gcloud alpha compute target-pools set-backup

NAME: gcloud alpha compute target-pools set-backup - set a backup pool for a target pool
SYNOPSIS: gcloud alpha compute target-pools set-backup NAME (--backup-pool=BACKUP_POOL | --no-backup-pool) [--failover-ratio=FAILOVER_RATIO] [--region=REGION] [GCLOUD_WIDE_FLAG …]
DESCRIPTION: (ALPHA) gcloud alpha compute target-pools set-backup is used to set a backup target pool for a primary target pool, which defines the fallback behavior of the primary pool. If the ratio of the healthy instances in the primary pool is at or below the specified --failover-ratio value, then traffic arriving at the load-balanced IP address will be directed to the backup pool.
EXAMPLES: To cause TARGET-POOL (in region us-central1) to fail over to BACKUP-POOL when more than half of the TARGET-POOL instances are unhealthy, run:
gcloud alpha compute target-pools set-backup TARGET-POOL --backup-pool=BACKUP-POOL --failover-ratio=0.5 --region=us-central1

To remove BACKUP-POOL as a backup to TARGET-POOL, run:
gcloud alpha compute target-pools set-backup TARGET-POOL --backup-pool='' --region=us-central1
POSITIONAL ARGUMENTS: NAME

The name of the target pool for which to set the backup pool.
REQUIRED FLAGS: Exactly one of these must be specified:

--backup-pool=BACKUP_POOL

Name of the target pool that will serve as backup.

--no-backup-pool

Unsets the backup pool. This disables failover.
OPTIONAL FLAGS: --failover-ratio=FAILOVER_RATIO

The new failover ratio value for the target pool. This must be a float in the range of [0, 1].

--region=REGION

Region of the target pool to set a backup pool for. If not specified, you might be prompted to select a region (interactive mode only).
To avoid prompting when this flag is omitted, you can set the compute/region property:
gcloud config set compute/region REGION

A list of regions can be fetched by running:
gcloud compute regions list

To unset the property, run:
gcloud config unset compute/region

Alternatively, the region can be stored in the environment variable CLOUDSDK_COMPUTE_REGION.
GCLOUD WIDE FLAGS: These flags are available to all commands: --access-token-file, --account, --billing-project, --configuration, --flags-file, --flatten, --format, --help, --impersonate-service-account, --log-http, --project, --quiet, --trace-token, --user-output-enabled, --verbosity.
Run $ gcloud help for details.
NOTES: This command is currently in alpha and might change without notice. If this command fails with API permission errors despite specifying the correct project, you might be trying to access an API with an invitation-only early access allowlist. These variants are also available:
gcloud compute target-pools set-backup

gcloud beta compute target-pools set-backup