Patch status.loadBalancer.ingress IP manually

How to patch status.loadBalancer.ingress IPs manually to a service in a baremetal deployment?

For testing purposes, you might want to modify the status.loadBalancer.ingress of a service directly.

Here's how you can do this. First, create a service: 

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cat <<'EOF' > myservice.yaml
apiVersion: v1
kind: Service
metadata:
  name: myservice
spec:
  ports:
  - name: http
    port: 8888
    protocol: TCP
    targetPort: 80
  type: LoadBalancer
  selector:
    app: nginx-app
EOF
oc apply -f myservice.yaml

Then, open a proxy session: 

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oc proxy

Then, open another CLI session and patch the service's status field: 

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curl -XPATCH  -H "Accept: application/json" -H "Content-Type: application/json-patch+json"  --data '[{"op": "add", "path": "/status/loadBalancer/ingress", "value":[{"ip": "172.18.0.13"}]}]' http://localhost:8001/api/v1/namespaces/default/services/myservice/status

Now, verify: 

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[root@ovnkubernetes ~]# oc get svc  myservice -o yaml | tail -n 10
    protocol: TCP
    targetPort: 80
  selector:
    app: nginx-app
  sessionAffinity: None
  type: LoadBalancer
status:
  loadBalancer:
    ingress:
    - ip: 172.18.0.13
[root@ovnkubernetes ~]# oc get svc
NAME             TYPE           CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
myservice   LoadBalancer   10.96.105.206   172.18.0.13   8888:32165/TCP   12s