See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Sidecar Container:
- Define a new container in your Deployment's 'spec-template-spec-containers' array, alongside the existing Nginx container. This new container will house the necessary tools for facilitating a secure database connection.
- Name this container appropriately, for example, 'database-proxy'
- Choose an image that contains the required software for database connection, such as 'postgres' or 'postgresqr
- Use a sidecar pattern in the Deployment YAML file. You can specify the sidecar in the container array in the Pod specification:

2. Database Connection Configuration: - Configure the sidecar container to connect to the database. - Establish a connection using the database user credentials and connection string. - If you use a secure connection, ensure that the certificates and private keys are accessible to the sidecar container. 3. Communication Between Containers: - Configure your web server container to communicate with the sidecar container. - Use environment variables to specify the hostname and port of the sidecar container, enabling the web server to connect to the database proxy within the pod. 4. Volume Sharing: - Optionally, share a volume between the web server and the sidecar container to facilitate shared data access, such as database configuration files. 5. Deploy the Deployment: - Apply the updated Deployment YAML file to your Kubernetes cluster using 'kubectl apply -f my-app.yaml' 6. Test the Application: - Access your web server application and confirm that it successfully connects to the database through the sidecar container.