ansible to provision azure loadbalncer with private ip - azure

Question

I was trying to provision an Azure load-balancer with only a private IP address in an existing subnet. I could accomplish this with the below code.
- name: create load balancer
azure_rm_loadbalancer:
resource_group: "{{resource_group_name}}"
name: my_new_lb
frontend_ip_configurations:
- name: frontendipconf0
private_ip_address:
private_ip_allocation_method: dynamic
subnet: /subscriptions/1234445sdffew11111111/resourceGroups/RG_NAME/providers/Microsoft.Network/virtualNetworks/vnet-stage/subnets/default
backend_address_pools:
- name: backend_pool1
probes:
- name: prob0
port: 80
load_balancing_rules:
- name: lbrbalancingrule0
frontend_ip_configuration: frontendipconf0
backend_address_pool: backend_pool1
frontend_port: 8000
backend_port: 443
probe: prob0
But is there a way we can provision a loadbalancer without providing a complete subnet id in the task file?

Answer 1

I could resolve the issue with the help of azure_rm_resource_info as well. Adding the script below.
azure_rm_resource_info:
api_version: '2018-08-01'
resource_group: "{{ resource_group_name }}"
provider: network
resource_type: virtualnetworks
resource_name: "{{ vnet_name }}"
subresource:
- type: subnets
name: "{{ subnet_name }}"
register: subnet
- name: create load balancer
azure_rm_loadbalancer:
resource_group: "{{resource_group_name}}"
name: lb_name
frontend_ip_configurations:
- name: frontendipconf0
private_ip_address:
private_ip_allocation_method: dynamic
subnet: "{{subnet.response[0].id }}"

Answer 2

If you want to provision the load balancer with a private IP address, then you must associate a subnet to the load balancer, so I think an existing subnet resource id is necessary. It's impossible not to provide a complete subnet id in the task file.
Update:
Here is the example to get the virtual network info:
- name: Get the Load Balancer info
azure_rm_virtualnetwork_info:
resource_group: "{{ resource_group_name }}"
name: "{{ vnet_name }}"
register: vnet
Then you can input the subnet id in the load balancer like this:
subnet: "{{ vnet.virtualnetworks[0].subnets[0].id }}"
You can get the VNet info and change the subnet you want to use. Please read the azure_rm_virtualnetwork_info example carefully.