在AWS Cloudformation中,有没有办法在VPC中使用公共IP 声明EC2实例,而不需要声明弹性IP并附加到它?
在AWS :: AutoScaling :: LaunchConfiguration中,您可以添加属性" AssociatePublicIpAddress"说实例将自动接受公共IP。我正在寻找AWS :: EC2 :: Instance
的等价物以下是我用于创建EC2实例的cloudformation代码段。我无法提及如何添加公共IP,而无需预先声明弹性IP。
"MyEc2Instance": {
"Type": "AWS::EC2::Instance",
"Properties": {
"IamInstanceProfile": {
"Ref": "MyEc2InstanceProfile"
},
"ImageId": {
"Fn::FindInMap": [
"MyEc2Box",
{
"Ref": "Region"
},
"ImageId"
]
},
"InstanceType": {
"Fn::FindInMap": [
"MyEc2Box",
{
"Ref": "Region"
},
"InstanceType"
]
},
"KeyName": {
"Ref": "DefaultKeyPair"
},
"Monitoring": "true",
"SecurityGroupIds": [
{
"Ref": "MyEc2SecurityGroup"
}
],
"SubnetId": {
"Ref": "MyBoxSubnet"
},
"Tags": [
{
"Key": "Name",
"Value": "MyBox"
},
]
}
},
答案 0 :(得分:15)
假设您在VPC公有子网中启动实例(即具有路由表的子网,包括将流量发送到0.0.0.0/0到Internet网关的规则),只需在NetworkInterfaces组中定义AssociatePublicIpAddress属性您的EC2资源:
"NetworkInterfaces" : [{
"AssociatePublicIpAddress" : "True",
"DeleteOnTermination" : "True",
"SubnetId" : { "Ref" : "PublicSubnet" },
"DeviceIndex" : "0",
"GroupSet" : [ { "Ref" : "SecurityGroup" } ]
}],
上的文档
如果您在EC2 Classic网络(非VPC)中启动实例,它将自动收到公共IP地址。
答案 1 :(得分:4)
我看到这是一个老帖子,但我发布答案无论如何它可能会有所帮助。 在子网中,您可以设置:" MapPublicIpOnLaunch"为True,因此该子网的所有实例都将具有公共IP。
MapPublicIpOnLaunch
Indicates whether instances that are launched in this subnet receive a public IP address. By default, the value is false.
Required: No
Type: Boolean
Update requires: No interruption.