1
我的AWS Cloudformation模板中具有以下配置。aws cloudformation中的cfn-signal與launchConfiguration和AutoScalingGroup
該模板根據instance1創建一個EC2實例。我在我的LaunchConfiguration中使用對同一實例的引用來創建相同類型的實例。 我面臨的問題是通過在我的AutoScalingGroup模板中包含CreationPolicy元素。當ASG啓動一個實例並等待cfn-signal時，出現以下錯誤。
+ /opt/aws/bin/cfn-signal -e 0 --stack ss07 --resource Instance1 --region us-west-2
ValidationError: Resource Instance1 is in CREATE_COMPLETE state and cannot be signaled
好像不知何故參考了已經存在INSTANCE1，而不是實例被創建LaunchConfig。我看到了內嵌了LaunchConfig的示例，但我想將實例詳細信息保存在一個地方而不是兩個地方。
"instance1": {
"Type": "AWS::EC2::Instance",
"Metadata": {
"AWS::CloudFormation::Init": {
"configSets": {
"install": ["yum_packages","install_cfn"]
},
"yum_packages": {
"packages" : {
"yum" : {
"awslogs" : [],
"ruby" : [],
"wget" : [],
"httpd" : []
}
}
},
"install_cfn": {
"files": {
"/etc/cfn/cfn-hup.conf": {
"content": {
"Fn::Join": [
"",
[
"[main]\n",
"stack=",
{
"Ref": "AWS::StackId"
},
"\n",
"region=",
{
"Ref": "AWS::Region"
},
"\n"
]
]
},
"mode": "000400",
"owner": "root",
"group": "root"
},
"/etc/cfn/hooks.d/cfn-auto-reloader.conf": {
"content": {
"Fn::Join": [
"",
[
"[cfn-auto-reloader-hook]\n",
"triggers=post.update\n",
"path=Resources.WebServer.Metadata.AWS::CloudFormation::Init\n",
"action=/opt/aws/bin/cfn-init -v ",
" --stack ",
{
"Ref": "AWS::StackName"
},
" --resource splitsweetInstance ",
" --configsets install ",
" --region ",
{
"Ref": "AWS::Region"
},
"\n"
]
]
},
"mode": "000400",
"owner": "root",
"group": "root"
}
},
"services": {
"sysvinit": {
"cfn-hup": { "enabled": "true", "ensureRunning": "true", "files": [
"/etc/cfn/cfn-hup.conf",
"/etc/cfn/hooks.d/cfn-auto-reloader.conf"
]
}
}
}
}
}
},
"CreationPolicy": {
"ResourceSignal": {
"Timeout": "PT10M"
}
},
"Properties": {
"ImageId": {
"Fn::FindInMap": [
"AWSRegionArch2AMI", {
"Ref": "AWS::Region"
}, {
"Fn::FindInMap": [
"AWSInstanceType2Arch", {
"Ref": "instanceType1"
},
"Arch"
]
}
]
},
"InstanceType": {"Ref": "instanceType1"},
"KeyName": {"Ref": "KeyName"},
"Monitoring": "false",
"UserData" : { "Fn::Base64" : { "Fn::Join" : ["", [
"#!/bin/bash -xe\n",
"yum install -y aws-cfn-bootstrap\n",
"# Install the files and packages from the metadata\n",
"/opt/aws/bin/cfn-init -v ",
" --stack ", { "Ref" : "AWS::StackName" },
" --resource splitsweetInstance ",
" --configsets install ",
" --region ", { "Ref" : "AWS::Region" }, "\n",
"wget ", { "Fn::FindInMap": [ "Region2CodeDeployAgent", { "Ref": "AWS::Region"}, "url"] }, "\n",
"chmod +x ./install\n",
"./install auto\n",
"# Signal the status from cfn-init\n",
"/opt/aws/bin/cfn-signal -e $? ",
" --stack ", { "Ref" : "AWS::StackName" },
" --resource splitsweetInstance ",
" --region ", { "Ref" : "AWS::Region" }, "\n"
]]}},
"Tags": [
{
"Key": "Name",
"Value": "inst1"
}
],
"SecurityGroupIds": [
{ "Fn::GetAtt" : [ "instance1Sg", "GroupId" ] }
]
}
}
我的啓動配置如下 -
"LaunchConfig1": {
"Type" : "AWS::AutoScaling::LaunchConfiguration",
"Properties" : {
"ImageId": {
"Fn::FindInMap": [
"AWSRegionArch2AMI", {
"Ref": "AWS::Region"
}, {
"Fn::FindInMap": [
"AWSInstanceType2Arch", {
"Ref": "instanceType1"
},
"Arch"
]
}
]
},
"InstanceId" : { "Ref":"instance1"},
"InstanceMonitoring" : "false",
"InstanceType" : { "Ref": "instanceType1"},
"KeyName" : { "Ref" : "KeyName" },
"SecurityGroups" : [ { "Fn::GetAtt" : [ "instance1Sg", "GroupId" ] } ]
}
}
這是我AutoScalingGroup模板 -
"AutoScalingGroup1": {
"Type" : "AWS::AutoScaling::AutoScalingGroup",
"Properties" : {
"AvailabilityZones" : { "Fn::GetAZs": { "Ref": "AWS::Region" } },
"Cooldown" : "60",
....
"LaunchConfigurationName" : {"Ref":"LaunchConfig1"},
"MaxSize" : "3",
"MinSize" : "1",
"TargetGroupARNs" : [ {"Ref":"TargetGroup1"} ],
"VPCZoneIdentifier" : [ { "Ref": "subnetCache1" }, { "Ref": "subnetCache2" }, { "Ref": "subnetCache3" } ]
},
"CreationPolicy" : {
"ResourceSignal" : {
"Timeout" : "PT6M",
"Count" : "1"
}
}
}
感謝您的答覆。關於答案的其他問題 - 1.如果我覆蓋UserData，元數據是否仍然適用？我無法在LaunchConfiguration中找到指定的元數據。 2.關於你的第二條評論，是否有一個例子來動態地找出邏輯資源關聯？ –