Kozatoo opened a new issue, #10505:
URL: https://github.com/apache/apisix/issues/10505
### Description
Context: I'm trying to build an application with an Auth Service which
should only validate the tokens, and admin service which sould be protected.
I am running APIsix from docker container, but I keep getting errors about
failing to parse the domain.
When runing echo $variable_name inside the container, it echoes perfectly.
But I still get these errors inside the log file.
The calls to the Auth service to check for the API are actually working, and
the call to Admin service as well. But I still get these errors in the logs
On another hand, when effectuating these API calls from a front-end
application, I get a CORS error, and I noted that the authorization header is
not present inside the request sent with forward-auth plugin (even though I've
added it inside the request_headers)
Here are the logs
```
2023/11/16 11:08:54 [error] 55#55: *160063 [lua] resolver.lua:80:
parse_domain(): failed to parse domain:
${{AUTH_SERVICE_IP:=}}:${{AUTH_SERVICE_PORT:=3000}}, error: failed to query the
DNSserver: dns server error: 3 name error, client: 172.21.0.1, server: _,
request: "OPTIONS /auth/greet HTTP/1.1", host: "localhost:8080", referrer:
"http://localhost:4200/";
2023/11/16 11:08:54 [error] 55#55: *160063 [lua] upstream.lua:79:
parse_domain_for_nodes(): dns resolver domain:
${{AUTH_SERVICE_IP:=}}:${{AUTH_SERVICE_PORT:=3000}} error: failed to query the
DNS server: dns server error: 3 name error, client: 172.21.0.1, server: _,
request: "OPTIONS /auth/greet HTTP/1.1", host: "localhost:8080", referrer:
"http://localhost:4200/";
2023/11/16 11:08:54 [error] 55#55: *160063 [lua] resolver.lua:80:
parse_domain(): failed to parse domain:
${{AUTH_SERVICE_IP:=}}:${{AUTH_SERVICE_PORT:=3000}}, error: failed to query the
DNSserver: dns server error: 3 name error, client: 172.21.0.1, server: _,
request: "GET /auth/greet HTTP/1.1", host: "localhost:8080", referrer:
"http://localhost:4200/";
2023/11/16 11:08:54 [error] 55#55: *160063 [lua] upstream.lua:79:
parse_domain_for_nodes(): dns resolver domain:
${{AUTH_SERVICE_IP:=}}:${{AUTH_SERVICE_PORT:=3000}} error: failed to query the
DNS server: dns server error: 3 name error, client: 172.21.0.1, server: _,
request: "GET /auth/greet HTTP/1.1", host: "localhost:8080", referrer:
"http://localhost:4200/";
2023/11/16 11:08:55 [warn] 55#55: *160063 [lua] plugin.lua:1107:
run_plugin(): forward-auth exits with http status code 401, client: 172.21.0.1,
server: _, request: "OPTIONS /admin/users HTTP/1.1", host: "localhost:8080",
referrer: "http://localhost:4200/";
```
apisix.yaml
```
routes:
- uri: /auth/*
plugins:
proxy-rewrite:
regex_uri: ["^/auth/(.*)","/$1"]
upstream:
nodes:
"${{AUTH_SERVICE_IP:=}}:${{AUTH_SERVICE_PORT:=3000}}": 1
type: roundrobin
- uri: /admin/*
plugins:
proxy-rewrite:
regex_uri: ["^/admin/(.*)","/$1"]
forward-auth:
uri:
http://${{AUTH_SERVICE_IP:=}}:${{AUTH_SERVICE_PORT:=3000}}/validate
ssl_verify: false
request_headers: ["Authorization",authorization]
upstream:
nodes:
"${{ADMIN_SERVICE_IP:=192.168.1.76}}:${{ADMIN_SERVICE_PORT:=3001}}":
1
#END
```
### Environment
APISIX: 3.6 dockerized
etcd:3.4.15 dockerized
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