ACS-ECS-RemoveFromSLBWhenPreemptibleInstanceInterrupted.json

{
  "FormatVersion": "OOS-2019-06-01",
  "Description": {
    "en": "Remove backend servers from SLB when preemptible instance of current region is about to be interrupted",
    "zh-cn": "当前地域的抢占式实例即将释放时，将实例从其所在负载均衡后端服务器列表移除",
    "name-en": "ACS-ECS-RemoveFromSLBWhenPreemptibleInstanceInterrupted",
    "name-zh-cn": "将即将释放的抢占式实例从其所在负载均衡后端服务器列表移除",
    "categories": [
      "event-trigger"
    ]
  },
  "Parameters": {
    "OOSAssumeRole": {
      "Label": {
        "en": "OOSAssumeRole",
        "zh-cn": "OOS扮演的RAM角色"
      },
      "Type": "String",
      "Default": ""
    },
    "tags": {
      "Type": "Json",
      "Label": {
        "en": "Tags",
        "zh-cn": "实例的标签"
      },
      "AssociationProperty": "Tags",
      "Default": []
    }
  },
  "RamRole": "{{OOSAssumeRole}}",
  "Tasks": [
    {
      "Name": "eventTrigger",
      "Description": {
        "en": "Monitor the preemptible instance interruption event",
        "zh-cn": "监控抢占式实例的释放事件"
      },
      "Action": "ACS::EventTrigger",
      "Properties": {
        "Tags": "{{ tags }}",
        "Product": "ECS",
        "Name": [
          "Instance:PreemptibleInstanceInterruption"
        ],
        "Level": [
          "WARN"
        ],
        "Content": {
          "action": "delete"
        },
        "RegionId": [
          "{{ ACS::RegionId }}"
        ]
      },
      "Outputs": {
        "instanceId": {
          "ValueSelector": ".content.instanceId",
          "Type": "String"
        }
      }
    },
    {
      "Name": "describeSLB",
      "Description": {
        "en": "Views the SLB id of preemptible instance interrupted",
        "zh-cn": "查询释放的抢占实例所在负载均衡ID"
      },
      "Action": "ACS::ExecuteAPI",
      "Properties": {
        "Service": "SLB",
        "API": "DescribeLoadBalancers",
        "Parameters": {
          "ServerId": "{{ eventTrigger.instanceId }}"
        }
      },
      "Outputs": {
        "loadBalancerId": {
          "ValueSelector": ".LoadBalancers.LoadBalancer[0].LoadBalancerId",
          "Type": "String"
        }
      }
    },
    {
      "Name": "setBackendServers",
      "Description": {
        "en": "Set the weight of interrupted instance zero on SLB",
        "zh-cn": "将释放的实例在负载均衡上的权重设置为0"
      },
      "Action": "ACS::ExecuteAPI",
      "Properties": {
        "Service": "SLB",
        "API": "SetBackendServers",
        "Parameters": {
          "BackendServers": [
            {
              "ServerId": "{{ eventTrigger.instanceId }}",
              "Weight": 0
            }
          ],
          "LoadBalancerId": "{{describeSLB.loadBalancerId}}"
        }
      }
    },
    {
      "Name": "waitConnectionExpire",
      "Description": {
        "en": "Wait created connection expire",
        "zh-cn": "等待已经建立的网络连接断开"
      },
      "Action": "ACS::Sleep",
      "Properties": {
        "Duration": "PT1M"
      }
    },
    {
      "Name": "removeBackendServers",
      "Description": {
        "en": "Remove the interrupted instance from SLB backend servers list",
        "zh-cn": "将释放的实例从负载均衡后端服务器列表上移除"
      },
      "Action": "ACS::ExecuteAPI",
      "Properties": {
        "Service": "SLB",
        "API": "RemoveBackendServers",
        "Parameters": {
          "BackendServers": [
            {
              "ServerId": "{{ eventTrigger.instanceId }}",
              "Weight": 0
            }
          ],
          "LoadBalancerId": "{{describeSLB.loadBalancerId}}"
        }
      }
    }
  ],
  "Outputs": {
    "instanceId": {
      "Value": "{{ eventTrigger.instanceId }}",
      "Type": "String"
    }
  },
  "Metadata": {
    "ALIYUN::OOS::Interface": {
      "ParameterGroups": [
        {
          "Parameters": [
            "tags"
          ],
          "Label": {
            "default": {
              "zh-cn": "选择标签",
              "en": "Select Tags"
            }
          }
        },
        {
          "Parameters": [
            "OOSAssumeRole"
          ],
          "Label": {
            "default": {
              "zh-cn": "高级选项",
              "en": "Control Options"
            }
          }
        }
      ]
    }
  }
}