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Deploy Docker container to Kubernetes using YAML file

🎯 follow these steps:-

📌 Step 1: Prepare the Docker Image
Ensure that you have a Docker image ready. You can build your own image or use an existing one from a repository like Docker Hub.

📌 Step 2: Write the Kubernetes YAML File
Create a YAML file that defines the deployment. This file should include details such as the number of replicas, the image to use, and any other necessary configurations. Here’s an example of a basic YAML file for a Kubernetes deployment:-

yaml

apiVersion: apps/v1
kind: Deployment
metadata:
name: my-deployment
spec:
replicas: 3
selector:
matchLabels:
app: my-app
template:
metadata:
labels:
app: my-app
spec:
containers:
name: my-container
image: my-image:tag
ports:
containerPort: 80

📌 Step 3: Apply the YAML File
Use the kubectl apply command to create the deployment in your Kubernetes cluster. This command reads the YAML file and applies the specified configuration to the cluster:-

kubectl apply -f [YAML_FILE_NAME].yaml

📌 Step 4: Verify the Deployment
Check the status of your deployment to ensure that it has been created successfully:-

kubectl get deployments

📌 Step 5: Monitor and Manage the Deployment
You can scale the deployment up or down by adjusting the replicas value in the YAML file and re-applying it:-

kubectl apply -f [YAML_FILE_NAME].yaml

🎯 Additional Tips
Use Existing Tools: Consider using tools like kompose to convert Docker Compose files to Kubernetes YAML files, which can simplify the process if you are familiar with Docker Compose 7.
Version Control: Store your YAML files in a version control system like Git to track changes and collaborate with others. This is particularly useful for managing complex deployments and configurations 14.
By following these steps, you can effectively deploy Docker containers to Kubernetes using YAML files, allowing for scalable and manageable containerized applications in a Kubernetes environment.

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