k8s nginx ingress rewrite-target annotation not working as expected
You are misunderstanding the example. With your configuration requests to the rewrite target / will be rewritten to /config/, not the other way around. So you need to switch paths: use /config as rewrite target, and set the / path in the rule.
So the rewrite target is always where the external requests go to, the rule path where the requests to the service/pod go to.
apiVersion: extensions/v1beta1kind: Ingressmetadata: name: my-ingress annotations: kubernetes.io/ingress.class: "nginx" nginx.ingress.kubernetes.io/rewrite-target: /$1spec: rules: - http: paths: - path: /config/(.+) backend: serviceName: api-gateway servicePort: web