Question-15: A set of virtual machine (VM) instances that are controlled as a single entity is referred to as a managed instance group, abbreviated as MIG. Each virtual machine (VM) that is part of a MIG is created using an instance template. You wish to make the process of creating managed instance groups more automated. The VMs are dependent on a large number of OS package versions. You wish to reduce the amount of time required for new virtual machines to start up in the instance group. What is it that you ought to do?
A. Create the managed instance group with the help of Terraform, and then use a startup script to install the OS package requirements.
B. Make a personalized virtual machine image that includes all OS package dependencies. Create the managed instance group containing the VM image by employing the Deployment Manager in the process.
C. Creating the managed instance group and installing the OS package dependencies are both tasks that can be accomplished with Puppet.
D. Deployment Manager should be utilized for the creation of the managed instance group, and Ansible should be used for the installation of the OS package dependencies.
Correct Answer
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: 2 Explanation: Minimal start time means a pre-baked golden image. As someone who works on Terraform. It may not be Googles best practice, even though it's built in just need to be initialized. But it is the easiest way to build and restructure infrastructure with a simple line of code change and a quick shell command to apply terraform. Start up scripts aren't need here as you're making a custom OS image with all OS package dependencies. Question is not asking for the easiest way, it's asking how to minimize VM startup times. Not having to run the startup scripts because it's baked into the image is how I understand and interpret this, therefore Option-2 . Create a custom VM instance image with all OS dependencies. Use Deployment Manager to create a MIG with the VM image. Read more about Public and Custom VM Images: https://cloud.google.com/compute/docs/images Custom images are available in your project only, they don’t add cost to your VM instances, incur image storage cost (0.085$ GB/month).