New to gRPC:
Having a gRPC client, how do you use routing?
My gRPC server is at this local path 10.0.1.6/hw.
It is running and listening in a Kubernetes pod and it is working internally, if I run it in a pod. But I am now accessing it via url and ingress.
But how do I test that it actually is working with the routing without a port number?
const (
address = "10.0.1.6:80/hw"
defaultName = "World"
)
var (
conn *grpc.ClientConn
c pb.GreeterClient
)
func setupRPC() {
var err error
conn, err = grpc.Dial(address, grpc.WithInsecure())
c = pb.NewGreeterClient(conn)
if err != nil {
log.Fatalf("did not connect: %v", err)
}
}
I get this error:
could not greet: rpc error: code = Unavailable desc = all SubConns are in TransientFailure, latest connection error: connection error: desc = "transport: Error while dialing dial tcp: lookup tcp/80/hw: nodename nor servname provided, or not known"Do you know how? Or how to test gRPC endpoints?
If it is working internally in the pod, then you only need to expose it. You can do it by adding a yaml definition for a service. Like the following.
apiVersion: v1
kind: Service
metadata:
namespace: $YOUR_NAMESPCAE
labels:
app: $YOUR_SERVICE_NAME
name: $YOUR_SERVICE_NAME
spec:
ports:
- name: $YOUR_GRCP_PORT
port: $YOUR_GRCP_PORT
targetPort: $YOUR_GRCP_PORT
selector:
app: $YOUR_SERVICE_NAME
status:
loadBalancer: {}Note that where it says $YOUR_GRCP_PORTyou define the grcp port you will expose.
Now you only need to edit the ingress you mentioned. It should be something like the following.
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: vizix-ingress
namespace: preprod-vizix-io
annotations:
kubernetes.io/ingress.class: nginx
nginx.ingress.kubernetes.io/rewrite-target: "/"
spec:
rules:
- http:
paths:
- path: /
backend:
serviceName: $YOUR_SERVICE_NAME
servicePort: $YOUR_GRCP_PORT