ConflictingGateways

This message occurs when two or more Gateway resources select the same gateway workload, use the same port, and have hosts that are the same or that overlap. Only one of these servers can be used.

An example

Consider these two Gateway resources:

apiVersion: networking.istio.io/v1
kind: Gateway
metadata:
  name: alpha
spec:
  selector:
    istio: ingressgateway
  servers:
  - port:
      number: 80
      name: http
      protocol: HTTP
    hosts:
    - "foo.example.com"
---
apiVersion: networking.istio.io/v1
kind: Gateway
metadata:
  name: beta
spec:
  selector:
    istio: ingressgateway
  servers:
  - port:
      number: 80
      name: http
      protocol: HTTP
    hosts:
    - "*.example.com"

You will receive this message:

Error [IST0145] (Gateway default/alpha) Conflict with gateways default/beta (workload selector istio=ingressgateway, port 80, hosts foo.example.com).

How to resolve

Do one of these:

• Put the hosts in one Gateway resource.
• Make sure that the hosts do not overlap.
• Use a different port or a different gateway workload for one of the Gateway resources.