Create a backend group

To create a backend group, add a backend to it and set up a health check:

Management console

CLI

In the management console, select the folder where the backend group will be created.
In the list of services, select Application Load Balancer.
In the left menu, select Backend groups.
Click Create backend group.
Enter the backend group name: test-backend-group.
Under Backends, click Add. Specify the backend settings:
1. Enter the backend name: test-backend-1.
2. Set the weight of the backend: 1.
3. In the Target group list, select test-target-group.
4. Set the Port: 80.
Expand the Load balancing settings field and set the parameters:
1. Threshold for panic mode: 90.
2. **Locality aware routing **: 90.
Expand the Protocol settings field and set the parameters:
1. Select the type: HTTP.
Click Add health check and configure the check:
1. Timeout: 1.
2. Interval: 1.
3. Healthy threshold: 3.
4. Unhealthy threshold: 10.
5. Type: HTTP.
6. Path: /.
Click Create.

If you don't have the Yandex.Cloud command line interface yet, install and initialize it.

The folder specified in the CLI profile is used by default. You can specify a different folder using the --folder-name or --folder-id parameter.

View a description of the CLI command to create a backend group:
```
yc alb backend-group create --help
```

Create a backend group by running the command:

yc alb backend-group create test-backend-group

Command execution result:

id: a5dg2cv4ngne8575fb1p
name: test-backend-group
folder_id: aoerb349v3h4bupphtaf

Add a backend and health check to the group:

yc application-load-balancer backend-group add-http-backend \
--backend-group-name test-backend-group \
--name backend1 \
--weight 1 \
--port 80 \
--target-group-id=a5d751meibht4ev264pp \
--panic-threshold 90
--http-health-check port=80,healthy-threshold=10,unhealthy-threshold=15,timeout=10s,interval=2s,host=your-host.com,path=/ping

Command execution result:

id: a5dg2cv4ngne8575fb1p
name: test-backend-group
folder_id: aoerb349v3h4bupphtaf
http:
  backends:
  - name: backend1
    backend_weight: "1"
    load_balancing_config:
      panic_threshold: "90"
    port: "80"
    target_groups:
      target_group_ids:
      - a5d751meibht4ev264pp
    healthchecks:
    - timeout: 10s
      interval: 2s
      healthy_threshold: "10"
      unhealthy_threshold: "15"
      healthcheck_port: "80"
      http:
        host: your-host.com
        path: /ping