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    • GCP Administration Guide

    Home FortiGate Public Cloud 7.4.0 GCP Administration Guide
    7.4.0
    7.6.0
    7.4.0
    7.2.0
    7.0.0
    6.4.0
    6.2.0

    Terraform variables

    Terraform variables

    The following table lists variables in the vars.tf file. You can change the values to suit your cluster needs.

    Resource

    Default

    Description

    project

    Requires input

    Project under which you will deploy the instance group. See Creating and managing projects.

    auth_key

    Requires input

    File name of the authentication key you use to connect to GCP. See Adding credentials.

    service_account

    Requires input

    Service account that you will use to call Cloud Functions. This allows Cloud Functions to be restricted to authorized calls.

    region

    us-central1

    GCP region

    zone

    us-central1-c

    GCP zone

    nodejs_version

    nodejs10

    Node.js version to use in Cloud Functions

    max_replicas

    3

    Maximum number of FortiGate-VM instances in the instance group. See Instance groups.

    min_replicas

    2

    Minimum number of FortiGate-VM instances in the instance group.

    cpu_utilization

    0.5

    Target CPU usage for the cluster to achieve. Instances scale out or in to meet this target.

    Note

    Autoscaling is based on CPU utilization. This deployment does not support autoscaling using custom metrics.

    cluster_name

    FortigateAutoScale

    Cluster name to use across objects (buckets, VPC, and so on)

    bucket_name

    fortigateautoscale

    Blob storage bucket name

    fortigate_image

    projects/fortigcp-project-001/global/images/fortinet-fgtondemand-623-20191223-001-w-license

    Source image for the instance group to use. The default image is FortiOS 6.2.3.

    instance

    n1-standard-1

    Instance family type for the scaling configuration to use.

    vpc_cidr

    172.16.0.0/16

    Classless inter-domain routing (CIDR) block for the FortiGate autoscale VPC divided into two /21 subnets.

    public_subnet

    172.16.0.0/21

    Public subnet that the FortiGate cluster uses.

    protected_subnet

    172.16.8.0/21

    Private subnet for VMs behind the FortiGate cluster.

    firewall_allowed_range

    0.0.0.0/0

    GCP firewall range to allow.

    Note
    • The default is to allow all.
    • If you use the GCP firewall policy to block incoming traffic, you must allow the load balancer to perform health checks and send data. For details on the IP addresses that will need access, see Probe IP ranges and firewall rules.

    target_size

    2

    Autoscale cluster target size. See Autoscaling groups of instances.

    SCRIPT_TIMEOUT

    500

    Timeout (in seconds) of a Cloud Functions invocation.

    MASTER_ELECTION_TIMEOUT

    400

    Maximum time in seconds to wait for a primary election to complete. This variable should be less than the total script timeout (SCRIPT_TIMEOUT).

    FORTIGATE_ADMIN_PORT

    8443

    Port number for FortiGate-VM administration. Do not use the FortiGate reserved ports 443, 541, 514, or 703. This value must be between 1 and 65535.

    This variable was previously used for the FortiGate Autoscale Cluster admin port.

    HEARTBEAT_INTERVAL

    25

    Length of time in seconds that a FortiGate-VM waits between sending heartbeat requests to the function.

    HEART_BEAT_DELAY_ALLOWANCE

    10

    Allowed variance in seconds before a heartbeat is considered out-of-sync and heartbeat loss is increased.

    HEART_BEAT_LOSS_COUNT

    10

    Number of consecutively lost heartbeats. When the heartbeat loss count has been reached, the FortiGate-VM is deemed unhealthy and failover activities commence.

    You can reference variables from the command line using the following:

    terraform plan -var "<var name>=<value>"
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    Terraform variables

    Terraform variables

    The following table lists variables in the vars.tf file. You can change the values to suit your cluster needs.

    Resource

    Default

    Description

    project

    Requires input

    Project under which you will deploy the instance group. See Creating and managing projects.

    auth_key

    Requires input

    File name of the authentication key you use to connect to GCP. See Adding credentials.

    service_account

    Requires input

    Service account that you will use to call Cloud Functions. This allows Cloud Functions to be restricted to authorized calls.

    region

    us-central1

    GCP region

    zone

    us-central1-c

    GCP zone

    nodejs_version

    nodejs10

    Node.js version to use in Cloud Functions

    max_replicas

    3

    Maximum number of FortiGate-VM instances in the instance group. See Instance groups.

    min_replicas

    2

    Minimum number of FortiGate-VM instances in the instance group.

    cpu_utilization

    0.5

    Target CPU usage for the cluster to achieve. Instances scale out or in to meet this target.

    Note

    Autoscaling is based on CPU utilization. This deployment does not support autoscaling using custom metrics.

    cluster_name

    FortigateAutoScale

    Cluster name to use across objects (buckets, VPC, and so on)

    bucket_name

    fortigateautoscale

    Blob storage bucket name

    fortigate_image

    projects/fortigcp-project-001/global/images/fortinet-fgtondemand-623-20191223-001-w-license

    Source image for the instance group to use. The default image is FortiOS 6.2.3.

    instance

    n1-standard-1

    Instance family type for the scaling configuration to use.

    vpc_cidr

    172.16.0.0/16

    Classless inter-domain routing (CIDR) block for the FortiGate autoscale VPC divided into two /21 subnets.

    public_subnet

    172.16.0.0/21

    Public subnet that the FortiGate cluster uses.

    protected_subnet

    172.16.8.0/21

    Private subnet for VMs behind the FortiGate cluster.

    firewall_allowed_range

    0.0.0.0/0

    GCP firewall range to allow.

    Note
    • The default is to allow all.
    • If you use the GCP firewall policy to block incoming traffic, you must allow the load balancer to perform health checks and send data. For details on the IP addresses that will need access, see Probe IP ranges and firewall rules.

    target_size

    2

    Autoscale cluster target size. See Autoscaling groups of instances.

    SCRIPT_TIMEOUT

    500

    Timeout (in seconds) of a Cloud Functions invocation.

    MASTER_ELECTION_TIMEOUT

    400

    Maximum time in seconds to wait for a primary election to complete. This variable should be less than the total script timeout (SCRIPT_TIMEOUT).

    FORTIGATE_ADMIN_PORT

    8443

    Port number for FortiGate-VM administration. Do not use the FortiGate reserved ports 443, 541, 514, or 703. This value must be between 1 and 65535.

    This variable was previously used for the FortiGate Autoscale Cluster admin port.

    HEARTBEAT_INTERVAL

    25

    Length of time in seconds that a FortiGate-VM waits between sending heartbeat requests to the function.

    HEART_BEAT_DELAY_ALLOWANCE

    10

    Allowed variance in seconds before a heartbeat is considered out-of-sync and heartbeat loss is increased.

    HEART_BEAT_LOSS_COUNT

    10

    Number of consecutively lost heartbeats. When the heartbeat loss count has been reached, the FortiGate-VM is deemed unhealthy and failover activities commence.

    You can reference variables from the command line using the following:

    terraform plan -var "<var name>=<value>"
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