Open
Description
Currently there is no way to specify a Target selector in the case when a Target is created inline inside a VirtualService.
In particular, the below example to route DNS requests to a my-dns service should work:
kind: VirtualService
metadata:
name: dns-gateway
namespace: default
spec:
selector:
matchService: l7mp-ingress
listener:
spec:
UDP:
port: 5053
rules:
- action:
route:
destination:
cluster:
spec:
UDP:
port: 53
selector:
matchService: my-dns
Unfortunately, this is now rejected since the OpenAPI schema requires the route.destination property to contain a Cluster but this does not allow a the target service selector to be defined:
...
properties:
....
destination:
$ref: '#/components/schemas/Cluster'
Instead, the route.destination should point to a Target, which specifies its own target selector:
...
properties:
....
destination:
$ref: '#/components/schemas/Target'
A workaround exists: simply specify a separate Target, say, my-dns-target and then let the VirtualService route refer to this Target but this superfluously complicates the mesh config:
kind: VirtualService
metadata:
name: dns-gateway
namespace: default
spec:
selector:
matchService: l7mp-ingress
listener:
spec:
UDP:
port: 5053
rules:
- action:
route:
destinationRef: my-dns-target
Please, fix.