通过此模板,您可以快速创建一个私有网络下的Node.js应用部署。该模版会自动创建一个私有网络和子网,然后创建一台弹性云主机用来下载安装Node.js环境。
该模版通过弹性云主机的userdata功能支持,安装和部署Node.js。
为了监测userdata的安装部署脚本执行结果,我们在模版中添加了两个虚拟资源, 类型分别为:“JDCLOUD::ResourceOrchestration::WaitCondition” 和 “JDCLOUD::ResourceOrchestration::WaitConditionHandle”。关于这两种资源类型的详细介绍,请参考JDRO资源类型介绍页面。
在弹性云主机的userdata执行脚本中,我们建议用户首先通过资源编排服务指定的对象存储地址,下载资源编排服务提供的发送消息脚本。在Node.js安装完成后,调用该发送消息脚本反馈给资源编排服务端,详见该实例模版。注
:资源编排服务发送消息脚本指定的下载地址为:
创建成功的资源栈,输出"hello world"
模板包含几个主要部分。Format Version 部分是必需部分。模板中的某些部分可以任何顺序显示。但是,在您构建模板时,使用以下列表的逻辑顺序可能会很有用,因为一个部分中的值可能会引用上一个部分中的值。列表简要概述了每个部分。
Format Version
(必选):JDRO支持的模板版本号,当前版本号:2018-10-01
Description
(可选):一个描述模板的文本字符串,对模板进行详细描述。
Parameters
(可选):定义创建资源栈时,模板用户可以定制化的参数。在运行时 (创建或更新堆栈时) 传递到模板。您可在模板的 Resources 和 Outputs 部分中引用定义的这些参数。使用参数可以增强模板的灵活性,提高复用性。
Mappings
(可选):可用来指定条件参数值的密钥和关键值的映射,与查找表类似。您可通过使用 Resources 和 Outputs 部分中的 Fn::FindInMap 内部函数将键与相应的值匹配。
Conditions
(可选):Conditions 使用 Fn::And、Fn::Or、Fn::Not、Fn::Equals 等定义条件。在创建或更新资源栈时,系统先计算模板中的所有条件,然后再创建资源。创建与 true 条件关联的所有资源,忽略与 false 条件关联的所有资源。
Resources
(可选):用于详细定义使用该模板创建的资源栈所包含的资源,包括资源间的依赖关系、配置细节等。
Outputs
(可选):用于输出一些资源属性等有用信息。可以通过 API 或控制台获取输出的内容。
{ "JDCLOUDTemplateFormatVersion": "2018-10-01", "Description": "JDRO Nodejs TEMPLATE", "Parameters": { "VPCName": { "Default": "vpc", "Type": "String", "MinLength": "1", "MaxLength": "32", "Description": "Define the VPC Name. It cannot be same as an existing VPC name, otherwise the resource will fail to be created", "AllowedPattern": "^[a-zA-Z_][a-zA-Z0-9_-]*$", "ConstraintDescription": "Name only supports numbers, capital and lowercase letters, English underline and hyphen ." }, "SubnetName": { "Default": "subnet", "Type": "String", "MinLength": "1", "MaxLength": "32", "Description": "Define the Subnet Name. It cannot be same as an existing Subnet name, otherwise the resource will fail to be created", "AllowedPattern": "^[a-zA-Z_][a-zA-Z0-9_-]*$", "ConstraintDescription": "Name only supports numbers, capital and lowercase letters, English underline and hyphen ." }, "AddressPrefix": { "Default": "10.0.0.0/16", "Type": "String", "Description": "Give an CIDR", "AllowedValues": [ "192.168.0.0/16", "172.16.0.0/16", "10.0.0.0/16" ], "ConstraintDescription": "Need give an exact CIDR." }, "InstanceName": { "Default": "vm", "Type": "String", "MinLength": "1", "MaxLength": "32", "Description": "The Instance Name", "AllowedPattern": "^[a-zA-Z_][a-zA-Z0-9_-]*$", "ConstraintDescription": "Name only supports numbers, capital and lowercase letters, English underline and hyphen ." }, "VMPassword": { "NoEcho": true, "Description": "Password for vm access", "Type": "String", "MinLength": "8", "MaxLength": "16", "AllowedPattern": "[a-zA-Z0-9]*" } }, "Mappings": { "AZInfo": { "cn-north-1": { "az1": "cn-north-1a", "az2": "cn-north-1b" }, "cn-east-1": { "az1": "cn-east-1a" }, "cn-east-2": { "az1": "cn-east-2a", "az2": "cn-east-2b" }, "cn-south-1": { "az1": "cn-south-1a" } }, "ImageInfo": { "cn-north-1": { "image": "img-9ha1rgelkq" }, "cn-east-1": { "image": "img-htaupmjlqq" }, "cn-east-2": { "image": "img-ssazsh60t6" }, "cn-south-1": { "image": "img-uxgb28v2y3" } } }, "Resources": { "MyVPC": { "Type": "JDCLOUD::VPC::VPC", "Properties": { "VpcName": { "Ref": "VPCName" } } }, "MySubnet": { "Type": "JDCLOUD::VPC::Subnet", "Properties": { "VpcId": { "Ref": "MyVPC" }, "AddressPrefix": { "Ref": "AddressPrefix" }, "SubnetName": { "Ref": "SubnetName" } } }, "MyInstance": { "Type": "JDCLOUD::VM::Instance", "Properties": { "Name": { "Ref": "InstanceName" }, "ImageId": { "Fn::FindInMap": [ "ImageInfo", { "Ref": "JDCLOUD::Region" }, "image" ] }, "InstanceType": "g.n2.medium", "AZ": { "Fn::FindInMap": [ "AZInfo", { "Ref": "JDCLOUD::Region" }, "az1" ] }, "PrimaryNetworkInterface": { "NetworkInterface": { "SubnetId": { "Ref": "MySubnet" } } }, "Password": { "Ref": "VMPassword" }, "Userdata": { "Fn::Base64": { "Fn::Join": [ "", [ "#!/bin/bash \n", " Region=", { "Ref": "JDCLOUD::Region" }, "\n", " wget jdro-userdata-${Region}.s3.${Region}.jcloudcs.com/signal.py -O /tmp/signal.py \n", " chmod +x /tmp/signal.py \n", " #user code begin \n", "cd /root \n", "curl -sL https://rpm.nodesource.com/setup_10.x | sudo bash - \n", "yum -y install lsof nodejs \n", "cat << EOF >> example.js \n", "var http = require('http'); \n", "http.createServer(function (req, res) { \n", " res.writeHead(200, {'Content-Type' : 'text/plain'}); \n", " res.end('Hello World\\n'); \n", "}).listen(3000); \n", "EOF\n", "node example.js & \n", " # user code end \n", "/tmp/signal.py --exit-code $? ", { "Ref": "MyWaitConditionHandle" }, " \n " ] ] } } } }, "MyElasticIp": { "Type": "JDCLOUD::VPC::ElasticIp", "Properties": { "ElasticIPSpec": { "BandwidthMbps": 1, "Provider": "bgp" } } }, "MyAssociateElasticIp": { "Type": "JDCLOUD::VPC::AssociateElasticIp", "Properties": { "InstanceId": { "Ref": "MyInstance" }, "InstanceType": "vm", "ElasticIpId": { "Ref": "MyElasticIp" } } }, "MyWaitCondition": { "Type": "JDCLOUD::ResourceOrchestration::WaitCondition", "DependsOn": [ "MyInstance" ], "Properties": { "Count": 1, "Handle": { "Ref": "MyWaitConditionHandle" }, "Timeout": "3600" } }, "MyWaitConditionHandle": { "Type": "JDCLOUD::ResourceOrchestration::WaitConditionHandle", "Properties": {} } }, "Outputs": { "Server_Domain": { "Value": { "Fn::Join": [ ":", [ { "Fn::GetAtt": [ "MyInstance", "ElasticIpAddress" ] }, "3000" ] ] } } } }