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Orchestration with Kubernetes

Kubernetes is an open-source container orchestration platform that automates the deployment, scaling, and management of containerized applications.

As a senior engineer interested in MERN stack development, you can leverage Kubernetes to achieve production-level readiness and efficiently manage your containerized applications.

Some key benefits of using Kubernetes for orchestration are:

  • Scalability: Kubernetes allows you to easily scale your applications by adding or removing containers based on resource usage.
  • Fault-tolerance: Kubernetes ensures high availability by automatically restarting containers or creating new ones if any failures occur.
  • Self-healing: Kubernetes monitors the health of containers and handles failed containers by automatically rescheduling them.
  • Service discovery and load balancing: Kubernetes provides built-in mechanisms for service discovery and load balancing between containers.
  • Rolling updates and rollbacks: Kubernetes facilitates seamless updates and rollbacks of applications without disrupting the production environment.

To deploy applications using Kubernetes, you need to:

  1. Install Kubernetes: Set up a Kubernetes cluster by following the installation guide for your platform.
  2. Define a Kubernetes manifest: Create a YAML file that describes your application, including containers, volumes, and other resources.
  3. Deploy the application: Use the kubectl apply command to deploy the application to your Kubernetes cluster.

Here's an example of a simple Kubernetes manifest for a Node.js application:

SNIPPET
1apiVersion: apps/v1
2kind: Deployment
3metadata:
4  name: my-node-app
5spec:
6  replicas: 3
7  selector:
8    matchLabels:
9      app: my-node-app
10  template:
11    metadata:
12      labels:
13        app: my-node-app
14    spec:
15      containers:
16        - name: my-node-app
17          image: my-node-app:v1
18          ports:
19            - containerPort: 3000
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