A Kubernetes Service is an abstract way to expose an application running on a cluster. It provides a stable network endpoint for your application, even if the underlying pods are constantly changing.
Kubernetes offers the following types of Services:
- ClusterIP
- NodePort
- LoadBalancer
- External
- Headless
ClusterIP
The ClusterIP service is the default Kubernetes service type. It assigns a cluster-internal IP address to the Service. Ideal for internal communication between Pods.
NodePort
A NodePort service exposes the application on a specific port on each node's IP address. It forwards traffic from that port to the underlying pods. Useful for development and testing, allowing access without a full load balancer setup.
LoadBalancer
A LoadBalancer service creates an external load balancer that routes traffic to the service's Pods. It is typically used in cloud environments
where load balancing is supported.Ideal for production applications that need to handle high traffic efficiently.
External
An External service allows you to connect to services that are outside your Kubernetes cluster. Useful for integrating with external APIs or
services. Allows Kubernetes applications to interact with resources that are not managed within the cluster.
Headless
A Headless service is a service without a ClusterIP. It enables direct access to the Pods without load balancing. Useful for stateful applications where you want to connect directly to specific Pods.
That's it for today!
Link to my LinkedIn post on "Understanding Kubernetes Services".
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