{
  "info": {
    "_postman_id": "527530c4-f173-4d58-9b81-db395f307072",
    "name": "Auto Scaling #Action=AttachInstances #Action=AttachInstances #Action=EnterStandby API",
    "description": "<fullname>Amazon EC2 Auto Scaling</fullname> <p>Amazon EC2 Auto Scaling is designed to automatically launch and terminate EC2 instances based on user-defined scaling policies, scheduled actions, and health checks.</p> <p>For more information, see the <a href=\"https://docs.aws.amazon.com/autoscaling/ec2/userguide/\">Amazon EC2 Auto Scaling User Guide</a> and the <a href=\"https://docs.aws.amazon.com/autoscaling/ec2/APIReference/Welcome.html\">Amazon EC2 Auto Scaling API Reference</a>.</p>\n\nContact Support:\n Name: Mike Ralphson\n Email: mike.ralphson@gmail.com",
    "schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json",
    "createdAt": "2026-07-28T10:19:35.000Z",
    "updatedAt": "2026-07-28T10:19:36.000Z",
    "lastUpdatedBy": "35240",
    "uid": "35240-527530c4-f173-4d58-9b81-db395f307072"
  },
  "item": [
    {
      "name": "#Action=EnterStandby",
      "item": [
        {
          "name": "Amazon EC2 Auto Scaling GET_ Enter Standby",
          "id": "d54a5ba2-c5e0-46a2-8039-6ab77776f3bf",
          "protocolProfileBehavior": {
            "disableBodyPruning": true
          },
          "request": {
            "method": "GET",
            "header": [
              {
                "key": "X-Amz-Content-Sha256",
                "value": "<string>"
              },
              {
                "key": "X-Amz-Date",
                "value": "<string>"
              },
              {
                "key": "X-Amz-Algorithm",
                "value": "<string>"
              },
              {
                "key": "X-Amz-Credential",
                "value": "<string>"
              },
              {
                "key": "X-Amz-Security-Token",
                "value": "<string>"
              },
              {
                "key": "X-Amz-Signature",
                "value": "<string>"
              },
              {
                "key": "X-Amz-SignedHeaders",
                "value": "<string>"
              },
              {
                "key": "Accept",
                "value": "text/xml"
              }
            ],
            "url": {
              "raw": "{{baseUrl}}/?InstanceIds=<string>&InstanceIds=<string>&AutoScalingGroupName=<string>&ShouldDecrementDesiredCapacity=<boolean>&Action=EnterStandby&Version=2011-01-01#Action=EnterStandby",
              "host": [
                "{{baseUrl}}"
              ],
              "path": [
                ""
              ],
              "query": [
                {
                  "description": "The IDs of the instances. You can specify up to 20 instances.",
                  "key": "InstanceIds",
                  "value": "<string>"
                },
                {
                  "description": "The IDs of the instances. You can specify up to 20 instances.",
                  "key": "InstanceIds",
                  "value": "<string>"
                },
                {
                  "description": "(Required) The name of the Auto Scaling group.",
                  "key": "AutoScalingGroupName",
                  "value": "<string>"
                },
                {
                  "description": "(Required) Indicates whether to decrement the desired capacity of the Auto Scaling group by the number of instances moved to <code>Standby</code> mode.",
                  "key": "ShouldDecrementDesiredCapacity",
                  "value": "<boolean>"
                },
                {
                  "description": "(Required) ",
                  "key": "Action",
                  "value": "EnterStandby"
                },
                {
                  "description": "(Required) ",
                  "key": "Version",
                  "value": "2011-01-01"
                }
              ],
              "hash": "Action=EnterStandby"
            },
            "description": "<p>Moves the specified instances into the standby state.</p> <p>If you choose to decrement the desired capacity of the Auto Scaling group, the instances can enter standby as long as the desired capacity of the Auto Scaling group after the instances are placed into standby is equal to or greater than the minimum capacity of the group.</p> <p>If you choose not to decrement the desired capacity of the Auto Scaling group, the Auto Scaling group launches new instances to replace the instances on standby.</p> <p>For more information, see <a href=\"https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-enter-exit-standby.html\">Temporarily removing instances from your Auto Scaling group</a> in the <i>Amazon EC2 Auto Scaling User Guide</i>.</p>"
          },
          "response": [
            {
              "id": "0def7dfc-30d7-44b4-977f-a8c4929fb712",
              "name": "Success",
              "originalRequest": {
                "method": "GET",
                "header": [
                  {
                    "key": "X-Amz-Content-Sha256",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Date",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Algorithm",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Credential",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Security-Token",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Signature",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-SignedHeaders",
                    "value": "<string>"
                  },
                  {
                    "key": "Accept",
                    "value": "text/xml"
                  },
                  {
                    "description": "Added as a part of security scheme: apikey",
                    "key": "Authorization",
                    "value": "<API Key>"
                  }
                ],
                "url": {
                  "raw": "{{baseUrl}}/?InstanceIds=<string>&AutoScalingGroupName=<string>&ShouldDecrementDesiredCapacity=<boolean>&Action=EnterStandby&Version=2011-01-01#Action=EnterStandby",
                  "host": [
                    "{{baseUrl}}"
                  ],
                  "path": [
                    ""
                  ],
                  "query": [
                    {
                      "description": "The IDs of the instances. You can specify up to 20 instances.",
                      "key": "InstanceIds",
                      "value": "<string>"
                    },
                    {
                      "description": "(Required) The name of the Auto Scaling group.",
                      "key": "AutoScalingGroupName",
                      "value": "<string>"
                    },
                    {
                      "description": "(Required) Indicates whether to decrement the desired capacity of the Auto Scaling group by the number of instances moved to <code>Standby</code> mode.",
                      "key": "ShouldDecrementDesiredCapacity",
                      "value": "<boolean>"
                    },
                    {
                      "description": "(Required) ",
                      "key": "Action",
                      "value": "EnterStandby"
                    },
                    {
                      "description": "(Required) ",
                      "key": "Version",
                      "value": "2011-01-01"
                    }
                  ],
                  "hash": "Action=EnterStandby"
                }
              },
              "status": "OK",
              "code": 200,
              "_postman_previewlanguage": "xml",
              "header": [
                {
                  "key": "Content-Type",
                  "value": "text/xml"
                }
              ],
              "cookie": [],
              "responseTime": null,
              "body": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<element>\n  <Activities>\n    <ActivityId>(string)</ActivityId>\n    <AutoScalingGroupName>(string)</AutoScalingGroupName>\n    <Description>(string)</Description>\n    <Cause>(string)</Cause>\n    <StartTime>(string)</StartTime>\n    <EndTime>(string)</EndTime>\n    <StatusCode>(string)</StatusCode>\n    <StatusMessage>(string)</StatusMessage>\n    <Progress>(integer)</Progress>\n    <Details>(string)</Details>\n    <AutoScalingGroupState>(string)</AutoScalingGroupState>\n    <AutoScalingGroupARN>(string)</AutoScalingGroupARN>\n  </Activities>\n  <Activities>\n    <ActivityId>(string)</ActivityId>\n    <AutoScalingGroupName>(string)</AutoScalingGroupName>\n    <Description>(string)</Description>\n    <Cause>(string)</Cause>\n    <StartTime>(string)</StartTime>\n    <EndTime>(string)</EndTime>\n    <StatusCode>(string)</StatusCode>\n    <StatusMessage>(string)</StatusMessage>\n    <Progress>(integer)</Progress>\n    <Details>(string)</Details>\n    <AutoScalingGroupState>(string)</AutoScalingGroupState>\n    <AutoScalingGroupARN>(string)</AutoScalingGroupARN>\n  </Activities>\n</element>",
              "createdAt": "2026-07-28T10:19:36.000Z",
              "updatedAt": "2026-07-28T10:19:36.000Z",
              "uid": "35240-0def7dfc-30d7-44b4-977f-a8c4929fb712"
            },
            {
              "id": "3e3b117b-f9d5-4d82-8ac7-eb86cafc049e",
              "name": "ResourceContentionFault",
              "originalRequest": {
                "method": "GET",
                "header": [
                  {
                    "key": "X-Amz-Content-Sha256",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Date",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Algorithm",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Credential",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Security-Token",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Signature",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-SignedHeaders",
                    "value": "<string>"
                  },
                  {
                    "key": "Accept",
                    "value": "text/xml"
                  },
                  {
                    "description": "Added as a part of security scheme: apikey",
                    "key": "Authorization",
                    "value": "<API Key>"
                  }
                ],
                "url": {
                  "raw": "{{baseUrl}}/?InstanceIds=<string>&AutoScalingGroupName=<string>&ShouldDecrementDesiredCapacity=<boolean>&Action=EnterStandby&Version=2011-01-01#Action=EnterStandby",
                  "host": [
                    "{{baseUrl}}"
                  ],
                  "path": [
                    ""
                  ],
                  "query": [
                    {
                      "description": "The IDs of the instances. You can specify up to 20 instances.",
                      "key": "InstanceIds",
                      "value": "<string>"
                    },
                    {
                      "description": "(Required) The name of the Auto Scaling group.",
                      "key": "AutoScalingGroupName",
                      "value": "<string>"
                    },
                    {
                      "description": "(Required) Indicates whether to decrement the desired capacity of the Auto Scaling group by the number of instances moved to <code>Standby</code> mode.",
                      "key": "ShouldDecrementDesiredCapacity",
                      "value": "<boolean>"
                    },
                    {
                      "description": "(Required) ",
                      "key": "Action",
                      "value": "EnterStandby"
                    },
                    {
                      "description": "(Required) ",
                      "key": "Version",
                      "value": "2011-01-01"
                    }
                  ],
                  "hash": "Action=EnterStandby"
                }
              },
              "_postman_previewlanguage": "xml",
              "header": [
                {
                  "key": "Content-Type",
                  "value": "text/xml"
                }
              ],
              "cookie": [],
              "responseTime": null,
              "body": "",
              "createdAt": "2026-07-28T10:19:36.000Z",
              "updatedAt": "2026-07-28T10:19:36.000Z",
              "uid": "35240-3e3b117b-f9d5-4d82-8ac7-eb86cafc049e"
            }
          ],
          "createdAt": "2026-07-28T10:19:36.000Z",
          "updatedAt": "2026-07-28T10:19:36.000Z",
          "uid": "35240-d54a5ba2-c5e0-46a2-8039-6ab77776f3bf"
        },
        {
          "name": "Amazon EC2 Auto Scaling POST_ Enter Standby",
          "id": "bc8ebdf4-52b2-44a2-a210-946d29206de8",
          "protocolProfileBehavior": {
            "disableBodyPruning": true
          },
          "request": {
            "method": "POST",
            "header": [
              {
                "key": "X-Amz-Content-Sha256",
                "value": "<string>"
              },
              {
                "key": "X-Amz-Date",
                "value": "<string>"
              },
              {
                "key": "X-Amz-Algorithm",
                "value": "<string>"
              },
              {
                "key": "X-Amz-Credential",
                "value": "<string>"
              },
              {
                "key": "X-Amz-Security-Token",
                "value": "<string>"
              },
              {
                "key": "X-Amz-Signature",
                "value": "<string>"
              },
              {
                "key": "X-Amz-SignedHeaders",
                "value": "<string>"
              },
              {
                "key": "Content-Type",
                "value": "text/xml"
              },
              {
                "key": "Accept",
                "value": "text/xml"
              }
            ],
            "body": {
              "mode": "raw",
              "raw": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<element>\n  <InstanceIds>(string)</InstanceIds>\n  <InstanceIds>(string)</InstanceIds>\n  <AutoScalingGroupName>(string)</AutoScalingGroupName>\n  <ShouldDecrementDesiredCapacity>(boolean)</ShouldDecrementDesiredCapacity>\n</element>",
              "options": {
                "raw": {
                  "headerFamily": "xml",
                  "language": "xml"
                }
              }
            },
            "url": {
              "raw": "{{baseUrl}}/?Action=EnterStandby&Version=2011-01-01#Action=EnterStandby",
              "host": [
                "{{baseUrl}}"
              ],
              "path": [
                ""
              ],
              "query": [
                {
                  "description": "(Required) ",
                  "key": "Action",
                  "value": "EnterStandby"
                },
                {
                  "description": "(Required) ",
                  "key": "Version",
                  "value": "2011-01-01"
                }
              ],
              "hash": "Action=EnterStandby"
            },
            "description": "<p>Moves the specified instances into the standby state.</p> <p>If you choose to decrement the desired capacity of the Auto Scaling group, the instances can enter standby as long as the desired capacity of the Auto Scaling group after the instances are placed into standby is equal to or greater than the minimum capacity of the group.</p> <p>If you choose not to decrement the desired capacity of the Auto Scaling group, the Auto Scaling group launches new instances to replace the instances on standby.</p> <p>For more information, see <a href=\"https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-enter-exit-standby.html\">Temporarily removing instances from your Auto Scaling group</a> in the <i>Amazon EC2 Auto Scaling User Guide</i>.</p>"
          },
          "response": [
            {
              "id": "481fe3be-3645-45ef-ad9a-152dddc5a3d0",
              "name": "Success",
              "originalRequest": {
                "method": "POST",
                "header": [
                  {
                    "key": "X-Amz-Content-Sha256",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Date",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Algorithm",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Credential",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Security-Token",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Signature",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-SignedHeaders",
                    "value": "<string>"
                  },
                  {
                    "key": "Content-Type",
                    "value": "text/xml"
                  },
                  {
                    "key": "Accept",
                    "value": "text/xml"
                  },
                  {
                    "description": "Added as a part of security scheme: apikey",
                    "key": "Authorization",
                    "value": "<API Key>"
                  }
                ],
                "body": {
                  "mode": "raw",
                  "raw": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<element>\n  <InstanceIds>(string)</InstanceIds>\n  <InstanceIds>(string)</InstanceIds>\n  <AutoScalingGroupName>(string)</AutoScalingGroupName>\n  <ShouldDecrementDesiredCapacity>(boolean)</ShouldDecrementDesiredCapacity>\n</element>",
                  "options": {
                    "raw": {
                      "headerFamily": "xml",
                      "language": "xml"
                    }
                  }
                },
                "url": {
                  "raw": "{{baseUrl}}/?Action=EnterStandby&Version=2011-01-01#Action=EnterStandby",
                  "host": [
                    "{{baseUrl}}"
                  ],
                  "path": [
                    ""
                  ],
                  "query": [
                    {
                      "description": "(Required) ",
                      "key": "Action",
                      "value": "EnterStandby"
                    },
                    {
                      "description": "(Required) ",
                      "key": "Version",
                      "value": "2011-01-01"
                    }
                  ],
                  "hash": "Action=EnterStandby"
                }
              },
              "status": "OK",
              "code": 200,
              "_postman_previewlanguage": "xml",
              "header": [
                {
                  "key": "Content-Type",
                  "value": "text/xml"
                }
              ],
              "cookie": [],
              "responseTime": null,
              "body": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<element>\n  <Activities>\n    <ActivityId>(string)</ActivityId>\n    <AutoScalingGroupName>(string)</AutoScalingGroupName>\n    <Description>(string)</Description>\n    <Cause>(string)</Cause>\n    <StartTime>(string)</StartTime>\n    <EndTime>(string)</EndTime>\n    <StatusCode>(string)</StatusCode>\n    <StatusMessage>(string)</StatusMessage>\n    <Progress>(integer)</Progress>\n    <Details>(string)</Details>\n    <AutoScalingGroupState>(string)</AutoScalingGroupState>\n    <AutoScalingGroupARN>(string)</AutoScalingGroupARN>\n  </Activities>\n  <Activities>\n    <ActivityId>(string)</ActivityId>\n    <AutoScalingGroupName>(string)</AutoScalingGroupName>\n    <Description>(string)</Description>\n    <Cause>(string)</Cause>\n    <StartTime>(string)</StartTime>\n    <EndTime>(string)</EndTime>\n    <StatusCode>(string)</StatusCode>\n    <StatusMessage>(string)</StatusMessage>\n    <Progress>(integer)</Progress>\n    <Details>(string)</Details>\n    <AutoScalingGroupState>(string)</AutoScalingGroupState>\n    <AutoScalingGroupARN>(string)</AutoScalingGroupARN>\n  </Activities>\n</element>",
              "createdAt": "2026-07-28T10:19:36.000Z",
              "updatedAt": "2026-07-28T10:19:36.000Z",
              "uid": "35240-481fe3be-3645-45ef-ad9a-152dddc5a3d0"
            },
            {
              "id": "3fb482d3-1f84-4510-a179-4b5c78107b8e",
              "name": "ResourceContentionFault",
              "originalRequest": {
                "method": "POST",
                "header": [
                  {
                    "key": "X-Amz-Content-Sha256",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Date",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Algorithm",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Credential",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Security-Token",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-Signature",
                    "value": "<string>"
                  },
                  {
                    "key": "X-Amz-SignedHeaders",
                    "value": "<string>"
                  },
                  {
                    "key": "Content-Type",
                    "value": "text/xml"
                  },
                  {
                    "key": "Accept",
                    "value": "text/xml"
                  },
                  {
                    "description": "Added as a part of security scheme: apikey",
                    "key": "Authorization",
                    "value": "<API Key>"
                  }
                ],
                "body": {
                  "mode": "raw",
                  "raw": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<element>\n  <InstanceIds>(string)</InstanceIds>\n  <InstanceIds>(string)</InstanceIds>\n  <AutoScalingGroupName>(string)</AutoScalingGroupName>\n  <ShouldDecrementDesiredCapacity>(boolean)</ShouldDecrementDesiredCapacity>\n</element>",
                  "options": {
                    "raw": {
                      "headerFamily": "xml",
                      "language": "xml"
                    }
                  }
                },
                "url": {
                  "raw": "{{baseUrl}}/?Action=EnterStandby&Version=2011-01-01#Action=EnterStandby",
                  "host": [
                    "{{baseUrl}}"
                  ],
                  "path": [
                    ""
                  ],
                  "query": [
                    {
                      "description": "(Required) ",
                      "key": "Action",
                      "value": "EnterStandby"
                    },
                    {
                      "description": "(Required) ",
                      "key": "Version",
                      "value": "2011-01-01"
                    }
                  ],
                  "hash": "Action=EnterStandby"
                }
              },
              "_postman_previewlanguage": "xml",
              "header": [
                {
                  "key": "Content-Type",
                  "value": "text/xml"
                }
              ],
              "cookie": [],
              "responseTime": null,
              "body": "",
              "createdAt": "2026-07-28T10:19:36.000Z",
              "updatedAt": "2026-07-28T10:19:36.000Z",
              "uid": "35240-3fb482d3-1f84-4510-a179-4b5c78107b8e"
            }
          ],
          "createdAt": "2026-07-28T10:19:36.000Z",
          "updatedAt": "2026-07-28T10:19:36.000Z",
          "uid": "35240-bc8ebdf4-52b2-44a2-a210-946d29206de8"
        }
      ],
      "id": "3f1d771c-2ec6-4bd9-a47c-12d38405a6e9",
      "createdAt": "2026-07-28T10:19:36.000Z",
      "updatedAt": "2026-07-28T10:19:36.000Z",
      "uid": "35240-3f1d771c-2ec6-4bd9-a47c-12d38405a6e9"
    }
  ],
  "auth": {
    "type": "apikey",
    "apikey": [
      {
        "key": "key",
        "value": "Authorization",
        "type": "string"
      },
      {
        "key": "value",
        "value": "{{apiKey}}",
        "type": "string"
      },
      {
        "key": "in",
        "value": "header",
        "type": "string"
      }
    ]
  },
  "variable": [
    {
      "key": "region",
      "value": "us-east-1"
    },
    {
      "key": "baseUrl",
      "value": "http://autoscaling.{{region}}.amazonaws.com"
    }
  ]
}