In GCP, the concept of Multi-AZ is called “High Availability” and can be achieved by using Managed Instance Groups. To remediate the misconfiguration, you can follow these steps:

1. Open the Cloud Shell from the GCP Console.
2. Create a Managed Instance Group using the following command:

gcloud compute instance-groups managed create [GROUP_NAME] \
    --size [GROUP_SIZE] \
    --template [INSTANCE_TEMPLATE] \
    --base-instance-name [INSTANCE_NAME] \
    --zone [ZONE] \
    --health-check [HEALTH_CHECK]

Replace the placeholders in the command with the following values:

• [GROUP_NAME]: Name of the Managed Instance Group you want to create
• [GROUP_SIZE]: Number of instances you want to create in the group
• [INSTANCE_TEMPLATE]: Name of the instance template you want to use to create instances in the group
• [INSTANCE_NAME]: Base name of the instances in the group
• [ZONE]: Zone in which you want to create the instances
• [HEALTH_CHECK]: Name of the health check that will be used to verify the health of the instances

3. Once the Managed Instance Group is created, you can configure it to use the Multi-AZ feature by setting the autohealingPolicies property. Use the following command to set the property:

gcloud compute instance-groups managed update [GROUP_NAME] \
    --update-autoscaling-policy \
    --autohealing-policies health-check=[HEALTH_CHECK],initial-delay-sec=120

Replace the [GROUP_NAME] and [HEALTH_CHECK] placeholders with the actual values.

4. Verify that the Managed Instance Group has been configured for High Availability by checking the Instance Group details in the GCP Console.

By following these steps, you can remediate the misconfiguration of instances not being Multi-AZ in GCP using GCP CLI.

In GCP, the equivalent of Multi-AZ is called “Regionalization”. To remediate the misconfiguration of instances not being multi-AZ, you can use the following steps:

1. Identify the instances that are not regionalized. You can use the following Python code to get a list of all the instances that are not regionalized:

from google.cloud import compute_v1

compute_client = compute_v1.InstancesClient()

project_id = '[PROJECT_ID]'
zone = '[ZONE]'

instances = compute_client.list(project=project_id, zone=zone).items

for instance in instances:
    if not instance.region:
        print(f"Instance {instance.name} is not regionalized.")

Replace [PROJECT_ID] and [ZONE] with your GCP project ID and the zone in which your instances are running.

2. For each instance that is not regionalized, create a new instance in a regionalized zone and migrate the data.

from google.cloud import compute_v1

compute_client = compute_v1.InstancesClient()

project_id = '[PROJECT_ID]'
zone = '[ZONE]'
region = '[REGION]'

instances = compute_client.list(project=project_id, zone=zone).items

for instance in instances:
    if not instance.region:
        new_instance_name = f"{instance.name}-regionalized"
        new_instance_body = {
            "name": new_instance_name,
            "machine_type": f"zones/{region}/machineTypes/{instance.machine_type.split('/')[-1]}",
            "network_interfaces": instance.network_interfaces,
            "disks": instance.disks,
            "metadata": instance.metadata,
            "service_accounts": instance.service_accounts,
            "tags": instance.tags,
            "labels": instance.labels,
            "scheduling": instance.scheduling,
            "shielded_instance_config": instance.shielded_instance_config,
            "reservation_affinity": instance.reservation_affinity,
            "guest_accelerators": instance.guest_accelerators,
            "deletion_protection": instance.deletion_protection
        }

        operation = compute_client.insert(project=project_id, zone=region, body=new_instance_body)
        operation.wait()

        # Migrate data from the old instance to the new instance

        # Delete the old instance
        operation = compute_client.delete(project=project_id, zone=zone, instance=instance.name)
        operation.wait()

        print(f"Instance {instance.name} has been regionalized to {new_instance_name}.")

Replace [PROJECT_ID], [ZONE] and [REGION] with your GCP project ID, the zone in which your instances are running, and the region to which you want to regionalize your instances.

Note that this code will create a new instance in the specified region, migrate the data from the old instance to the new instance, and then delete the old instance. You should test this code thoroughly in a non-production environment before running it in production.