Day 34 Task: Working with Services in Kubernetes

🔶 What are Services in K8s

In Kubernetes, Services are objects that provide stable network identities to Pods and abstract away the details of Pod IP addresses. Services allow Pods to receive traffic from other Pods, Services, and external clients.

🔶 Task-1: Create a Service for your todo-app Deployment

• Create a Service for your todo-app Deployment from Day 32

  

      # First all update system and install Docker 
      sudo apt-get update
      sudo apt-get install docker.io -y
      sudo usermod -aG docker $USER && newgrp docker
  
      # To install Minikube & Kubectl
      curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
      sudo install minikube-linux-amd64 /usr/local/bin/minikube 
  
      sudo snap install kubectl --classic
      minikube start --driver=docker
  

• Clone this repository to your local machine:

    git clone https://github.com/Chandreshpatle28/django-todo-cicd-Jenkins.git
  

    sudo docker build . -t chandreshpatle28/django-todo:latest
  

• Create a Service definition for your todo-app Deployment in a YAML file.

•   apiVersion: v1
    kind: Service
    metadata:
      name: django-todo-services
      namespace: django-app
    spec:
      type: NodePort
      selector:
        app: django-app
      ports:
      - protocol: TCP
        port: 8000
        targetPort: 30007
  

• Apply the Service definition to your K8s (minikube) cluster using the kubectl apply -f service.yml -n <namespace-name> command.

•   kubectl create namespace django-app
  

  

•   kubectl create -f service.yml -n django-app
  

  

• Verify that the Service is working by accessing the todo-app using the Service's IP and Port in your Namespace.

🔶 Task-2: Create a ClusterIP Service for accessing the todo-app from within the cluster

• Create a ClusterIP Service for accessing the todo-app from within the cluster

•   apiVersion: v1
    kind: Service
    metadata:
      name: django-todo-services
      namespace: django-app
    spec:
      type: NodePort
      selector:
        app: django-app
      ports:
      - protocol: TCP
        port: 8000
      type: ClusterIP
  

  

• Create a ClusterIP Service definition for your todo-app Deployment in a YAML file.

• Apply the ClusterIP Service definition to your K8s (minikube) cluster using the kubectl apply -f cluster-ip-service.yml -n <namespace-name> command.

•    kubectl create -f cluster-service.yml -n django-app
  

• Verify that the ClusterIP Service is working by accessing the todo-app from another Pod in the cluster in your Namespace.

kubectl get all -n django-app

🔶 Task-3: Create a LoadBalancer Service for accessing the todo-app from outside the cluster

• Create a LoadBalancer Service for accessing the todo-app from outside the cluster

•   #LoadBalncer
    apiVersion: v1
    kind: Service
    metadata:
      name: django-todo-lb-services
      namespace: django-app
    spec:
      type: NodePort
      selector:
        app: django-app
      ports:
      - protocol: TCP
        port: 8000
        targetport: 8000
      type: LoadBalancer
  

• Create a LoadBalancer Service definition for your todo-app Deployment in a YAML file.

• Apply the LoadBalancer Service definition to your K8s (minikube) cluster using the kubectl apply -f load-balancer-service.yml -n <namespace-name> command.

•   kubectl apply -f loadbalancer.yml -n django-app
  

• Verify that the LoadBalancer Service is working by accessing the todo-app from outside the cluster in your Namespace.

•   kubectl get svc -n django-app
    minikube service list
  

  

    kubectl get all -n django-app
  

  

Struggling with Services? Take a look at this video for a step-by-step guide.

Need help with Services in Kubernetes? Check out the Kubernetes documentation for assistance.

Happy Learning :)

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