server: ,
request: "GET /hello HTTP/1.1", upstream: "http://127.0.0.1:80/hello";, host:
"127.0.0.1:9080"
```
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