[英]Cloudformation in create stack error: “ELB cannot be attached to multiple subnets in the same AZ”
我試圖用Cloudformation json模板構建基礎架構。 當我在兩個所需的可用區域中都添加了兩個Subnets和SubnetRouteTableAssociation時。 但是創建過程無法創建錯誤的負載均衡器:
CREATE_FAILED AWS :: ElasticLoadBalancing :: LoadBalancer Rest ELB無法連接到同一AZ中的多個子網。
這是可用區的參數:
"AZs" : {
"Description" : "The list of AvailabilityZones.",
"Type" : "CommaDelimitedList",
"Default" : "us-east-1a,us-east-1c"
}
這是可用性區域中的子網資源,SubnetRouteTableAssociation和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"
}
}
}
我做錯了什么?
謝謝!
"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
},
您的兩個子網都從AZ列表中選擇了相同的索引(請參見“ FN :: select”語句)。 將PublicSubnet1a
的選擇語句更改為
"Fn::Select": ["0", { "Ref": "AZs" }]
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