Best Method for 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. Apply blacklisting techniques on the server for the new applications

D. Back up the server after installing the new application

Answer:

The best method when deploying a new application on a virtual server, especially when other server applications are involved, is to take a snapshot of the VM before deploying the new application.

When deploying a new application on a virtual server, there are several methods to ensure the server's integrity and the continuity of the existing applications. Especially when other essential server applications are involved, it becomes more crucial. Out of the suggested methods, the BEST method is to take a snapshot of the VM before deploying the new application. This way, if something goes wrong during the deployment, you can revert to the snapshot and return the server to its original state.

A snapshot captures the exact state of a virtual machine at the point when the snapshot was taken including its configuration, OS, applications, associated data, system state, and so forth. Therefore, it's a beneficial method of ensuring you can roll back any changes if they cause issues.