Deploying a New Application on a Virtual Server

What is the BEST method to use when deploying a new application on a virtual server?

A. Take a snapshot of the VM before deploying the new application

B. Take a snapshot of the VM after deploying the new application

C. Ensure the server is configured for non-persistence

D. Back up the server after installing the new application

Answer:

Final answer: A. Take a snapshot of the VM before deploying the new application.

The BEST method is to take a snapshot of the VM before deploying the new application, allowing for easy roll back if issues occur.

Explanation:

The BEST method to use when deploying the new application on a virtual server that hosts another server application is to take a snapshot of the VM before deploying the new application (Option A). This allows you to capture the state of the virtual server before any changes are made. If anything goes wrong during the deployment, you can easily roll back to the previous snapshot and restore the server to its original state.

Taking a snapshot after deploying the new application (Option B) can also be helpful in case you need to revert to a known working state after making changes, but it is not the BEST method because it may save the server in an inconsistent state if any issues occur during the deployment process.

Option C, ensuring the server is configured for non-persistence, is not the BEST method because it eliminates data persistence on the server, which may not be ideal for the applications and user data.

Backing up the server after installing the new application (Option D) is not the BEST method because it does not address any potential issues that may arise during the deployment process.