我尝试使用 Cloudformation json 模板构建基础设施。当我在我需要的两个可用区中添加两个子网和 SubnetRouteTableAssociation 时。但创建过程无法创建负载均衡器，并出现错误:
CREATE_FAILED AWS::ElasticLoadBalancing::LoadBalancer Rest ELB cannot be attached to multiple subnets in the same AZ.
以下是可用区的参数:
"AZs" : {
"Description" : "The list of AvailabilityZones.",
"Type" : "CommaDelimitedList",
"Default" : "us-east-1a,us-east-1c"
}
以下是子网资源、两个可用区中的 SubnetRouteTableAssociation 以及 Rest 的 ElasticLoadBalancing:
"PublicSubnet1a" : {
"Type" : "AWS::EC2::Subnet",
"Properties" : {
"VpcId" : { "Ref" : "VPC" },
"CidrBlock" : "10.0.0.0/24",
"AvailabilityZone": {
"Fn::Select": ["1", { "Ref": "AZs" }]
},
"Tags" : [
{"Key": "Name", "Value": {"Fn::Join": ["", ["Offering-", {"Ref": "Env"}, {"Ref": "EnvNum"}, "-VPC"]]}},
{"Key" : "Network", "Value" : "Public" }
]
}
},
"PublicSubnet1c" : {
"Type": "AWS::EC2::Subnet",
"Properties": {
"VpcId": { "Ref" : "VPC" },
"CidrBlock": "10.0.1.0/24",
"AvailabilityZone": {
"Fn::Select": ["1", { "Ref": "AZs" }]
},
"Tags" : [
{"Key": "Name", "Value": {"Fn::Join": ["", ["Offering-", {"Ref": "Env"}, {"Ref": "EnvNum"}, "-VPC"]]}},
{"Key" : "Network", "Value" : "Public" }
]
}
},
"PublicSubnet1aRouteTableAssociation" : {
"Type" : "AWS::EC2::SubnetRouteTableAssociation",
"Properties" : {
"SubnetId" : { "Ref" : "PublicSubnet1a" },
"RouteTableId" : { "Ref" : "PublicRouteTable" }
}
},
"PublicSubnet1cRouteTableAssociation" : {
"Type" : "AWS::EC2::SubnetRouteTableAssociation",
"Properties" : {
"SubnetId" : { "Ref" : "PublicSubnet1c" },
"RouteTableId" : { "Ref" : "PublicRouteTable" }
}
},
"RestELB" : {
"Type" : "AWS::ElasticLoadBalancing::LoadBalancer",
"DependsOn": "AttachGateway",
"Properties": {
"LoadBalancerName": {"Fn::Join": ["",["Rest-ELB-", {"Ref": "VPC"}]]},
"CrossZone" : "true",
"Subnets": [{ "Ref": "PublicSubnet1a" },{ "Ref": "PublicSubnet1c" }],
"Listeners" : [
{"LoadBalancerPort" : "80", "InstancePort" : "80","Protocol" : "HTTP"},
{"LoadBalancerPort" : "6060", "InstancePort" : "6060","Protocol" : "HTTP"}
],
"HealthCheck" : {
"Target" : "HTTP:80/",
"HealthyThreshold" : "3",
"UnhealthyThreshold" : "5",
"Interval" : "90",
"Timeout" : "60"
}
}
}
我做错了什么？
谢谢!
最佳答案
"PublicSubnet1a" : {
...
"AvailabilityZone": {
"Fn::Select": ["1", { "Ref": "AZs" }] // <---- selects index 1 from AZs list
},
...
"PublicSubnet1c" : {
...
"AvailabilityZone": {
"Fn::Select": ["1", { "Ref": "AZs" }] // <---- selects the same index 1 from AZs list
},
您的两个子网都从 AZ 列表中选择相同的索引(请参阅“FN::select”语句)。将 PublicSubnet1a 的 select 语句更改为
"Fn::Select": ["0", { "Ref": "AZs" }]
关于json - 创建堆栈中的 Cloudformation 错误 : "ELB cannot be attached to multiple subnets in the same AZ"，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34609095/