Creating Application Load Balancer infrastructure through a wizard

Yandex Application Load Balancer enables distributing requests across backends of your network applications and terminating TLS encryption. Application Load Balancer runs at Layer 7 of the OSI model using HTTP and HTTPS.

This guide will help you deploy the Application Load Balancer infrastructure and set up traffic to the test application backend.

Below, you can see how to create an infrastructure using a wizard. You can also create all components one by one.

Getting startedGetting started

1. Log in or sign up to the management console. If not signed up yet, navigate to the management console and follow the instructions.
2. On the Billing page, make sure you have a billing account linked and it has the ACTIVE or TRIAL_ACTIVE status. If you do not have a billing account yet, create one.
3. If you do not have a folder yet, create one. While creating a folder, you can also create a default virtual network with subnets in all availability zones.

Create a VM and launch a test web server on itCreate a VM and launch a test web server on it

1. Create a virtual machine named test-vm1 from the Ubuntu 24.04 public image in the ru-central1-a availability zone.

2. Connect to the VM over SSH.

   If you have the Yandex Cloud command line interface installed, you can connect to the VM via OS Login:

   yc compute ssh --name test-vm1
   

3. Start a test web server that will respond to requests at port 8080:

   mkdir test-server; echo 'HELLO' > test-server/hello.txt; python3 -m http.server -d test-server 8080
   

4. Make sure the web server returns a list of folders in the test-server folder. Open the terminal on your computer and run this command:

   curl --verbose <VM_public_IP_address>:8080
   

Create Application Load Balancer infrastructureCreate Application Load Balancer infrastructure

Target group settingsTarget group settings

Your application backends will be deployed on the VM instance of the target group. The target group will be connected to the load balancer so that requests might be sent to the backend endpoints of your application.

In this example, we will assume there is only one VM in the target group.

Backend group settingsBackend group settings

Backend groups contain settings for traffic balancing and target resource health check. The wizard automatically creates one backend and one health check group. It will also select the group you created at the previous step as target group.

HTTP router settingsHTTP router settings

HTTP routers define the rules for routing requests sent to backends and allow you to modify requests directly in the balancer. The wizard will automatically create a virtual host and routing rule. It will also select the group you created at the previous step as backend group.

L7 load balancer settingsL7 load balancer settings

A load balancer receives requests and distributes them across target group VMs according to the rules specified in the HTTP router. Load balancers use listeners to receive traffic. The wizard will create a listener automatically. It will also select the router you created at the previous step as HTTP router.

As an example, let's create a balancer with a node in the same subnet and same availability zone.

Test the load balancerTest the load balancer

In the terminal, run the following command:

curl --verbose <load_balancer_public_IP_address>:80

The response must return the HTTP status code 200 and an HTML list of folders from the test VM folder.

After that, you can add other VMs to the target group, create new backends for your application, and build routes to the application endpoints.

How to delete the resources you createdHow to delete the resources you created

To stop paying for the resources you created, delete them in the following order: