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Updating HTTP router parameters

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Updated at October 17, 2024

To update the HTTP router parameters:

  1. In the management console, select the folder where the HTTP router was created.
  2. Select Application Load Balancer.
  3. In the left-hand panel, select HTTP routers.
  4. Click the router name.
  5. Click Edit.
  6. Edit the router, virtual host, or route settings.
  7. At the bottom of the page, click Save.

If you do not 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.

  1. View a description of the CLI command to update a load balancer:

    yc alb http-router update --help

  2. Run the command, indicating the new router parameters:

    yc alb http-router update <HTTP_router_name> --new-name <new_HTTP_router_name>

    Result:

    id: a5dld80l32ed********
name: new-http-router
folder_id: aoe197919j8e********
virtual_hosts:
- name: test-virtual-host
  authority:
  - your-domain.foo.com
  routes:
  - name: test-route
    http:
      match:
        path:
          prefix_match: /
      route:
        backend_group_id: a5d4db973944********
        timeout: 2s
        idle_timeout: 3s
  modify_request_headers:
  - name: Accept-Language
    append: ru-RU
created_at: "2021-02-11T21:31:01.676592016Z"

If you don't have Terraform, install it and configure the Yandex Cloud provider.

  1. Open the Terraform configuration file and edit the fragment with the HTTP router description.

    ...
resource "yandex_alb_http_router" "tf-router" {
  name   = "my-http-router"
  labels = {
    tf-label    = "tf-label-value"
    empty-label = ""
  }
}
...

    For more information about the yandex_alb_http_router resource in Terraform, see the provider documentation.

  2. To add, update, or delete an HTTP router's virtual hosts, use the yandex_alb_virtual_host resource indicating the router in the http_router_id field:

    resource "yandex_alb_virtual_host" "my-virtual-host" {
  name           = "my-virtual-host"
  http_router_id = "${yandex_alb_http_router.tf-router.id}"
  route {
    name = "my-route"
    http_route {
      http_route_action {
        backend_group_id = "${yandex_alb_backend_group.backend-group.id}"
        timeout          = "3s"
      }
    }
  }
}

    For more information about the yandex_alb_virtual_host resource in Terraform, see the provider documentation.

  3. Check the configuration using this command:

    terraform validate

    If the configuration is correct, you will get this message:

    Success! The configuration is valid.

  4. Run this command:

    terraform plan

    The terminal will display a list of resources with parameters. No changes will be made at this step. If the configuration contains any errors, Terraform will point them out.

  5. Apply the configuration changes:

    terraform apply

  6. Confirm the changes: type yes into the terminal and press Enter.

    You can verify the change to the HTTP router using the management console or the following CLI command:

    yc alb http-router get <HTTP_router_ID>

Use the update REST API method for the HttpRouter resource or the HttpRouterService/Update gRPC API call.

Adding a route to a virtual host

To add a new route to an HTTP router's virtual host:

  1. In the management console, select the folder where the HTTP router was created.
  2. Select Application Load Balancer.
  3. In the left-hand panel, select HTTP routers.
  4. Click the router name.
  5. Click Edit.
  6. Click Add route.
  7. Set the route parameters and click Save.

If you do not 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.

See the description of the CLI command for managing virtual hosts:

yc alb virtual-host --help

  • HTTP

    You can add a new route to the beginning, end, or specific position in the host's route list.

    Add a route to the end of a host's route list

    1. View a description of the CLI command for adding a route to the end of a host's route list:

      yc alb virtual-host append-http-route --help

    2. Run this command:

      yc alb virtual-host append-http-route <route_name> \
  --virtual-host-name <virtual_host_name> \
  --http-router-name <HTTP_router_name> \
  --match-http-method <HTTP_method> \
  --exact-path-match / \
  --backend-group-name <backend_group_name> \
  --request-timeout <request_timeout>s \
  --request-idle-timeout <request_idle_timeout>s

      For more information about the yc alb virtual-host append-http-route command parameters, see the CLI reference.

      Result:

      name: test-virtual-host
authority:
- your-domain.foo.com
routes:
- name: test-route
...
- name: test-route-toend
  http:
    match:
      path:
        prefix_match: /
    route:
      backend_group_id: a5d3e9ko2qf0********
      timeout: 2s
      idle_timeout: 3s

    Add a route to the beginning of a host's route list

    1. View a description of the CLI command for adding a route to the beginning of a host's route list:

      yc alb virtual-host prepend-http-route --help

    2. Run this command:

      yc alb virtual-host prepend-http-route <route_name> \
  --virtual-host-name <virtual_host_name> \
  --http-router-name <HTTP_router_name> \
  --match-http-method <HTTP_method> \
  --exact-path-match / \
  --backend-group-name <backend_group_name> \
  --request-timeout <request_timeout>s \
  --request-idle-timeout <request_idle_timeout>s

      For more information about the yc alb virtual-host prepend-http-route command parameters, see the CLI reference.

      Result:

      name: test-virtual-host
authority:
- your-domain.foo.com
routes:
- name: test-route-tostart
  http:
    match:
      http_method:
      - GET
      path:
        exact_match: /
    route:
      backend_group_id: a5d3e9ko2qf0********
      timeout: 2s
      idle_timeout: 3s
- name: test-route
...

    Add a route before a specific route

    1. View a description of the CLI command for adding a route before a specific route:

      yc alb virtual-host insert-http-route --help

    2. Run this command:

      yc alb virtual-host insert-http-route <route_name> \
  --virtual-host-name <virtual_host_name> \
  --before <route_name_to_insert_new_route_before> \
  --http-router-name <HTTP_router_name> \
  --match-http-method <HTTP_method> \
  --exact-path-match / \
  --backend-group-name <backend_group_name> \
  --request-timeout <request_timeout>s \
  --request-idle-timeout <request_idle_timeout>s

      For more information about the yc alb virtual-host insert-http-route command parameters, see the CLI reference.

      Result:

      done (2s)
name: test-virtual-host
authority:
- your-domain.foo.com
routes:
...
- name: test-route-insbefore
  http:
    match:
      http_method:
      - GET
      path:
        exact_match: /
    route:
      backend_group_id: a5d3e9ko2qf0********
      timeout: 2s
      idle_timeout: 3s
- name: test-route
...

    Add a route after a specific route

    1. View a description of the CLI command for adding a new route after a specific route:

      yc alb virtual-host insert-http-route --help

    2. Run this command:

      yc alb virtual-host insert-http-route <route_name> \
  --virtual-host-name <virtual_host_name> \
  --after <route_name_to_insert_new_route_after> \
  --http-router-name <HTTP_router_name> \
  --match-http-method <HTTP_method> \
  --exact-path-match / \
  --backend-group-name <backend_group_name> \
  --request-timeout <request_timeout>s \
  --request-idle-timeout <request_idle_timeout>s

      For more information about the yc alb virtual-host insert-http-route command parameters, see the CLI reference.

      Result:

      done (2s)
name: test-virtual-host
authority:
- your-domain.foo.com
routes:
- name: test-route
...
- name: test-route-insafter
  http:
    match:
      path:
        prefix_match: /
    route:
      backend_group_id: a5d3e9ko2qf0********
      timeout: 2s
      idle_timeout: 3s
...

  • gRPC

    You can add a new route to the beginning, end, or specific position in the host's route list.

    Add a route to the end of a host's route list

    1. View a description of the CLI command for adding a route to the end of a host's route list:

      yc alb virtual-host append-grpc-route --help

    2. Run this command:

      yc alb virtual-host append-grpc-route <route_name> \
  --virtual-host-name <virtual_host_name> \
  --http-router-name <HTTP_router_name> \
  --prefix-fqmn-match /<first_word_in_service_name> \
  --backend-group-name <backend_group_name> \
  --request-max-timeout <timeout>s

      For more information about the yc alb virtual-host append-grpc-route command parameters, see the CLI reference.

      Result:

      name: <virtual_host_name>
authority:
- *
routes:
- name: grpc-route
...
- name: grpc-route-toend
  grpc:
    match:
      fqmn:
       prefix_match: /helloworld
    route:
      backend_group_id: ds7snban2dvn********
      max_timeout: 60s
      auto_host_rewrite: false

    Add a route to the beginning of a host's route list

    1. View a description of the CLI command for adding a route to the beginning of a host's route list:

      yc alb virtual-host prepend-grpc-route --help

    2. Run this command:

      yc alb virtual-host prepend-grpc-route <route_name> \
  --virtual-host-name <virtual_host_name> \
  --http-router-name <HTTP_router_name> \
  --prefix-fqmn-match /<first_word_in_service_name> \
  --backend-group-name <backend_group_name> \
  --request-max-timeout <timeout>s

      For more information about the yc alb virtual-host prepend-grpc-route command parameters, see the CLI reference.

      Result:

      name: <virtual_host_name>
authority:
- *
routes:
- name: grpc-route-tostart
  grpc:
    match:
      fqmn:
       prefix_match: /helloworld
    route:
      backend_group_id: ds7snban2dvn********
      max_timeout: 60s
      auto_host_rewrite: false
- name: grpc-route
...

    Add a route before a specific route

    1. View a description of the CLI command for adding a route before a specific route:

      yc alb virtual-host insert-grpc-route --help

    2. Run this command:

      yc alb virtual-host insert-grpc-route <route_name> \
  --virtual-host-name <virtual_host_name> \
  --before <route_name> \
  --http-router-name <HTTP_router_name> \
  --prefix-fqmn-match /<first_word> \
  --backend-group-name <backend_group_name> \
  --request-max-timeout <timeout>s

      Where:

      • --virtual-host-name: Name of the virtual host to add a route to.
      • --before: Name of the route to follow the new route.
      • --http-router-name: HTTP router name.
      • --prefix-fqmn-match: First word in the service name.
      • --backend-group-name: Name of the backend group.
      • --request-max-timeout: Timeout in seconds.

      For more information about the yc alb virtual-host insert-grpc-route command parameters, see the CLI reference.

      Result:

      name: grpc-host
authority:
- *
routes:
...
- name: grpc-route-before
  grpc:
    match:
      fqmn:
       prefix_match: /helloworld
    route:
      backend_group_id: ds7snban2dvn********
      max_timeout: 60s
      auto_host_rewrite: false
- name: grpc-route
...

    Add a route after a specific route

    1. View a description of the CLI command for adding a new route after a specific route:

      yc alb virtual-host insert-grpc-route --help

    2. Run this command:

      yc alb virtual-host insert-grpc-route <route_name> \
  --virtual-host-name <virtual_host_name> \
  --after <route_name> \
  --http-router-name <HTTP_router_name> \
  --prefix-fqmn-match /<first_word> \
  --backend-group-name <backend_group_name> \
  --request-max-timeout <timeout>s

      Where:

      • --virtual-host-name: Name of the virtual host to add a route to.
      • --after: Name of the route to precede the new route.
      • --http-router-name: HTTP router name.
      • --prefix-fqmn-match: First word in the service name.
      • --backend-group-name: Name of the backend group.
      • --request-max-timeout: Timeout in seconds.

      For more information about the yc alb virtual-host insert-grpc-route command parameters, see the CLI reference.

      Result:

      name: grpc-host
authority:
- *
routes:
...
- name: grpc-route
...
- name: grpc-route-after
   grpc:
  match:
     fqmn:
     prefix_match: /helloworld
  route:
     backend_group_id: ds7snban2dvn********
     max_timeout: 60s
     auto_host_rewrite: false
...

If you don't have Terraform, install it and configure the Yandex Cloud provider.

  1. Open the Terraform configuration file and edit the fragment with the virtual host description by adding the route section:

    resource "yandex_alb_virtual_host" "my-virtual-host" {
  name           = "my-virtual-host"
  http_router_id = "${yandex_alb_http_router.tf-router.id}"
  route {
    name = "my-route"
    http_route {
      http_route_action {
        backend_group_id = "${yandex_alb_backend_group.backend-group.id}"
        timeout          = "3s"
      }
    }
  }
}

    For more information about the yandex_alb_virtual_host resource in Terraform, see the provider documentation.

    The sequence of routes inside a virtual host description matters. For more information, see the concept.

  2. Check the configuration using this command:

    terraform validate

    If the configuration is correct, you will get this message:

    Success! The configuration is valid.

  3. Run this command:

    terraform plan

    The terminal will display a list of resources with parameters. No changes will be made at this step. If the configuration contains any errors, Terraform will point them out.

  4. Apply the configuration changes:

    terraform apply

  5. Confirm the changes: type yes into the terminal and press Enter.

    You can verify the change to the virtual host using the management console or the following CLI command:

    yc alb virtual-host get <virtual_host_ID>

Use the update REST API method for the VirtualHost resource or the VirtualHostService/Update gRPC API call.

Change route order in the virtual host

To change the order of HTTP router routes:

  1. In the management console, select the folder where the HTTP router was created.
  2. Select Application Load Balancer.
  3. In the left-hand panel, select HTTP routers.
  4. Click the router name.
  5. Click Edit.
  6. Click Sort.
  7. In the window that opens, drag the route to a new position in the list.
  8. Click Save.
  9. Finish editing the router and click Save.

  • HTTP

    1. View a description of the CLI route delete command:

      yc application-load-balancer virtual-host remove-http-route --help

    2. Delete the route:

      yc alb virtual-host remove-http-route <route_name> \
  --virtual-host-name <virtual_host_name> \
  --http-router-name <router_name>

    3. Add the route to a desired position using one of the ways described above.

  • gRPC

    1. View a description of the CLI route delete command:

      yc application-load-balancer virtual-host remove-gRPC-route --help

    2. Delete the route:

      yc alb virtual-host remove-grpc-route <route_name> \
  --virtual-host-name <virtual_host_name> \
  --http-router-name  <router_name>

    3. Add the route to a desired position using one of the ways described above.

Use the update REST API method for the VirtualHost resource or the VirtualHostService/Update gRPC API call.

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Getting information about an HTTP router
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Deleting an HTTP router