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Your Compute Engine managed instance group is experiencing an outage where all instances keep restarting every 5 seconds. You have already configured a health check, but autoscaling is disabled. To resolve the issue, you need to allow your colleague, who is a Linux expert, to access the VMs for troubleshooting. What steps should you take to ensure he can access the VMs?




Explanation:

The correct answer is C: 'Disable the health check for the instance group. Add his SSH key to the project-wide SSH Keys.' Since the instances are restarting every 5 seconds, the health check might be failing and causing the instances to restart. Disabling the health check will prevent managed instance group from automatically recreating the instances, giving your colleague stable access to troubleshoot. Adding his SSH key to the project-wide SSH Keys will allow him to SSH into the instances and investigate the issue directly.