Day 33: Working with Namespaces in Kubernetes???

What are Namespaces and Services in k8s?

Namespaces in Kubernetes offer a mechanism to group and separate resources within a cluster. They enable several teams, users, or apps to work together in harmony within a Kubernetes cluster by dividing it virtually.

A resource in one namespace is segregated from resources in other namespaces with the same name. Each Kubernetes resource (such as pods, services, and deployments) belongs to a namespace. All resources produced without specifying a namespace are created in the "default" namespace that Kubernetes produces by default for each cluster.

TASK 1

Create a Namespace for your Deployment

Use the below command??to create a Namespace

kubectl create namespace <namespace-name>        

Add the namespace to the namespace.yml file

Use the following command to apply the modified deployment:

Resources in a Kubernetes cluster can be added or updated using the kubectl apply command. The file containing the definition of the resources you want to generate or update can be specified using the -f flag. The namespace in which the resources should be generated or changed is specified using the -n flag.

kubectl apply -f namespace.yml -n <namespace-name>        

Check the status of the namespaces in your cluster to confirm that the namespace has been created.

kubectl get namespaces        

The namespace you just created will be included in the list of namespaces that is returned. The namespace's state should be "Active," indicating that it has been established and is ready for use.

Task 2:

Read about services, load balancing, and networking in Kubernetes.

Service: A set of pods and the access policies for them are defined by a Kubernetes service, which is an abstraction layer. Services can load balance traffic between pods and give a consistent IP address and DNS name. This allows for inter-pod communication and separates the client from the backend pods.

Load balancing: The built-in load balancer service provided by Kubernetes enables you to split incoming traffic among many pods in a cluster. This enhances the scalability and dependability of your applications.

Networking: In Kubernetes, networking is in charge of establishing connections between pods and between the cluster and external networks. Routing, IP address management, and network policy enforcement are all included in this. Plugins that are integrated with the underlying network infrastructure are used to implement networking in Kubernetes.

Overall, the services offered by Kubernetes help to make it a powerful platform for deploying and managing containerized applications. By taking advantage of these services, you can build more robust, reliable, and scalable applications that can adapt to changing business requirements over time.

I appreciate your time, and I wish you luck in your professional endeavors????