Load Balancer Service type in azure VM

Question

I have created a Kubernetes cluster ( 1 master, 2 workers VMs) using kubeadm on Azure. Node type service is working as expected. But Load Balancer service type is not working.

I have created the public IP address in azure and attached this IP to the service. I could see IP Address is attached for the service but this IP address is not accessible from outside.

And I have created the load balancer in Azure and attached the load balancer public IP address to the service that I have created in azure. This option also didn't work.

Just curious to know how to configure Load Balancer Service type in azure VM.

I have tried with aks and it worked with out any issues.

Answer 1

• I would suggest you to please follow the steps as given by me below for creating an AKS cluster in Azure and attaching a load balancer to that AKS cluster with a public IP for the front end for it. The steps for doing the said should be as below: -

a) Firstly, execute the below command in Azure CLI in Azure BASH cloud shell. The below creates an AKS cluster with two nodes in it of type ‘Linux’ with a ‘Standard’ load balancer in the said resource group where the ‘VM set type’ should be set as ‘VirtualMachineScaleSets’ with the appropriate version of Kubernetes being specified in it: -

 az aks create \
--resource-group <resource group name>\
--name <AKS cluster name> \
--vm-set-type <VMSS or Availability set> \
--node-count <node count> \
--generate-ssh-keys \
--kubernetes-version <version number> \
--load-balancer-sku <basic or standard SKU>

Sample command: -

 az aks create \
--resource-group AKSrg  \
--name AKStestcluster \
--vm-set-type VirtualMachineScaleSets \
--node-count 2 \
--generate-ssh-keys \
--kubernetes-version 1.16.8 \
--load-balancer-sku standard

I would suggest you to please use the below command to check the installed version of Kubernetes orchestrator in your Azure BASH cloud shell according to the region specified and use the appropriate version in the above command: -

  az aks get-versions --location eastus --output table

Then, I would suggest you use the below command for getting credentials of the AKS cluster created: -

   az aks get-credentials --resource-group <resource group name> --name <AKS cluster name>

b) Then execute the below command for getting the information of the created nodes: -

  kubectl get nodes

Once the information is fetched, then load the appropriate ‘YAML’ files in the AKS cluster and apply them to be run as an application on them. Then, check the service state as below: -

 kubectl get service <application service name> --watch

c) Then press ‘Ctrl+C’, after noting the public IP address of the load balancer. Then execute the below command for setting the managed outbound public IP for the AKS cluster and the configured load balancer: -

az aks update \
--resource-group myResourceGroup \
--name myAKSCluster \
--load-balancer-managed-outbound-ip-count 1 ’

This will ensure that the services running in the back end will have only one public IP in the front end. In this way, you will be able to create an AKS cluster with load balancer having a public IP address.