One VM in a managed instance group (MIG) is unresponsive and you need to replace it immediately. What should you do?

The gcloud compute instance-groups managed recreate-instances command is the most direct and efficient way to replace a specific unresponsive VM within a managed instance group. This command terminates the specified instance and immediately creates a new one based on the MIG's current instance template, ensuring a quick replacement. Using gcloud compute instances update with a REFRESH action is not applicable here; gcloud compute instances commands operate on individual instances, not within the context of a MIG's managed lifecycle. While the Console offers a "Replace VMs" option, the question asks for a command-line solution. Updating and applying a new instance template would trigger an update across the entire MIG, which is overkill and potentially disruptive if only one VM needs replacement.