AWS::ElasticLoadBalancingV2::ListenerRule RedirectConfig - Amazon CloudFormation
SyntaxPropertiesExamples
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AWS::ElasticLoadBalancingV2::ListenerRule RedirectConfig

Information about a redirect action.

A URI consists of the following components: protocol://hostname:port/path?query. You must modify at least one of the following components to avoid a redirect loop: protocol, hostname, port, or path. Any components that you do not modify retain their original values.

You can reuse URI components using the following reserved keywords:

  • #{protocol}

  • #{host}

  • #{port}

  • #{path} (the leading "/" is removed)

  • #{query}

For example, you can change the path to "/new/#{path}", the hostname to "example.#{host}", or the query to "#{query}&value=xyz".

Syntax

To declare this entity in your Amazon CloudFormation template, use the following syntax:

JSON

{
  "Host" : String,
  "Path" : String,
  "Port" : String,
  "Protocol" : String,
  "Query" : String,
  "StatusCode" : String
}

YAML

  Host: String
  Path: String
  Port: String
  Protocol: String
  Query: String
  StatusCode: String

Properties

Host

The hostname. This component is not percent-encoded. The hostname can contain #{host}.

Required: No

Type: String

Minimum: 1

Maximum: 128

Update requires: No interruption

Path

The absolute path, starting with the leading "/". This component is not percent-encoded. The path can contain #{host}, #{path}, and #{port}.

Required: No

Type: String

Minimum: 1

Maximum: 128

Update requires: No interruption

Port

The port. You can specify a value from 1 to 65535 or #{port}.

Required: No

Type: String

Update requires: No interruption

Protocol

The protocol. You can specify HTTP, HTTPS, or #{protocol}. You can redirect HTTP to HTTP, HTTP to HTTPS, and HTTPS to HTTPS. You cannot redirect HTTPS to HTTP.

Required: No

Type: String

Pattern: ^(HTTPS?|#\{protocol\})$

Update requires: No interruption

Query

The query parameters, URL-encoded when necessary, but not percent-encoded. Do not include the leading "?", as it is automatically added. You can specify any of the reserved keywords.

Required: No

Type: String

Minimum: 0

Maximum: 128

Update requires: No interruption

StatusCode

The HTTP redirect code. The redirect is either permanent (HTTP 301) or temporary (HTTP 302).

Required: Yes

Type: String

Allowed values: HTTP_301 | HTTP_302

Update requires: No interruption

Examples

This example creates a listener rule with an action that redirects HTTPS requests on port 443. At least one of the following components must be modified (to avoid a redirect loop): protocol, hostname, port, or path. Components that are not modified retain their original values.

JSON

"HTTPSlistenerRule": {
    "Type": "AWS::ElasticLoadBalancingV2::ListenerRule",
    "Properties": {
        "Actions": [
            {
               "Type": "redirect",
               "RedirectConfig": {
                   "Protocol": "HTTPS",
                   "Port": 443,
                   "Host": "#{host}",
                   "Path": "/#{path}",
                   "Query": "#{query}",
                   "StatusCode": "HTTP_301"
               }
            }
        ],        
        "Conditions": [
            {
                "Field" : "path-pattern",
                "Values" : ["/path"]
            }
        ],
        "ListenerArn": {
            "Ref": "myHTTPListener"
        },
        "Priority": "1"
    }
}