Creating an HTTP router for HTTP traffic

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. See the description of the CLI command to create an HTTP router:

   yc alb http-router create --help
   

2. Run this command:

   yc alb http-router create <HTTP_router_name>
   

   Result:

   id: a5dcsselagj4********
   name: test-http-router
   folder_id: aoerb349v3h4********
   created_at: "2021-02-11T21:04:59.438292069Z"
   

3. View a description of the CLI command for creating a virtual host:

   yc alb virtual-host create --help
   

4. Create a virtual host, specifying the name of the HTTP router and the virtual host settings:

   yc alb virtual-host create <virtual_host_name> \
     --http-router-name <HTTP_router_name> \
     --authority your-domain.foo.com \
     --modify-request-header name=Accept-Language,append=ru-RU \
     --security-profile-id <security_profile_ID>
   

   Where:

   • --http-router-name: HTTP router name.
   • --authority: Domains for the Host and authority headers that will be associated with this virtual host. This parameter supports wildcards, e.g., *.foo.com or *-bar.foo.com.
   • --modify-request-header: Request header modification settings:
     • name: Name of the header being modified.
     • append: String to add to the header value.
   • --security-profile-id (optional): ID of the Yandex Smart Web Security security profile.

   Result:

   name: test-virtual-host
   authority:
   - your-domain.foo.com
   modify_request_headers:
   - name: Accept-Language
     append: ru-RU
   

5. View a description of the CLI command for adding a host:

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

6. Add a route, specifying the HTTP router ID or name and the routing parameters:

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

   Where:

   • --virtual-host-name: Virtual host name.

   • --http-router-name: HTTP router name.

   • --prefix-path-match: Parameter to route all requests with a specific prefix. The parameter should be followed by path /.

     To specify a routing condition, you can also use the following parameters:

     • --exact-path-match to route all requests matching the specified path. The parameter should be followed by /<path>/.
     • --regex-path-match to route all requests that satisfy the RE2 regular expression. The parameter should be followed by /<regular_expression>.

   • --backend-group-name: Backend group name.

   • --request-timeout: Request timeout in seconds.

   • --request-max-timeout: Maximum request idle timeout in seconds.

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

   Result:

   done (1s)
   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
   

Terraform allows you to quickly create a cloud infrastructure in Yandex Cloud and manage it using configuration files. Configuration files store the infrastructure description in the HashiCorp Configuration Language (HCL). Terraform and its providers are distributed under the Business Source License.

For more information about the provider resources, see the documentation on the Terraform website or the mirror.

If you change the configuration files, Terraform automatically detects which part of your configuration is already deployed, and what should be added or removed.

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

1. In the configuration file, specify the parameters of the HTTP router and virtual host:

   resource "yandex_alb_http_router" "tf-router" {
     name          = "<HTTP_router_name>"
     labels        = {
       tf-label    = "tf-label-value"
       empty-label = ""
     }
   }
   
   resource "yandex_alb_virtual_host" "my-virtual-host" {
     name                    = "<virtual_host_name>"
     http_router_id          = yandex_alb_http_router.tf-router.id
     route {
       name                  = "<route_name>"
       http_route {
         http_route_action {
           backend_group_id  = "<backend_group_ID>"
           timeout           = "60s"
         }
       }
     }
     route_options {
       security_profile_id   = "<security_profile_ID>"
     }
   }
   

   Where:

   • yandex_alb_http_router: HTTP router description.

     • name: HTTP router name. The name format is as follows:

       • The name must be from 3 to 63 characters long.
       • It may contain lowercase Latin letters, numbers, and hyphens.
       • The first character must be a letter and the last character cannot be a hyphen.

     • labels: HTTP router labels. Specify a key-value pair.

   • yandex_alb_virtual_host: Virtual host description:

     • name: Virtual host name. The name format is as follows:

       • The name must be from 3 to 63 characters long.
       • It may contain lowercase Latin letters, numbers, and hyphens.
       • The first character must be a letter and the last character cannot be a hyphen.

     • http_router_id: HTTP router ID.

     • route: HTTP router route description:

       • name: Route name.
       • http_route_action: Parameter to specify an action with HTTP traffic.
         • backend_group_id: Backend group ID.
         • timeout: Maximum request idle timeout in seconds.

     • route_options (optional): Additional parameters of the virtual host:

       • security_profile_id: ID of the Yandex Smart Web Security security profile.

   For more information about the parameters of resources used in Terraform, see the provider documentation:

   • yandex_alb_http_router.
   • yandex_alb_virtual_host.

2. Create resources:

   1. In the terminal, change to the folder where you edited the configuration file.

   2. Make sure the configuration file is correct using the command:

      terraform validate
      

      If the configuration is correct, the following message is returned:

      Success! The configuration is valid.
      

   3. Run the command:

      terraform plan
      

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

   4. Apply the configuration changes:

      terraform apply
      

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

   Terraform will create all the required resources. You can check the new resources and their settings using the management console or this CLI command:

   yc alb http-router get <HTTP_router_name>
   

Use the create REST API method for the HttpRouter resource or the HttpRouterService/Create gRPC API call.