Quinlan-Z opened a new issue, #1781:
URL: https://github.com/apache/apisix-ingress-controller/issues/1781
### Issue description
How to configure adding headers based on separated traffic?
How to implement the following configuration in apisix ingress?
```
split_clients "$remote_addr" $helloworld_backend {
10% helloworld_grey_server
* helloworld_official_server
}
upstream helloworld_official_server{
server helloworld_official-svc.applet.svc.cluster.local:11001
max_fails=3 fail_timeout=10s weight=100;
server helloworld_official-svc.applet:11001 max_fails=3 fail_timeout=10s
weight=100;
}
upstream helloworld_grey_server{
server helloworld-grey-svc.applet.svc.cluster.local:12001 max_fails=3
fail_timeout=10s weight=100;
server helloworld-grey-svc.applet:12001 max_fails=3 fail_timeout=10s
weight=100;
}
location /helloworld/v1/ {
if ($helloworld_backend ~ "helloworld_grey_server") {
proxy_set_header grey "yes";
}
proxy_pass http://$helloworld_backend/;
}
```
### Environment
- your apisix-ingress-controller version (output of
apisix-ingress-controller version --long): 1.6.0
- your Kubernetes cluster version (output of kubectl version): 1.22.0
- if you run apisix-ingress-controller in Bare-metal environment, also show
your OS version (uname -a):
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