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SAP APP DR SVPC Submodule

This module handles opinionated SAP APP DR SVPC configuration and deployment.

Usage

The resources/services/activations/deletions that this module will create/trigger are:

  • Create a Compute Instance that whill host SAP HANA
  • Create a Static IP Adresse for the Compute Instance
  • Create a 2 Persistent Disks to host SAP App Dr's File systems

You can go in the examples folder complete working example. However, here's an example of how to use the module in a main.tf file.

module "gcp_sap_app_dr_svpc" {
  source                 = "../../modules/sap_app_dr_svpc"
  subnetwork            = "${var.subnetwork}"
  instance_name         = "${var.instance_name}"
  instance_type         = "${var.instance_type}"
  project_id            = "${var.project_id}"
  subnetwork_project       = "${var.subnetwork_project}"
  region                = "${var.region}"
  service_account_email = "${var.service_account_email}"
  address_name          = "${var.address_name}"
  zone_1                = "${var.zone_1}"
  zone_2                = "${var.zone_2}"
  usc_class             = "${var.usc_class}"
  scs_user              = "${var.scs_user}"
  sap_user              = "${var.sap_user}"
  network_tags          = "${var.network_tags}"
  disk_type             = "${var.disk_type}"
  pd_ssd_size           = "${var.pd_ssd_size}"
  snapshot_name_0       = "${var.snapshot_name_0}"
  snapshot_name_1       = "${var.snapshot_name_1}"
  snapshot_name_2       = "${var.snapshot_name_2}"
  source_disk_0         = "${var.source_disk_0}"
  source_disk_1         = "${var.source_disk_1}"
  source_disk_2         = "${var.source_disk_2}"
}

Requirements

Make sure you've gone through the root Requirement Section

Configure Service Account for identifying the Compute instance

The compute instance created by this submodule will need to download SAP APP DRfrom a GCS bucket in order install it. Follow the instructions below to ensure a successful installation:

  1. Create a new service account
  2. Grant this new service account the following permissions on the bucket where you uploaded SAP APP DRinstallation file:
    • Storage Object Viewer: roles/storage.objectViewer

You may use the following gcloud command: gcloud projects add-iam-policy-binding <project-id> --member=serviceAccount:<service-account-email> --role=roles/storage.objectViewer

  1. When configuring the module, use this newly created service account's email, to set the service_account_email input variable.

Post deployment script

If you need to run a post deployment script, the script needs to be accessible via a https:// or gs:// URl. The recommended way is to use a GCS Bucket in the following way.:

  1. Upload the post-deployment-script to a GCS bucket.

  2. Grant the following role on the bucket to the service account attached to the instance if the bucket is not in the same project as the service account:

    • Storage Object Viewer: roles/storage.objectViewer

  3. Set the value of the post_deployment_script input to the URI of the post-deployment script storage bucket object, like gs://<bucket_name>/<script_name>.

Inputs

Name Description Type Default Required
address_name Name of static IP adress to add to the instance's access config. string n/a yes
disk_type The GCE data disk type. May be set to pd-standard (for PD HDD) or pd-ssd. string n/a yes
instance_name A unique name for the resource, required by GCE. Changing this forces a new resource to be created. string n/a yes
instance_type The GCE instance/machine type. string n/a yes
network_tags List of network tags to attach to the instance. list n/a yes
pd_ssd_size Persistent disk size in GB string "" no
project_id The ID of the project in which the resources will be deployed. string n/a yes
region Region to deploy the resources. Should be in the same region as the zone. string n/a yes
sap_user Second disk created from snapshot string n/a yes
scs_user Third disk created from snapshot string n/a yes
service_account_email Email of service account to attach to the instance. string n/a yes
snapshot_name_0 First Snapshot name string n/a yes
snapshot_name_1 Second Snapshot name string n/a yes
snapshot_name_2 Third Snapshot name string n/a yes
source_disk_0 First Source Disk string n/a yes
source_disk_1 Second Source Disk string n/a yes
source_disk_2 Third Source Disk string n/a yes
subnetwork The name or self_link of the subnetwork where the isntance will be deployed. The subnetwork must exist in the same region this instance will be created in. string n/a yes
usc_class First disk created from snapshot string n/a yes
zone_1 The zone that the instance should be created in. string n/a yes
zone_2 The zone that the instance should be created in. string n/a yes

Outputs

Name Description
instance_name Name of instance
zone_1 Compute Engine instance deployment zone
zone_2 Compute Engine instance deployment zone