https://github.com/epomatti/azure-load-balancer
Azure Load Balancer with Terraform
https://github.com/epomatti/azure-load-balancer
azure azure-loadbalancer azure-nat-gateway azure-security load-balancer nat snat terraform
Last synced: 7 months ago
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Azure Load Balancer with Terraform
- Host: GitHub
- URL: https://github.com/epomatti/azure-load-balancer
- Owner: epomatti
- License: mit
- Created: 2024-12-27T05:04:24.000Z (10 months ago)
- Default Branch: main
- Last Pushed: 2025-02-01T15:03:42.000Z (8 months ago)
- Last Synced: 2025-02-01T16:20:11.790Z (8 months ago)
- Topics: azure, azure-loadbalancer, azure-nat-gateway, azure-security, load-balancer, nat, snat, terraform
- Language: HCL
- Homepage:
- Size: 28.3 KB
- Stars: 0
- Watchers: 1
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Azure Load Balancer
Demo implementation of Azure Load Balancer with Terraform.
> [!NOTE]
> Azure Load Balancer of `Basic` SKU [will be retired][1] in 2025. Use or migrate to `Standard`.
## Setup
Create the variables file:
```sh
cp config/local.auto.tfvars .auto.tfvars
```
Set the required variables:
```terraform
subscription_id = ""
```
Create the virtual machines keys:
```sh
mkdir .keys && ssh-keygen -f .keys/temp_rsa
```
Create the resources:
```sh
terraform init
terraform apply -auto-approve
```
Confirm if the virtual machines have been initiated correctly:
> [!NOTE]
> The NAT Gateway will be created in parallel with the VMs
```sh
cloud-init status
```
## Using the Load Balancer
### Simple HTTP
The solution will be deployed two virtual machines running NGINX.
Simply call the LB public IP and port `80`:
```sh
curl loadbalancer:80
```
This will balance the request across the pool
### Inbound NAT rule
An [inbound NAT rule][2] with port `22` will direct the requests exclusively to VM001.
To use it, SSH using the load balance public IP, instead of the VM.
For this project configuration in particular, the options [TCP rest and idle timeout][3] and [floating IP][4] are enabled.
## Health extension
This project deploys the [Application Health](https://learn.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-health-extension?tabs=rest-api) extensions for [Linux](https://github.com/Azure/applicationhealth-extension-linux).
[1]: https://learn.microsoft.com/en-us/azure/load-balancer/skus
[2]: https://learn.microsoft.com/en-us/azure/load-balancer/inbound-nat-rules
[3]: https://learn.microsoft.com/en-us/azure/load-balancer/load-balancer-tcp-idle-timeout?tabs=tcp-reset-idle-portal
[4]: https://learn.microsoft.com/en-us/azure/load-balancer/load-balancer-floating-ip