How many kube-proxy should be in a kubernetes cluster?

Question

I deployed kube.netes cluster in minikube which has one master node and one worker node. When I tried to see the kube-proxy with:

kubectl get pods -n kube-system

two kube-proxies apear

kube-proxy-6jxgq
kube-proxy-sq58d                 

According to the refrence architecture https://kube.netes.io/docs/concepts/overview/components/ kube-proxy is the component of worker node. I expect to see one kube-proxy not two. what is the reason?

Answer 1

kube-proxy runs on every node, when you use

kubectl get po -n kube-system -o wide

you will see the node the pods are running on

Answer 2

I have three nodes k8s cluster, one master and two worker nodes, i see 3 kube-proxy pods running, i tried to bring down a woker node, through i see 3 pods.

[root@devkmas01 ~]# kubectl get pods -n kube-system | grep -i kube-proxy
kube-proxy-msr8x                                 1/1     Running                  22         125d
kube-proxy-mwmqp                                 1/1     Running                  20         125d
kube-proxy-s8gwx                                 1/1     Running                  25         126d

[root@devkmas01 ~]# k get nodes
NAME                     STATUS     ROLES           AGE    VERSION
devkmas01.nirulabs.com   Ready      control-plane   126d   v1.24.3
devkwor01.nirulabs.com   Ready      <none>          125d   v1.24.3
devkwor02.nirulabs.com   NotReady   <none>          125d   v1.24.3

Answer 3

The official docs says:

kube-proxy is a.network proxy that runs on each node in your cluster, implementing part of the Kube.netes Service concept.

All cluster nodes, discarding its role, not just the worker node.