How to Create a custom DISK_TYPES template in Tanzu TAS and TKGI for VMs using the Operations Manager API

Products

• VMware Tanzu Application Service

Issue/Introduction

This article applies to VMware Tanzu Application Service (TAS) for VMs and VMware Tanzu Kubernetes Grid Integrated Edition (TKGI 1.15.x and above).

In some cases, there is a need to create a custom disk_types because the current predefined templates are not the configuration that is required. For example, to create 1.5 TB of disk for the VM.

Environment

Bosh created vms

Cause

Resolution

The following pre-defined disk_type templates available currently in Bosh. The following list is a snapshot taken at the time of writing this article. 
You should execute step 3 below to retrieve the list from your system:

RESPONSE BODY:
{
  "disk_types": [
    {
      "name": "1024",
      "builtin": true,
      "size_mb": 1024
    },
    {
      "name": "2048",
      "builtin": true,
      "size_mb": 2048
    },
    {
      "name": "5120",
      "builtin": true,
      "size_mb": 5120
    },
    {
      "name": "10240",
      "builtin": true,
      "size_mb": 10240
    },
    {
      "name": "20480",
      "builtin": true,
      "size_mb": 20480
    },
    {
      "name": "30720",
      "builtin": true,
      "size_mb": 30720
    },
    {
      "name": "51200",
      "builtin": true,
      "size_mb": 51200
    },
    {
      "name": "76800",
      "builtin": true,
      "size_mb": 76800
    },
    {
      "name": "102400",
      "builtin": true,
      "size_mb": 102400
    },
    {
      "name": "153600",
      "builtin": true,
      "size_mb": 153600
    },
    {
      "name": "204800",
      "builtin": true,
      "size_mb": 204800
    },
    {
      "name": "307200",
      "builtin": true,
      "size_mb": 307200
    },
    {
      "name": "512000",
      "builtin": true,
      "size_mb": 512000
    },
    {
      "name": "768000",
      "builtin": true,
      "size_mb": 768000
    },
    {
      "name": "1048576",
      "builtin": true,
      "size_mb": 1048576
    },
    {
      "name": "2097152",
      "builtin": true,
      "size_mb": 2097152
    },
    {
      "name": "3145728",
      "builtin": true,
      "size_mb": 3145728
    },
    {
      "name": "4194304",
      "builtin": true,
      "size_mb": 4194304
    },
    {
      "name": "6291456",
      "builtin": true,
      "size_mb": 6291456
    },
    {
      "name": "8388608",
      "builtin": true,
      "size_mb": 8388608
    },
    {
      "name": "10485760",
      "builtin": true,
      "size_mb": 10485760
    },
    {
      "name": "12582912",
      "builtin": true,
      "size_mb": 12582912
    },
    {
      "name": "14680064",
      "builtin": true,
      "size_mb": 14680064
    },
    {
      "name": "16777216",
      "builtin": true,
      "size_mb": 16777216
    },
    {
      "name": "20971520",
      "builtin": true,
      "size_mb": 20971520
    },
    {
      "name": "25165824",
      "builtin": true,
      "size_mb": 25165824
    },
    {
      "name": "29360128",
      "builtin": true,
      "size_mb": 29360128
    },
    {
      "name": "33554432",
      "builtin": true,
      "size_mb": 33554432
    }

Steps:

1. SSH into Operations Manager VM.

2. Use the UAAC command to target your Operations Manager and generate a token:

uaac target https://<OpsMan-Hostname>/uaa

uaac token owner get

In the case of SAML integration, please follow the procedure below:

uaac token sso get 

3. Use the following command to retrieve the existing pre-loaded disk_types:

uaac curl https://OPSMAN_FQDN/api/v0/disk_types -k

4. Store the output of the above command, which is only the value of RESPONSE BODY and not anything else as shown below: 

RESPONSE BODY:
{
  "disk_types": [
    {
      "name": "1024",
      "builtin": true,
      "size_mb": 1024
    },
.............
.............
]
}

5. Add custom vm_type with the desired specification at the bottom of the above output and use it with the following command:

uaac curl https://OPSMAN_FQDN/api/v0/disk_types -X PUT -H "Authorization: Bearer $TOKEN"  -H "Content-Type: application/json" -k -d '{   
  "disk_types": [
...........
    {
      "name": "custom_1-5",
      "size_mb": 1572864
    },
............
  ]
}

Once you run the command you should receive a 200 Ok responce.  Then, to confirm the type was added successfully, go to TAS tile --> Resource Config --> Check Disk types available in the list. 

When creating custom disk types, you can modify its name to describe the type, for example "name": "custom_1-5". The name shown in Resource config by default is Integer value and name 1 TB - custom_1-5

Additional Information

KB to edit VM_TYPES  https://knowledge.broadcom.com/external/article/297413/how-to-create-or-remove-a-custom-vmtype.html