Google cloud internal lb

Instance Group

gcloud compute \
instance-groups unmanaged \
create consul-ig \
--zone us-central1-b

NAME       LOCATION       SCOPE  NETWORK  MANAGED  INSTANCES
consul-ig  us-central1-b  zone                     0

gcloud compute \
instance-groups set-named-ports consul-ig \
--named-ports "consul-8300:8300,consul-8301:8301,consul-8302:8302,consul-8400:8400,consul-8500:8500,consul-8600:8600"

gcloud compute instance-groups describe  consul-ig
creationTimestamp: '2017-02-20T01:57:22.904-08:00'
description: ''
fingerprint: i-B17zEMY3w=
id: '6384490727661306733'
isManaged: 'No'
kind: compute#instanceGroup
name: consul-ig
namedPorts:
- name: consul-8300
  port: 8300
- name: consul-8301
  port: 8301
- name: consul-8302
  port: 8302
- name: consul-8400
  port: 8400
- name: consul-8500
  port: 8500
- name: consul-8600
  port: 8600

gcloud compute instance-groups unmanaged add-instances us-ig1 \
    --instances ig-us-central1-1,ig-us-central1-2 --zone us-central1-b

Health Check

gcloud compute \
health-checks \
create tcp consul-tcp-health-check \
--port 8500

NAME                     PROTOCOL
consul-tcp-health-check  TCP

Backend Service

gcloud compute \
backend-services create consul-backend-service \
--load-balancing-scheme internal \
--region us-central1 \
--health-checks consul-tcp-health-check

gcloud compute backend-services add-backend  consul-backend-service\
    --instance-group consul-ig \
    --instance-group-zone us-central1-b \
    --region us-central1