Azure External Load Balancer and Kubernetes cluster

Question

I have to create a Kubernetes cluster in MS Azure manually, not using AKS. So:

I've created 2 VM's in one Availability set: one for k8s master and second for k8s node.
I've created External Load Balancer and add 2 VM's to the backend pool.
I've created k8s cluster using kubespray.

I've created Deployment and LoadBalancer Service:

apiVersion: apps/v1beta1
kind: Deployment
metadata:
  name: wrapper
spec:
  replicas: 2
  template:
    metadata:
      labels:
        app: wrapper
    spec:
      containers:
      - name: wrapper
        image: wrapper:latest
        ports:
        - containerPort: 8080
          name: wrapper
---
apiVersion: v1
kind: Service
metadata:
  name: wrapper
spec:
  loadBalancerIP: <azure_loadbalancer_public_ip>
  type: LoadBalancer
  ports:
  - port: 8080
  selector:
    app: wrapper

But LoadBalancer service External-IP is always pending:

kubectl get services
NAME         TYPE           CLUSTER-IP    EXTERNAL-IP
wrapper      LoadBalancer   10.233.38.7   <pending>

Also, telnet azure_loadbalancer_public_ip doesn't work. I've tried to use NodePort instead of LoadBalancer, but in that case, I have two endpoints for my service on k8s master and on k8s node.

What I want is one entrypoint: azure_loadbalancer_public_ip, that is balances traffic between all nodes in the cluster.

Could you please help me to understand what I'm doing wrong and is it possible to "bind" Azure External Load Balancer with LoadBalancer service in Kubernetes?

4c74356b41 4c74356b41 · Accepted Answer · 2018-10-16T20:53:47

You dont have to do that, k8s (when its configured properly) handles that for you. All you have to do it give it proper rights to be able to create a load balancer in Azure.

Azure External Load Balancer and Kubernetes cluster

2 Answers