小编Shu*_*boj的帖子

我在云形成中运行此模板，以在 ubuntu-18.04 计算机中创建自动缩放，它将自动回滚由此模板创建的所有实例，并给出此类错误。

收到 0 个 SUCCESS 信号（共 1 个）。无法满足 100% MinSuccessfulInstancesPercent 要求 无法创建以下资源：[WebServerGroup]。。用户请求回滚。

{
    "AWSTemplateFormatVersion": "2010-09-09",

    "Parameters": {
        "VpcId": {
            "Type": "AWS::EC2::VPC::Id",
            "Description": "VpcId of your existing Virtual Private Cloud (VPC)",
            "ConstraintDescription": "must be the VPC Id of an existing Virtual Private Cloud."
        },
        "Subnets": {
            "Type": "List<AWS::EC2::Subnet::Id>",
            "Description": "The list of SubnetIds in your Virtual Private Cloud (VPC)"
        },
        "InstanceType": {
            "Description": "WebServer EC2 instance type",
            "Type": "String",
            "Default": "t2.small",
            "AllowedValues": [
                "t1.micro",
                "t2.nano",
                "t2.micro",
                "t2.small",
                "t2.medium",
                "t2.large", …