Using SUSE and Fortinet automation to deploy a secured SAP landscape on Azure Cloud Platform #

The architecture for the deployment is similar to the one below:

Figure 1: Azure Automation Architecture #

 

The project performs the following actions:

If an HA scenario is chosen, the following actions are performed in addition:

The minimum requirements to get started are

The overall process is visualized in the figure below:

Figure 2: Workflow of the Automation #

 

Note

The project uses PAYG images by default. This means there is no need for subscriptions or license files to provide for an easy start. But you can use BYOS/BYOL, too. The required changes are mentioned in the tfvars example files.

$ terraform -v
Terraform v1.0.0
on linux_amd64

3.3 Preparing the SAP media #

 

With the correct entitlement, SAP media can be downloaded from the SAP Web site at https://support.sap.com/en/my-support/software-downloads.html. Make the SAP Media available to be accessed during the deployment.

The SUSE Automation for SAP Applications project allows for three methods for presenting the SAP media:

1. SAR file and SAPCAR executable (SAP HANA Database only)

2. Multipart exe/RAR files

3. Extracted media

The different formats have some benefits and drawbacks:

1. The compressed archives (SAR and RAR) provide a simple copy to the cloud but a longer install time because of extracting them during the process.

2. The uncompressed/extracted media are the fastest installation method. However, as more files are copied to the cloud share, this also takes time beforehand during preparation.

Here in the example, we use the compressed archives for the installation (exe/RAR) as this is the easiest method to download and upload to the cloud share.

This guide uses the most recent SAP HANA media, SAP HANA 2.0 SPS05. The SAP HANA media file name downloaded at the time of creating this guide is 51054623. Follow the SAP instructions to download the SAP HANA media.

Note

Extraction depends on the way used to download the SAP media. If multiple compressed files are downloaded, the official SAP extract tool SAPCAR tool must be used to extract the SAP media.

Extracted SAP Media will contain a lot of extracted files. Depending on your network speed, uploading the extracted SAP media files can take a lot of time. The CSP’s infrastructure usually provides a good network speed. But if you encounter problems, a viable workaround would be to create a workstation machine in the cloud to download/upload the SAP media.

Also, have a look at how far away your share for the SAP media is from the region where you install the machines - it should preferably be the same region.

Tip

It is good practice to have the SAP Media versioned on the cloud share to build a library for automatic installs and (re)deployments. Thus, give some thought to your SAP media structure in advance.

As an example, see below how a full SAP application media tree (in a compressed format) for an S/4HANA version 1809 installation could look like:

<FS>/s4hana1809
       ├SWPM_CD
       │  ├SWPM20SP07_5-80003424.SAR
       │  └SAPCAR_721-20010450.EXE
       │
       ├EXP_CD
       │  ├S4CORE104_INST_EXPORT_1.zip
       │  ├S4CORE104_INST_EXPORT_2.zip
       │  └...
       ├DBCLIENT_CD
       │  └IMDB_CLIENT20_005_111-80002082.SAR
       ├BASKET_CD
       │   ├SAPHOSTAGENT24_24-20009394.SAR
       │   ├igshelper_4-10010245.sar
       │   ├igsexe_1-80001746.sar
       │   ├SAPEXEDB_400-80000698.SAR
       │   └SAPEXE_400-80000699.SAR
       └HANA
          ├51053061_part1.exe
          ├51053061_part2.rar
          ├51053061_part3.rar
          └51053061_part4.rar


 HANA       : contains the HANA Database install
 BASKET_ CD : contains SAP kernel, patch + more like hostagent.
 DBCLIENT_CD: contains the package corresponding to DB CLIENT, e.g HANA
 EXP_CD     : contains the package corresponding to EXPORT files
 SWPM_CD    : must contain the .exe file corresponding to SAPCAR and the
              .sar file corresponding to SWPM.
              The file suffix must be .exe and .sar.

The next steps explain an example for a simple HANA install download.

For Azure, an Azure File Share is used to host the SAP media.

Using the Azure Portal or the Azure CLI, perform the following actions:

• Create a storage account.

• Create a directory within the Storage Account, for example mysapmedia.

• Upload the SAP media files to the Storage Account.

You will later need the Storage Account name and one key as password for the Terraform run.

3.4 Downloading and configuring the Automation code #

 

The SUSE and Fortinet SAP Automation code is published in GitHub.

The following command will clone the project to the Cloud Shell ready for configuration:

$ git clone --depth 1 https://github.com/Project-Mayerhofen/ha-sap-terraform-deployments.git

The --depth 1 make sure that you only get the latest commits and not the whole history for the project

Note

If the following SSH keys already exist, the next step can be skipped.

Then, generate SSH key pairs to allow for accessing the SAP HANA instances:

#optional if ssh-keys already exist
$ cd ~
$ ssh-keygen -q -t rsa -N '' -f  ~/.ssh/id_rsa

3.4.1 Configuring the deployment options and modifying the Terraform variables #

 

The files that need to be configured are contained in a subdirectory of the project. Use that as the working directory:

The project itself has code for several cloud service providers and virtual infrastructures, but currently the Fortinet addition is only available for Azure. Get in contact with us if you want to see it for others, too.

cd ~/ha-sap-terraform-deployments/azure

A Terraform example template is provided. For a demo environment consisting of a simple SAP Scenario, only a handful of parameters will need to be changed, as most of the possible values come with a useful default as a good and safe starting point.

Copy the Terraform example file to terraform.tfvars:

$ cp terraform.tfvars.example terraform.tfvars

Edit the terraform.tfvars file and modify it as explained below.

As there are many options possible, we will describe only one possible path, which will set up the Fortinet appliances and an HA HANA System and a Netweaver HA system. If you are duplicating the lines before modification, ensure the original is commented out, or the deployment will fail.

Choose the region for the deployment, for example:

# Region where to deploy the configuration
az_region = "westeurope"

The following parameters select the version of SUSE Linux Enterprise Server for SAP Applications to deploy:

Note

The values shown would also be the defaults used. All defaults point to PAYG images for an easy start. So you only need to enable or change the variables if you want something different.

Set this variable to give the deployment a unique name, which will be shown at most resources as suffix, for example:

# The name must be unique among different deployments
deployment_name = "mydev123"

Provide a name for the OS user for the machines:

# Admin user for the created machines
admin_user = "cloudadmin"

If you want to go with the default PAYG image, you do NOT need to change anything here. However, if you want to use a BYOS image, you need to make sure that you provide the subscription key and e-mail to register against SUSE Customer Center (SCC). This requires also that you have not blocked Internet access to reach SCC.

#os_image = "sles-sap-15-sp2:gen2"

Next, enter the path for the public and private SSH keys that were generated earlier. Below is an example using the SSH keys created by default:

# SSH Public key location to configure access to the remote instances
public_key  = "~/.ssh/id_rsa.pub"

# Private SSH Key location
private_key = "~/.ssh/id_rsa"

As the deployment needs a Hub/Spoke network setup, set the following variables:

network_topology = "hub_spoke"
vnet_hub_create = true
bastion_enabled = true
spoke_name = "sap-1"

To use an existing hub/spoke network, have a look at the other examples provided. The deployment with Fortinet requires the hub/spoke architecture.

To keep the cluster architecture and deployment simple and to provide additional packages needed to deploy, uncomment and set the following parameters:

ha_sap_deployment_repo = "https://download.opensuse.org/repositories/network:/ha-clustering:/sap-deployments:/v7/"

Then, enable the pre_deployment parameter:

pre_deployment = true

The Jumphost server (Bastion Host Server) is enabled by default, and provides the public IP address to the database. Otherwise the deployed instances will all get a public IP.

With the Fortinet additon, it is mandatory to have the Bastion Host Server enabled:

bastion_enabled = true

Next, set which SAP HANA instance machine type should be selected. The default is set to some standard types, and you only need to enable and change the variable if you want other sizes.

#hana_vm_size = "Standard_E8s_v3"

Modify the following parameter to point to SAP media that was uploaded to the storage location:

storage_account_name = "YOUR_STORAGE_ACCOUNT_NAME"
storage_account_key = "YOUR_STORAGE_ACCOUNT_KEY"

The "hana_inst_master" needs to be set according to your settings of the file share you created before.

Example:

hana_inst_master = "//YOUR_STORAGE_ACCOUNT_NAME.file.core.windows.net/mysapmedia"

hana_archive_file = "s4hana1809/HANA/{hana_archive_version}.exe"

To create the cluster, you need to set this parameter to true, otherwise only a single system is created.

# Enable system replication and HA cluster
hana_ha_enabled = true

Finally, to ensure a fully automated deployment, it is possible to set passwords within the terraform.tfvars file. Uncomment and set the following parameters to your own value:

hana_master_password = "SAP_Pass123"

Note

If the parameters are not set in the terraform.tfvars file, they must be entered when running the deployment.

Important

All passwords must conform to SAP password policies, or the deployment will fail.

Optional: If a monitoring instance should be a part of the deployment, find and uncomment the following:

monitoring_enabled = true

As you want to deploy a Netweaver scenario, you need a highly available NFS-Share. To build one with Linux, use DRBD and pacemaker:

# Enable drbd cluster
drbd_enabled = true

There is a similar set of variables needed for Netweaver as it was for HANA:

netweaver_enabled = true
netweaver_app_server_count = 2
netweaver_master_password = "SuSE1234x"

The Netweaver product version which should be installed needs to be set via product ID. Have a look at the examples to pick the right one for your deployment:

netweaver_product_id = "NW750.HDB.ABAPHA"

Again, provide the file share for the Netweaver media, which normally are at the same share:

netweaver_storage_account_name = "YOUR_STORAGE_ACCOUNT_NAME
netweaver_storage_account_key = "YOUR_STORAGE_ACCOUNT_KEY"
netweaver_storage_account = "//YOUR_STORAGE_ACCOUNT_NAME.file.core.windows.net/path/to/your/nw/installation/media"

Now define where the directories for the SAP installer are located, relative to the mount point of the Netweaver storage account:

netweaver_sapcar_exe = "your_sapcar_exe_file_path"
netweaver_swpm_sar = "your_swpm_sar_file_path"
netweaver_sapexe_folder   =  "your_download_basket"
netweaver_additional_dvds = ["your_export_folder", "your_hdbclient_folder"]

To additionally deploy the Fortinet services, remember you need to choose a HUB-SPOKE network scenario and enable the flag for Fortinet:

fortinet_enabled=true

You need credentials for the FortiGate instances, too. Ensure to change them to your values:

fortigate_vm_username    = "azureuser"
fortigate_vm_password    = "SuSE1234x"

Do the same for the FortiADC instances:

fortiadc_vm_username    = "azureuser"
fortiadc_vm_password    = "SuSE1234x"

All other values should be set by default and use the PAYG instances of Fortinet.

If you want to use BYOL with your Fortinet services, you need to buy and then copy the Fortinet license files into the directory:

cp *.lic ~/ha-sap-terraform-deployments/azure

Here is an example tfvars file for a Fortinet deployment in the Hub, and an HA NW750 installation with an HA HANA setup in the SPOKE:

az_region = "westeurope"
deployment_name = "psfn6"
admin_user = "cloudadmin"
public_key  = "/home/<YOURUSER>/.ssh/azure.id_rsa.pub"
private_key = "/home/<YOURUSER>.ssh/azure.id_rsa"
cluster_ssh_pub = "salt://sshkeys/cluster.id_rsa.pub"
cluster_ssh_key = "salt://sshkeys/cluster.id_rsa"
network_topology = "hub_spoke"
vnet_hub_create = true
bastion_enabled = true
spoke_name = "sap-1"
ha_sap_deployment_repo = "https://download.opensuse.org/repositories/network:/ha-clustering:/sap-deployments:/devel/"
pre_deployment = true
hana_count = "2"
storage_account_name = "<YOURSTORAGEACCOUNT>"
storage_account_key = "<YOURACCOUNTKEY>"
hana_inst_master = "//YOURSTORAGEACCOUNT>.file.core.windows.net/sapbits/HANA/51054623"
hana_ha_enabled = true
hana_master_password = "xxxxxxxx"
monitoring_enabled = true
drbd_enabled = true
netweaver_enabled = true
netweaver_app_server_count = 2
netweaver_master_password = "xxxxxxxx"
netweaver_ha_enabled = true
netweaver_cluster_fencing_mechanism = "sbd"
netweaver_product_id = "NW750.HDB.ABAPHA"
netweaver_storage_account_name = "<YOURSTORAGEACCOUNT>"
netweaver_storage_account_key = "<YOURACCOUNTKEY>"
netweaver_storage_account = "<YOURSTORAGEACCOUNT>.file.core.windows.net/sapbits"
netweaver_sapcar_exe = "netweaver/SAPCAR"
netweaver_swpm_sar   = "netweaver/SWPM10SP26_6-20009701.SAR"
netweaver_sapexe_folder = "netweaver/kernel_nw75_sar"
netweaver_additional_dvds = ["netweaver/51050829_3", "HANA/51054623/DATA_UNITS/HDB_CLIENT_LINUX_X86_64"]
fortinet_enabled         = true
fortigate_vm_username    = "azureuser"
fortigate_vm_password    = "xxxxxxxxx"
fortiadc_vm_username    = "azureuser"
fortiadc_vm_password    = "xxxxxxxxx"

Note

Here you can see how parts of the Fortinet section look for using BYOL images:

..
fortinet_vm_license_type = "byol"

fortigate_a_license_file = "license_fortigate_a.lic"
fortigate_b_license_file = "license_fortigate_b.lic"
fortigate_os_image = "fortinet:fortinet_fortigate-vm_v5:fortinet_fg-vm:7.0.2"
..
fortinet_enabled         = true
fortigate_vm_username    = "azureuser"
fortigate_vm_password    = "xxxxxxxxx"
fortiadc_vm_username    = "azureuser"
fortiadc_vm_password    = "xxxxxxxxx"
..
fortiadc_a_license_file = "license_fortiadc_a.lic"
fortiadc_b_license_file = "license_fortiadc_b.lic"
fortiadc_os_image = "fortinet:fortinet-fortiadc:fad-vm-byol:6.1.3"
..

3.6 Deploying the project #

 

Terraform will create and name resources when running the deployment based on the "workspace" in use. It is highly recommended to create a unique workspace from which to run the deployment.

$ terraform init
$ terraform plan
$ terraform apply

Tip

The Cloud Shell has a timeout of around 20 minutes and the shell will close if left unattended, resulting in a failed deployment. It is strongly advised to retain focus on the Cloud Shell window to ensure the timeout does not occur, as a full deployment could take nearly four hours.

If successful, the output will be the public IP addresses for the cluster nodes, similar to the output below:

module.netweaver_node.module.netweaver_provision.null_resource.provision[3] (remote-exec): Total states run:     38
module.netweaver_node.module.netweaver_provision.null_resource.provision[3] (remote-exec): Total run time: 6339.329 s
module.netweaver_node.module.netweaver_provision.null_resource.provision[3] (remote-exec): Tue Jan 25 19:12:24 UTC 2022::vmnetweaver04::[INFO] deployment done

Apply complete! Resources: 227 added, 0 changed, 0 destroyed.

Outputs:

bastion_public_ip = "20.2.3.43"
cluster_nodes_ip = [
  [
    "10.74.1.10",
    "10.74.1.11",
  ],
]
cluster_nodes_name = [
  [
    "vmhana01",
    "vmhana02",
  ],
]
cluster_nodes_public_ip = [
  [],
]
cluster_nodes_public_name = [
  [],
]
drbd_ip = [
  "10.74.1.6",
  "10.74.1.7",
]
drbd_name = [
  "vmdrbd01",
  "vmdrbd02",
]
drbd_public_ip = []
drbd_public_name = []
fortiadc_a_url = "https://20.2.3.44:41443"
fortiadc_b_url = "https://20.2.3.44:51443"
fortigate_a_url = "https://20.2.3.41"
fortigate_b_url = "https://20.2.3.42"
fortigate_url = "https://20.2.3.44"
iscsi_srv_ip = [
  "10.74.1.4",
]
iscsisrv_name = [
  "vmiscsi01",
]
iscsisrv_public_ip = []
iscsisrv_public_name = []
monitoring_ip = ""
monitoring_name = ""
monitoring_public_ip = ""
monitoring_public_name = ""
netweaver_ip = [
  "10.74.1.60",
  "10.74.1.61",
  "10.74.1.62",
  "10.74.1.63",
]
netweaver_name = [
  "vmnetweaver01",
  "vmnetweaver02",
  "vmnetweaver03",
  "vmnetweaver04",
]
netweaver_public_ip = []
netweaver_public_name = []

$ terraform destroy

Combining the SUSE SAP automation with an automated Fortinet Security Fabric provisioning results in an architecture which provides added security, optimized connectivity and faster rollout of an SAP landscape in Azure.

To learn more about the capabilities of Using SUSE and Fortinet automation to deploy a secured SAP landscape on Azure Cloud Platform: Getting Started, refer to the following resources:

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