aws_ip_cloudfront.goとhoge.tmplを同じディレクトリに置く
go get github.com/bhendo/awsipranges みたいな感じで bhendo/awsipranges をインストール
hoge.tmplの cidrs, err := a.PrefixesByService("EC2") の部分を EC2 や CLOUDFRONT 等のいい感じの名前に変える
自環境の既存のVPCのID の部分を既存のVPCのIDに変える
以下叩くと標準出力にtemplateが出力される。めでたしめでたし
go run aws_ip_cloudfront.go
| package main | |
| import ( | |
| "bytes" | |
| "fmt" | |
| "github.com/bhendo/awsipranges" | |
| "net/http" | |
| "text/template" | |
| ) | |
| func main() { | |
| a, err := awsipranges.New(http.DefaultClient) | |
| if err != nil { | |
| fmt.Println(err) | |
| } | |
| cidrs, err := a.PrefixesByService("EC2") | |
| tmpl := template.Must(template.ParseFiles("hoge.tmpl")) | |
| var doc bytes.Buffer | |
| if err := tmpl.Execute(&doc, cidrs); err != nil { | |
| panic(err) | |
| } | |
| fmt.Println(doc.String()) | |
| } |
| AWSTemplateFormatVersion: "2010-09-09" | |
| Description: "auto create by golang" | |
| Parameters: {} | |
| Mappings: {} | |
| Resources: | |
| InstanceSecurityGroupIngress: | |
| Type: "AWS::EC2::SecurityGroup" | |
| Properties: | |
| VpcId: 自環境の既存のVPCのID | |
| GroupDescription: "Enable http access from CloudFront" | |
| SecurityGroupIngress: | |
| {{range .}} - | |
| IpProtocol: tcp | |
| FromPort: 80 | |
| ToPort: 80 | |
| CidrIp: {{.}} | |
| {{end}} | |
| Outputs: | |
| InstanceSecurityGroupIngress: | |
| Value: !Ref InstanceSecurityGroupIngress | |
| Export: | |
| Name: InstanceSecurityGroupIngress |
| Copyright (c) 2017 dekokun | |
| MIT License | |
| Permission is hereby granted, free of charge, to any person obtaining | |
| a copy of this software and associated documentation files (the | |
| "Software"), to deal in the Software without restriction, including | |
| without limitation the rights to use, copy, modify, merge, publish, | |
| distribute, sublicense, and/or sell copies of the Software, and to | |
| permit persons to whom the Software is furnished to do so, subject to | |
| the following conditions: | |
| The above copyright notice and this permission notice shall be | |
| included in all copies or substantial portions of the Software. | |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
| EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
| NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE | |
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