Question

尝试使用AWS CDK CfnParameter参数设置ec2.Vpc的cidr值。目的是将用于VPC的堆栈重新用于VPC的CIDR，作为“ plugabble”值。

为以下代码段合成堆栈（$ cdk synth）时，会生成“ $ {Token [TOKEN.72]}无效”错误：

        // Parameter
        const vpcCidr = new cdk.CfnParameter(this, 'vpcCidr', {
            type: 'String',
            default: "10.0.0.0/16",
            minLength: 10,
            maxLength: 18,
            allowedPattern: '(\\d{1,3})\.(\\d{1,3})\.(\\d{1,3})\.(\\d{1,3})/(\\d{1,2})'
        });

        // VPC Congfiguration
        const vpc = new ec2.Vpc(this, "vpcName", {
            cidr: vpcCidr.valueAsString,
            maxAzs: 2,
            vpnGateway: true, // VPC can accept VPN connections
            subnetConfiguration: [
                {
                    cidrMask: 19,
                    name: "Private",
                    subnetType: SubnetType.PRIVATE,
                },
                {
                    cidrMask: 20,
                    name: "Public",
                    subnetType: SubnetType.PUBLIC,
                },
                {
                    cidrMask: 21,
                    name: "Protected",
                    subnetType: SubnetType.ISOLATED,
                },
            ],
        });

我尝试将cidr块作为静态字符串传递，并且可以正常工作：

        // VPC Congfiguration
        const vpc = new ec2.Vpc(this, "vpcName", {
            cidr: "10.0.0.0/16",
            maxAzs: 2,
            vpnGateway: true, // VPC can accept VPN connections
            subnetConfiguration: [
                {
                    cidrMask: 19,
                    name: "Private",
                    subnetType: SubnetType.PRIVATE,
                },
                {
                    cidrMask: 20,
                    name: "Public",
                    subnetType: SubnetType.PUBLIC,
                },
                {
                    cidrMask: 21,
                    name: "Protected",
                    subnetType: SubnetType.ISOLATED,
                },
            ],
        });

预期：如上例所示，传递给ec2.Vpc构造的cidr属性的vpcCidr.valueAsString应该与设置cidr：“ cidr ip / netmask”相同。

实际：$ {Token [TOKEN.72]}无效。看起来network-util.js中的以下函数引发了错误

    /**
     * Converts a string IPv4 to a number
     *
     * takes an IP Address (e.g. 174.66.173.168) and converts to a number
     * (e.g 2923605416); currently only supports IPv4
     *
     * Uses the formula:
     * (first octet * 256³) + (second octet * 256²) + (third octet * 256) +
     * (fourth octet)
     *
     * @param  {string} the IP address (e.g. 174.66.173.168)
     * @returns {number} the integer value of the IP address (e.g 2923605416)
     */
    static ipToNum(ipAddress) {
        if (!this.validIp(ipAddress)) {
            throw new Error(`${ipAddress} is not valid`);
        }
        return ipAddress
            .split('.')
            .reduce((p, c, i) => p + parseInt(c, 10) * 256 ** (3 - i), 0);
    }

环境：

AWS CDK CLI版本：1.3.0

  "dependencies": {
    "@aws-cdk/assert": "^1.2.0",
    "@aws-cdk/aws-ec2": "^1.2.0",
    "@aws-cdk/aws-ram": "^1.2.0",
    "@aws-cdk/core": "^1.2.0"
}

OS：OSX Mojave
语言：打字稿

Answer 1

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从cfnParameter.valueAsString分配ec2.Vpc.cidr值时，在cdk合成上获取“ $ {Token [TOKEN.72]}无效”错误

1 个答案: