Domain 3.1: Deploying and implementing Compute Engine resources — GCP ACE Practice Question 20

How to approach this question

Remember that instance templates are immutable. To update a MIG, you need a new template and a rolling update.

Full Answer

Create a new instance template with the updated OS image, Start a rolling update on the MIG using the new instance template

In Google Cloud, Instance Templates are immutable; they cannot be changed after creation. To update the instances in a Managed Instance Group (MIG), you must first create a new instance template referencing the patched OS image. Then, you initiate a 'rolling update' on the MIG, which systematically replaces the old instances with new ones, maintaining availability.

Common mistakes

Believing you can edit an existing instance template, or choosing manual SSH updates which defeats the purpose of managed groups.

You have a Managed Instance Group (MIG) running a web application. You need to update the OS image for all instances in the group to patch a critical security vulnerability, without causing downtime.

Which TWO steps should you take? (Select TWO)

How to approach this question

Full Answer

Common mistakes

Practice the full GCP Associate Cloud Engineer Practice Exam 5

More questions from this exam

You have a Managed Instance Group (MIG) running a web application. You need to update the OS image for all instances in the group to patch a critical security vulnerability, without causing downtime. Which TWO steps should you take? (Select TWO)

How to approach this question

Full Answer

Common mistakes

Practice the full GCP Associate Cloud Engineer Practice Exam 5

More questions from this exam

You have a Managed Instance Group (MIG) running a web application. You need to update the OS image for all instances in the group to patch a critical security vulnerability, without causing downtime.

Which TWO steps should you take? (Select TWO)