在 aws cloudformation 期间未找到资源的属性 publicip

Question

我对 aws cloudformation 非常陌生，我尝试在私有 VPC 中启动安装了 Neo4j 的 EC2，我发现有人已经使用 Neo4j 创建了一个 cloudformation 模板，但该实例适用于公共 VPC，所以我有修改了模板以适合我的目的，但是当我启动它时遇到了这个问题：“找不到资源的属性 publicip”

以下是脚本的一部分（没有 neo4j bash 脚本和 EBS 卷设置）：

"Mappings" : {

"AWSRegionArch2AMI" : {
  "eu-west-1"      : { "64" : "ami-58d7e821" }
}

},

"Parameters": {
    "InstanceType" : {
    "Description" : "EC2 instance type",
    "Type" : "String",
    "Default" : "m5.large",
    "ConstraintDescription" : "Must be a valid EC2 instance type."
    },

    "SSHKeyName": {
      "Description": "Name of the SSH key that you will use to access the server (must be on AWS Availability Zone already)",
      "Type": "String"
    },

    "NetworkWhitelist": {
        "Description": " The IP address range that can be used to connect to the Neo4j server (by REST or SSH)",
        "Type": "String",
        "MinLength": "9",
        "MaxLength": "18",
        "Default": "",
        "AllowedPattern": "(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})/(\\d{1,2})",
        "ConstraintDescription": "must be a valid IP CIDR range of the form x.x.x.x/x."
    },

    "SubnetId" : {
        "Type" : "AWS::EC2::Subnet::Id",
        "Description" : "SubnetId of an existing subnet (for the primary network) in your Virtual Private Cloud (VPC)"
    },

    "SecurityGroupIds": {
        "Type": "AWS::EC2::SecurityGroup::Id",
        "Description" : "Existing SecurityGroups ID"
    },

    "AvailabilityZone": {
        "Type" : "AWS::EC2::AvailabilityZone::Name",
        "Description" : "Select the Availability Zone"
    }

},
"Resources": {
    "Server": {
        "Type": "AWS::EC2::Instance",
        "Properties": {
            "AvailabilityZone": {
                "Ref": "AvailabilityZone"
            },


            "DisableApiTermination": "FALSE",
            "ImageId": {
                "Fn::FindInMap": [ "AWSRegionArch2AMI", {
                    "Ref": "AWS::Region"
                }, "64"]
            },
            "InstanceType": {
                "Ref": "InstanceType"
            },
            "KeyName": {"Ref": "SSHKeyName"},
            "Monitoring": "false",
            "NetworkInterfaces" : [
                {
                    "AssociatePublicIpAddress": false,
                    "DeleteOnTermination": true,
                    "DeviceIndex": "0",
                    "SubnetId": {"Ref": "SubnetId"},
                    "GroupSet": [ {"Ref": "SecurityGroupIds"} ]
                }
            ],

我不能像“启动实例向导”中的“配置实例详细信息”那样启动没有公共 IP 地址的实例吗？

谢谢

Answer 1

您是否为您尝试在其中创建实例的子网启用了“自动分配公共 IP”选项？由于您明确未关联公共 IP 地址，因此可能会失败，因为资源期望分配公共 IP 地址。测试此问题的可靠方法是将SubnetId参数设置为子网的 ID，该子网在部署堆栈时不会自动分配公共 IP 地址。

Answer 2

也许您正在对实例逻辑 Id 执行 Fn::GetAtt 来获取代码中某处的 PublicIp，但实例没有分配给它的 PublicIp。