CODEWITHSUNDEEP
kubernetes
Thai Nguyen
Thai Nguyen

Reputation: 3

Kubernetes network config

Precondition: the kubernetes cluster have 1 master and 2 worker. The cluster uses one CIDR for all nodes. Question: how to configure network to pod on worker1 can communicate with pod on worker2?

Upvotes: 0

Views: 287

Answers (2)

Le Khiem
Le Khiem

Reputation: 886

A kubernetes cluster consists of one or more nodes. A node is a host system, whether physical or virtual, with a container runtime and its dependencies (i.e. docker mostly) and several kubernetes system components, that is connected to a network that allows it to reach other nodes in the cluster. A simple cluster of two nodes might look like this:

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You can find more answers here

When the cluster use one CIDR for all nodes, the pod will be assigned ip address from one subnet.

Upvotes: 0

Shalauddin Ahamad Shuza
Shalauddin Ahamad Shuza

Reputation: 3657

Kubernetes has its own service discovery and you can use define service for communicate. If you want to communicate or send request to worker2 then you have to define a service for worker2. Suppose you have a worker add-service and you want to communicate with it, then you have to define a service for add-service worker like below

apiVersion: v1
kind: Service
metadata:
  name: add-service
spec:
  selector:
    app: add
  ports:
    - port: 3000
      targetPort: add-service

Then from worker1 you can user add-service to communicate and kuberntes will use service discovery to find the exact worker. Here is a hackernoon detail article about how to create pod, deployment, service and communicate with between them.

Upvotes: 2

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