Is it possible to have kube-proxy without the kubernetes environment in vm pod using istio mesh expansion

4/10/2018

I have been working on a very innovative project which involves both Kubernetes and Istio. So, I have 2-node kubernetes cluster setup with istio installed withe their side cars in the pods. I have already hosted the bookinfo application in the nodes but by using a separate VM by following the procedures given in Istio Mesh-Expansion.

So I have VM where the details and Mysqldb pods are present. The other pods are running in the k8s cluster. So Now, They communicate within a private network.

So my next phase of project would require me to setup Kube-proxy separately without installing Kubernetes in the VM, so as to allow it to directly communicate to the Kube-Api Server running in the master nodes of the k8s cluster through the private network. Hence, Can anybody suggest a way how to go about this?

-- usha narayanan
istio
kube-proxy
kubernetes

1 Answer

4/12/2018

All components of Kubernetes should be connected to the kube-api. Otherwise, they will not work.

So my next phase of project would require me to setup Kube-proxy separately without installing Kubernetes in the VM, so as to allow it to directly communicate to the Kube-Api Server running in the master nodes of the k8s cluster through the private network.

To access the kube-api server using Service with the private ClusterIP address, you should already have a kube-proxy. So, it is impossible to use any ClusterIP private address until you setup kube-proxy which is communicating with your kube-api by its address outside the Cluster IP range.

Kube-api can be exposed using NodePort or LoadBalancer type of service.

-- Anton Kostenko
Source: StackOverflow