在JSON中，模板格式错误:模板的Resources块中存在未解析的资源依赖关系~~

Question

我试图用下面的模板创建一个EC2实例

{
"Description" : "Create an EC2 instance running the Amazon Linux 64 bit AMI.",
"Parameters" : {
"KeyPair" : {
"Description" : "The EC2 Key Pair to allow SSH access to the instance",
"Type" : "String",
"Default" : "formationKey"
}
},
"Resources" : {
"Ec2Instance" : {
"Type" : "AWS::EC2::Instance",
"Properties" : {
"KeyName" : { "Ref" : "formationKeyPair" },
"ImageId" : "ami-0eb14fe5735c13eb5",
"SecurityGroups" : [ { "Ref" : "FormationSecurityGroup" } ],
"InstanceType" : "t2.micro",
"UserData": {
"Fn::Base64": {
"Fn::Join": [ "",
[ "#!/bin/bashn",
"/opt/aws/bin/cfn-init --region ", {  "Ref": "AWS::Region" },
" -s ", { "Ref": "AWS::StackName" },
" -r Ec2Instancen" ]
]
}
}
},
"Metadata" : {
"AWS::CloudFormation::Init" : {
"config" : {
"packages" : {
"yum" : {
"httpd" : []
}
},
"services" : {
"sysvinit" : {
"httpd" : {
"enabled" : "true",
"ensureRunning" : "true"
}
}
}
}
}
}
},
"InstanceSecurityGroup" : {
"Type" : "AWS::EC2::SecurityGroup",
"Properties" : {
"GroupDescription" : "Allow HTTP and SSH access",
"SecurityGroupIngress" : [ {
"IpProtocol" : "tcp",
"FromPort" : "22",
"ToPort" : "22",
"CidrIp" : "0.0.0.0/0"
}, {
"IpProtocol" : "tcp",
"FromPort" : "80",
"ToPort" : "80",
"CidrIp" : "0.0.0.0/0"
} ]
}
}
},
"Outputs" : {
"InstanceId" : {
"Description" : "The InstanceId of the newly created EC2 instance",
"Value" : {
"Ref" : "FormationEC2"
}
}
},
"AWSTemplateFormatVersion" : "2010-09-09"
}

但是我收到这个错误

"模板格式错误：无法解析的资源依赖项的Resources块中的[formationKeyPair，FormationSecurityGroup]模板"；

这似乎是一个由未定义参数引起的问题。但是，不是我一开始就定义了参数吗？？

我看到一篇与我的问题类似的问题文章，但它是用YAML写的如何在JSON中进行故障排除？

Answer 1

您的json存在一些错误。安全组和SSH的引用是错误的。我对它进行了编辑，看起来它正在工作。

{
"Description": "Create an EC2 instance running the Amazon Linux 64 bit AMI.",
"Parameters": {
"KeyPair": {
"Description": "The EC2 Key Pair to allow SSH access to the instance",
"Type": "String",
"Default": "formationKey"
}
},
"Resources": {
"Ec2Instance": {
"Type": "AWS::EC2::Instance",
"Properties": {
"KeyName": {
"Ref": "KeyPair"
},
"ImageId": "ami-0eb14fe5735c13eb5",
"SecurityGroups": [
{
"Ref": "InstanceSecurityGroup"
}
],
"InstanceType": "t2.micro",
"UserData": {
"Fn::Base64": {
"Fn::Join": [
"",
[
"#!/bin/bashn",
"/opt/aws/bin/cfn-init --region ",
{
"Ref": "AWS::Region"
},
" -s ",
{
"Ref": "AWS::StackName"
},
" -r Ec2Instancen"
]
]
}
}
},
"Metadata": {
"AWS::CloudFormation::Init": {
"config": {
"packages": {
"yum": {
"httpd": []
}
},
"services": {
"sysvinit": {
"httpd": {
"enabled": "true",
"ensureRunning": "true"
}
}
}
}
}
}
},
"InstanceSecurityGroup": {
"Type": "AWS::EC2::SecurityGroup",
"Properties": {
"GroupDescription": "Allow HTTP and SSH access",
"SecurityGroupIngress": [
{
"IpProtocol": "tcp",
"FromPort": "22",
"ToPort": "22",
"CidrIp": "0.0.0.0/0"
},
{
"IpProtocol": "tcp",
"FromPort": "80",
"ToPort": "80",
"CidrIp": "0.0.0.0/0"
}
]
}
}
},
"Outputs": {
"InstanceId": {
"Description": "The InstanceId of the newly created EC2 instance",
"Value": {
"Ref": "Ec2Instance"
}
}
}
}