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Terraform for SAP HANA for Google Cloud

This template follows the documented steps https://cloud.google.com/solutions/sap/docs/certifications-sap-hana and deploys GCP and Pacemaker resources up to the installation of SAP's central services.

Set up Terraform

Install Terraform on the machine you would like to use to deploy from by following https://learn.hashicorp.com/tutorials/terraform/install-cli?in=terraform/gcp-get-started#install-terraform

How to deploy

  1. Download .tf file into an empty directory curl https://storage.googleapis.com/cloudsapdeploy/terraform/latest/terraform/sap_hana/terraform/sap_hana.tf -o sap_hana.tf

  2. Fill in mandatory variables and if the desired optional variable in the .tf file.

  3. Deploy

    1. Run terraform init (only needed once)
    2. Run terraform plan to see what is going to be deployed. Verify if names, zones, sizes, etc. are as desired.
    3. Run terrafom apply to deploy the resources
    4. Run terrafom destroy to remove the resources

  4. Continue installation of SAP software and setup of remaining cluster resources as per documentation at https://cloud.google.com/solutions/sap/docs/sap-hana-deployment-guide-tf

Additional information

For additional information see https://www.terraform.io/docs/index.html and https://cloud.google.com/docs/terraform

Inputs

Name Description Type Default Required
backup_disk_iops_override Warning, do not use unless instructed or aware of the implications of using this setting. Directly sets the number of IOPS that the backup disk(s) will use. Has no effect if not using a disk type that supports it. number null no
backup_disk_throughput_override Warning, do not use unless instructed or aware of the implications of using this setting. Directly sets the throughput in MB/s that the backup disk(s) will use. Has no effect if not using a disk type that supports it. number null no
backup_disk_type Optional - The default is pd-ssd, except for machines that do not support PD, in which case the default is hyperdisk-extreme. Only used if a backup disk is needed. string "" no
can_ip_forward Whether sending and receiving of packets with non-matching source or destination IPs is allowed. bool true no
data_disk_iops_override Warning, do not use unless instructed or aware of the implications of using this setting. Directly sets the number of IOPS that the data disk(s) will use. Has no effect if not using a disk type that supports it. number null no
data_disk_size_override Warning, do not use unless instructed or aware of the implications of using this setting. Overrides the default size for the data disk(s), that is based off of the machine_type. number null no
data_disk_throughput_override Warning, do not use unless instructed or aware of the implications of using this setting. Directly sets the throughput in MB/s that the data disk(s) will use. Has no effect if not using a disk type that supports it. number null no
data_disk_type_override Warning, do not use unless instructed or aware of the implications of using this setting. Override the 'default_disk_type' for the data disk. string "" no
data_stripe_size Optional - default is 256k. Stripe size for data volume striping (if enable_data_striping = true). string "256k" no
disk_type Optional - The default disk type to use for disk(s) containing log and data volumes. The default is pd-ssd, except for machines that do not support PD, in which case the default is hyperdisk-extreme. Not all disk are supported on all machine types - see https://cloud.google.com/compute/docs/disks/ for details. string "" no
enable_data_striping Optional - default is false. Enable LVM striping of data volume across multiple disks. bool false no
enable_fast_restart Optional - The default is true. If set enables HANA Fast Restart. bool true no
enable_log_striping Optional - default is false. Enable LVM striping of log volume across multiple disks. bool false no
hyperdisk_balanced_iops_default Optional - default is 3000. Number of IOPS that is set for each disk of type Hyperdisk-balanced (except for boot/usrsap/shared disks). number 3000 no
hyperdisk_balanced_throughput_default Optional - default is 750. Throughput in MB/s that is set for each disk of type Hyperdisk-balanced (except for boot/usrsap/shared disks). number 750 no
include_backup_disk Optional - The default is true. If set creates a disk for backups. bool true no
instance_name Hostname of the GCE instance. string n/a yes
linux_image Linux image name to use. string n/a yes
linux_image_project The project which the Linux image belongs to. string n/a yes
log_disk_iops_override Warning, do not use unless instructed or aware of the implications of using this setting. Directly sets the number of IOPS that the log disk(s) will use. Has no effect if not using a disk type that supports it. number null no
log_disk_size_override Warning, do not use unless instructed or aware of the implications of using this setting. Overrides the default size for the log disk(s), that is based off of the machine_type. number null no
log_disk_throughput_override Warning, do not use unless instructed or aware of the implications of using this setting. Directly sets the throughput in MB/s that the log disk(s) will use. Has no effect if not using a disk type that supports it. number null no
log_disk_type_override Warning, do not use unless instructed or aware of the implications of using this setting. Override the 'default_disk_type' for the log disk. string "" no
log_stripe_size Optional - default is 64k. Stripe size for log volume striping (if enable_log_striping = true). string "64k" no
machine_type Machine type for the instances. string n/a yes
network_tags OPTIONAL - Network tags can be associated to your instance on deployment. This can be used for firewalling or routing purposes. list(string) [] no
nic_type Optional - This value determines the type of NIC to use, valid options are GVNIC and VIRTIO_NET. If choosing GVNIC make sure that it is supported by your OS choice here https://cloud.google.com/compute/docs/images/os-details#networking. string "" no
number_data_disks Optional - default is 2. Number of disks to use for data volume striping (if enable_data_striping = true). number 2 no
number_log_disks Optional - default is 2. Number of disks to use for log volume striping (if enable_log_striping = true). number 2 no
post_deployment_script OPTIONAL - gs:// or https:// location of a script to execute on the created VM's post deployment. string "" no
primary_startup_url Startup script to be executed when the VM boots, should not be overridden. string `"curl -s https://storage.googleapis.com/cloudsapdeploy/terraform/latest/terraform/sap_hana/hana_startup.sh bash -s https://storage.googleapis.com/cloudsapdeploy/terraform/latest/terraform"`
project_id Project id where the instances will be created. string n/a yes
public_ip OPTIONAL - Defines whether a public IP address should be added to your VM. By default this is set to Yes. Note that if you set this to No without appropriate network nat and tags in place, there will be no route to the internet and thus the installation will fail. bool true no
reservation_name Use a reservation specified by RESERVATION_NAME.
By default ANY_RESERVATION is used when this variable is empty.
In order for a reservation to be used it must be created with the
"Select specific reservation" selected (specificReservationRequired set to true)
Be sure to create your reservation with the correct Min CPU Platform for the
following instance types:
n1-highmem-32 : Intel Broadwell
n1-highmem-64 : Intel Broadwell
n1-highmem-96 : Intel Skylake
n1-megamem-96 : Intel Skylake
m1-megamem-96 : Intel Skylake
All other instance types can have automatic Min CPU Platform"		 string "" no
sap_deployment_debug OPTIONAL - If this value is set to true, the deployment will generates verbose deployment logs. Only turn this setting on if a Google support engineer asks you to enable debugging. bool false no
sap_hana_backup_nfs NFS endpoint for /hanabackup storage. string "" no
sap_hana_backup_nfs_resource NFS resource to be used as the backup drive instead of a disk. This and sap_hana_backup_nfs may not both be set. 
object({
    networks = list(
      object({
        ip_addresses = list(string)
      })
    )
    file_shares = list(
      object({
        name = string
      })
    )

  })
 null no
sap_hana_backup_size Size in GB of the /hanabackup volume. If this is not set or set to zero, the GCE instance will be provisioned with a hana backup volume of 2 times the total memory. If sap_hana_backup_nfs is set, this setting is ignored. number 0 no
sap_hana_deployment_bucket The Cloud Storage path that contains the SAP HANA media, do not include gs://. If this is not defined, the GCE instance will be provisioned without SAP HANA installed. string "" no
sap_hana_instance_number The SAP instance number. If this is not defined, the GCE instance will be provisioned without SAP HANA installed. number 0 no
sap_hana_sapsys_gid The Linux GID of the SAPSYS group. By default this is set to 79 number 79 no
sap_hana_scaleout_nodes Number of additional nodes to add. E.g - if you wish for a 4 node cluster you would specify 3 here. number 0 no
sap_hana_shared_nfs NFS endpoint for /hana/shared storage. string "" no
sap_hana_shared_nfs_resource NFS resource to be used as the shared drive instead of a disk. This and sap_hana_shared_nfs may not both be set. 
object({
    networks = list(
      object({
        ip_addresses = list(string)
      })
    )
    file_shares = list(
      object({
        name = string
      })
    )

  })
 null no
sap_hana_sid The SAP HANA SID. If this is not defined, the GCE instance will be provisioned without SAP HANA installed. SID must adhere to SAP standard (Three letters or numbers and start with a letter) string n/a yes
sap_hana_sidadm_password The linux sidadm login password. If this is not defined, the GCE instance will be provisioned without SAP HANA installed. Minimum requirement is 8 characters. string "" no
sap_hana_sidadm_password_secret The secret key used to retrieve the linux sidadm login from Secret Manager (https://cloud.google.com/secret-manager). The Secret Manager password will overwrite the clear text password from sap_hana_sidadm_password if both are set. string "" no
sap_hana_sidadm_uid The Linux UID of the adm user. By default this is set to 900 to avoid conflicting with other OS users. number 900 no
sap_hana_system_password The SAP HANA SYSTEM password. If this is not defined, the GCE instance will be provisioned without SAP HANA installed. Minimum requirement is 8 characters with at least 1 number. string "" no
sap_hana_system_password_secret The secret key used to retrieve the SAP HANA SYSTEM login from Secret Manager (https://cloud.google.com/secret-manager). The Secret Manager password will overwrite the clear text password from sap_hana_system_password if both are set. string "" no
secondary_startup_url DO NOT USE string `"curl -s https://storage.googleapis.com/cloudsapdeploy/terraform/latest/terraform/sap_hana/hana_startup_secondary.sh bash -s https://storage.googleapis.com/cloudsapdeploy/terraform/latest/terraform"`
service_account OPTIONAL - Ability to define a custom service account instead of using the default project service account. string "" no
shared_disk_iops_override Warning, do not use unless instructed or aware of the implications of using this setting. Directly sets the number of IOPS that the shared disk will use. Has no effect if not using a disk type that supports it. number null no
shared_disk_size_override Warning, do not use unless instructed or aware of the implications of using this setting. Overrides the default size for the shared disk, that is based off of the machine_type. number null no
shared_disk_throughput_override Warning, do not use unless instructed or aware of the implications of using this setting. Directly sets the throughput in MB/s that the shared disk will use. Has no effect if not using a disk type that supports it. number null no
shared_disk_type_override Warning, do not use unless instructed or aware of the implications of using this setting. Override the 'default_disk_type' for the shared disk. string "" no
subnetwork The sub network to deploy the instance in. string n/a yes
unified_disk_iops_override Warning, do not use unless instructed or aware of the implications of using this setting. Directly sets the number of IOPS that the primary's unified disk will use. Has no effect if not using a disk type that supports it. number null no
unified_disk_size_override Warning, do not use unless instructed or aware of the implications of using this setting. Overrides the default size for the primary's unified disk, that is based off of the machine_type. number null no
unified_disk_throughput_override Warning, do not use unless instructed or aware of the implications of using this setting. Directly sets the throughput in MB/s that the primary's unified disk will use. Has no effect if not using a disk type that supports it. number null no
unified_worker_disk_iops_override Warning, do not use unless instructed or aware of the implications of using this setting. Directly sets the number of IOPS that the unified worker disk(s) will use. Has no effect if not using a disk type that supports it. number null no
unified_worker_disk_size_override Warning, do not use unless instructed or aware of the implications of using this setting. Overrides the default size for the unified worker disk(s), that is based off of the machine_type. number null no
unified_worker_disk_throughput_override Warning, do not use unless instructed or aware of the implications of using this setting. Directly sets the throughput in MB/s that the unified worker disk(s) will use. Has no effect if not using a disk type that supports it. number null no
use_single_shared_data_log_disk Optional - By default three separate disk for data, logs, and shared will be made. If set to true, one disk will be used instead. bool false no
usrsap_disk_iops_override Warning, do not use unless instructed or aware of the implications of using this setting. Directly sets the number of IOPS that the /usr/sap disk(s) will use. Has no effect if not using a disk type that supports it. number null no
usrsap_disk_size_override Warning, do not use unless instructed or aware of the implications of using this setting. Overrides the default size for the /usr/sap disk(s), that is based off of the machine_type. number null no
usrsap_disk_throughput_override Warning, do not use unless instructed or aware of the implications of using this setting. Directly sets the throughput in MB/s that the /usr/sap disk(s) will use. Has no effect if not using a disk type that supports it. number null no
usrsap_disk_type_override Warning, do not use unless instructed or aware of the implications of using this setting. Override the 'default_disk_type' for the /usr/sap disk. string "" no
vm_static_ip Optional - Defines an internal static IP for the VM. string "" no
worker_static_ips Optional - Defines internal static IP addresses for the worker nodes. list(string) [] no
zone Zone where the instances will be created. string n/a yes

Outputs

Name Description
sap_hana_primary_self_link SAP HANA self-link for the primary instance created
sap_hana_worker_self_links SAP HANA self-links for the secondary instances created

Requirements

These sections describe requirements for using this module.

Software

The following dependencies must be available:

Contributing

Refer to the contribution guidelines for information on contributing to this module.

Security Disclosures

Please see our security disclosure process.