创建 AMI 和跨区域副本 - Amazon Systems Manager
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创建 AMI 和跨区域副本

创建实例的 Amazon Machine Image (AMI) 是备份和恢复操作中的常用过程。也可以选择将 AMI 作为灾难恢复架构的一部分复制到另一个 Amazon Web Services 区域。如果问题需要进行故障转移，则自动执行常见的维护任务可以减少停机时间。Amazon Systems Manager自动化操作可帮助您做到这一点。自动化是 Amazon Systems Manager 的一项功能。

以下示例 Amazon Systems Manager 运行手册执行以下操作：

  • 使用 aws:executeAwsApi 自动化操作创建 AMI。

  • 使用 aws:waitForAwsResourceProperty 自动化操作确认 AMI 的可用性。

  • 使用 aws:executeScript 自动化操作将 AMI 复制到目标区域。

YAML

---
description: Custom Automation Backup and Recovery Sample
schemaVersion: '0.3'
assumeRole: "{{ AutomationAssumeRole }}"
parameters:
  AutomationAssumeRole:
    type: String
    description: "(Required) The ARN of the role that allows Automation to perform
      the actions on your behalf. If no role is specified, Systems Manager Automation
      uses your IAM permissions to use this runbook."
    default: ''
  InstanceId:
    type: String
    description: "(Required) The ID of the EC2 instance."
    default: ''
mainSteps:
- name: createImage
  action: aws:executeAwsApi
  onFailure: Abort
  inputs:
    Service: ec2
    Api: CreateImage
    InstanceId: "{{ InstanceId }}"
    Name: "Automation Image for {{ InstanceId }}"
    NoReboot: false
  outputs:
    - Name: newImageId
      Selector: "$.ImageId"
      Type: String
  nextStep: verifyImageAvailability
- name: verifyImageAvailability
  action: aws:waitForAwsResourceProperty
  timeoutSeconds: 600
  inputs:
    Service: ec2
    Api: DescribeImages
    ImageIds:
    - "{{ createImage.newImageId }}"
    PropertySelector: "$.Images[0].State"
    DesiredValues:
    - available
  nextStep: copyImage
- name: copyImage
  action: aws:executeScript
  timeoutSeconds: 45
  onFailure: Abort
  inputs:
    Runtime: python3.6
    Handler: crossRegionImageCopy
    InputPayload:
      newImageId : "{{ createImage.newImageId }}"
    Script: |-
      def crossRegionImageCopy(events,context):
        import boto3

        #Initialize client
        ec2 = boto3.client('ec2', region_name='us-east-1')
        newImageId = events['newImageId']

        ec2.copy_image(
          Name='DR Copy for ' + newImageId,
          SourceImageId=newImageId,
          SourceRegion='us-west-2'
        )
JSON

{
   "description": "Custom Automation Backup and Recovery Sample",
   "schemaVersion": "0.3",
   "assumeRole": "{{ AutomationAssumeRole }}",
   "parameters": {
      "AutomationAssumeRole": {
         "type": "String",
         "description": "(Required) The ARN of the role that allows Automation to perform\nthe actions on your behalf. If no role is specified, Systems Manager Automation\nuses your IAM permissions to run this runbook.",
         "default": ""
      },
      "InstanceId": {
         "type": "String",
         "description": "(Required) The ID of the EC2 instance.",
         "default": ""
      }
   },
   "mainSteps": [
      {
         "name": "createImage",
         "action": "aws:executeAwsApi",
         "onFailure": "Abort",
         "inputs": {
            "Service": "ec2",
            "Api": "CreateImage",
            "InstanceId": "{{ InstanceId }}",
            "Name": "Automation Image for {{ InstanceId }}",
            "NoReboot": false
         },
         "outputs": [
            {
               "Name": "newImageId",
               "Selector": "$.ImageId",
               "Type": "String"
            }
         ],
         "nextStep": "verifyImageAvailability"
      },
      {
         "name": "verifyImageAvailability",
         "action": "aws:waitForAwsResourceProperty",
         "timeoutSeconds": 600,
         "inputs": {
            "Service": "ec2",
            "Api": "DescribeImages",
            "ImageIds": [
               "{{ createImage.newImageId }}"
            ],
            "PropertySelector": "$.Images[0].State",
            "DesiredValues": [
               "available"
            ]
         },
         "nextStep": "copyImage"
      },
      {
         "name": "copyImage",
         "action": "aws:executeScript",
         "timeoutSeconds": 45,
         "onFailure": "Abort",
         "inputs": {
            "Runtime": "python3.6",
            "Handler": "crossRegionImageCopy",
            "InputPayload": {
               "newImageId": "{{ createImage.newImageId }}"
            },
            "Attachment": "crossRegionImageCopy.py"
         }
      }
   ],
   "files": {
        "crossRegionImageCopy.py": {
            "checksums": {
                "sha256": "sampleETagValue"
            }
        }
    }
}