HTTP listeners for VPC Lattice services - Amazon VPC Lattice
PrerequisitesAdd an HTTP listener

HTTP listeners for VPC Lattice services

A listener is a process that checks for connection requests. You can define a listener when you create your VPC Lattice service. You can add listeners to your service at any time.

The information on this page helps you create an HTTP listener for your service. For information about creating listeners that use other protocols, see HTTPS listeners and TLS listeners.

Prerequisites

  • To add a forward action to the default listener rule, you must specify an available VPC Lattice target group. For more information, see Create a VPC Lattice target group.

  • You can specify the same target group in multiple listeners, but these listeners must belong to the same service. To use a target group with a VPC Lattice service, you must verify that it is not used by a listener for any other VPC Lattice service.

Add an HTTP listener

You can add listeners and rules to your service at any time. You configure a listener with a protocol and a port for connections from clients to the service, and a VPC Lattice target group for the default listener rule. For more information, see Listener configuration.

To add an HTTP listener using the console

  1. Open the Amazon VPC console at https://console.aws.amazon.com/vpc/.

  2. In the navigation pane, under VPC Lattice, choose Services.

  3. Select the name of the service to open its details page.

  4. On the Routing tab, choose Add listener.

  5. For Listener name, you can either provide a custom listener name, or use the protocol and port of your listener as the listener name. A custom name that you specify can have up to 63 characters, and it must be unique for every service in your account. The valid characters are a-z, 0-9, and hyphens (-). You can't use a hyphen as the first or last character, or immediately after another hyphen. You cannot change the name after you create it.

  6. For Protocol : port, choose HTTP and enter a port number.

  7. For Default action, choose the VPC Lattice target group to receive traffic and choose the weight to assign to this target group. The weight that you assign to a target group sets its priority to receive traffic. For example, if two target groups have the same weight, each target group receives half of the traffic. If you've specified only one target group, then 100 percent of the traffic is sent to the one target group.

    You can optionally add another target group for the default action. Choose Add action and then choose a target group and specify its weight.

  8. (Optional) To add another rule, choose Add rule and then enter a name, a priority, a condition, and an action for the rule.

    You can give each rule a priority number between 1 and 100. A listener can't have multiple rules with the same priority. Rules are evaluated in priority order, from the lowest value to the highest value. The default rule is evaluated last. For more information, see Listener rules.

  9. (Optional) To add tags, expand Listener tags, choose Add new tag, and enter a tag key and tag value.

  10. Review your configuration, and then choose Add.

To add an HTTP listener using the AWS CLI

Use the create-listener command to create a listener with a default rule, and the create-rule command to create additional listener rules.