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。Automation 是 Amazon Systems Manager 中的一项工具。

以下示例 Amazon Systems Manager 运行手册执行这些操作：

  • 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 Example
    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: python3.8
        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 Example",
       "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": "python3.8",
                "Handler": "crossRegionImageCopy",
                "InputPayload": {
                   "newImageId": "{{ createImage.newImageId }}"
                },
                "Attachment": "crossRegionImageCopy.py"
             }
          }
       ],
       "files": {
            "crossRegionImageCopy.py": {
                "checksums": {
                    "sha256": "sampleETagValue"
                }
            }
        }
    }