创建一个单节点WordPress应用
通过此模板，您可以快速创建一个私有网络下单机版本的WordPress应用样例。该模版会自动创建一个私有网络和子网，然后创建一台云数据库（RDS）MySQL5.7，最后去创建一台弹性云主机，用来完成WordPress部署。
该模版通过弹性云主机的userdata功能支持，将WordPress安装部署脚本同步下发到弹性云主机，在主机创建完成后，自动去下载安装WordPress，并且启动WordPress服务。
为了监测WordPress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，请参考资源编排资源类型介绍页面。
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WordPress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。
资源编排服务端收到部署成功的信号后，才会完成整个资源栈的创建。如果资源编排服务端收到部署失败的信号，则会认为资源栈创建失败，会进行回滚操作，删除已创建好的所有资源。
创建成功的资源栈，输出WordPress弹性公网IP。
注：资源编排服发送消息脚本指定的下载地址为：
- 华北-北京
Linux主机： jdro-userdata-cn-north-1.oss.cn-north-1.jcloudcs.com/signal.py
Windows主机: jdro-userdata-cn-north-1.oss.cn-north-1.jcloudcs.com/signal.exe - 华南-广州
Linux主机： jdro-userdata-cn-south-1.oss.cn-south-1.jcloudcs.com/signal.py
Windows主机: jdro-userdata-cn-south-1.oss.cn-south-1.jcloudcs.com/signal.exe
- 华东-上海
Linux主机： jdro-userdata-cn-east-2.oss.cn-east-2.jcloudcs.com/signal.py
Windows主机： jdro-userdata-cn-east-2.oss.cn-east-2.jcloudcs.com/signal.exe
- 华东-宿迁
Linux主机： jdro-userdata-cn-east-1.oss.cn-east-1.jcloudcs.com/signal.py
Windows主机： jdro-userdata-cn-east-1.oss.cn-east-1.jcloudcs.com/signal.exe
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编排模板说明:
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。
----------- 示例：
{ "JDCLOUDTemplateFormatVersion": "2018-10-01", "Description": "JDRO WORDPRESS_WITH_SINGLE 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_-]*$", "ConstraintDescription": "Name only supports numbers, capital and lowercase letters, English underline and hyphen ." }, "VMPassword": { "NoEcho": true, "Description": "Password for vm access", "Type": "String", "MinLength": "8", "MaxLength": "16", "AllowedPattern": "[a-zA-Z0-9]*" }, "DiskName": { "Default": "disk", "Type": "String", "MinLength": "1", "MaxLength": "32", "Description": "The Disk Name", "AllowedPattern": "^[a-zA-Z_][a-zA-Z0-9_-]*$", "ConstraintDescription": "" }, "DBName": { "Default": "wordpress", "Description": "MySQL database name", "Type": "String", "MinLength": "2", "MaxLength": "32", "AllowedPattern": "^[a-z][a-z0-9_]*$", "ConstraintDescription": "The name only supports lower case letters, numbers and English underline, no less than 2 characters and no more than 32 characters." }, "DBUser": { "Default": "wordpress", "Description": "Username for MySQL database access", "Type": "String", "MinLength": "1", "MaxLength": "16", "AllowedPattern": "^[a-zA-Z][a-zA-Z0-9]*$", "ConstraintDescription": "must begin with a letter and contain only alphanumeric characters." }, "DBPassword": { "NoEcho": true, "Description": "Password must contain and only supports letters both in upper case and lower case as well as figures, no less than 8 characters and no more than 16 characters. e.g. Ptest1130", "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" }, "DataDisks": [ { "AutoDelete": true, "CloudDiskSpec": { "Name": { "Ref": "DiskName" }, "AZ": { "Fn::FindInMap": [ "AZInfo", { "Ref": "JDCLOUD::Region" }, "az1" ] }, "DiskSizeGB": 20, "DiskType": "ssd" }, "DiskCategory": "cloud" } ], "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", "DatabaseUser=", { "Ref": "DBUser" }, "\n", "DatabasePwd=", { "Ref": "DBPassword" }, "\n", "DatabaseName=", { "Ref": "DBName" }, "\n", "DatabaseHost=", { "Fn::GetAtt": [ "MyDBInstance", "InternalDomainName" ] }, "\n", "WebRootPath='/var/www/html'\n", "mkdir -p $WebRootPath \n", "yum install -y curl httpd mysql-server php php-common php-mysql\n", "yum install -y php-gd php-imap php-ldap php-odbc php-pear php-xml php-xmlrpc\n", "chkconfig httpd on\n", "wget http://wordpress.org/latest.tar.gz \n", "tar -xzvf latest.tar.gz \n", "sed -i \"s/database_name_here/$DatabaseName/\" wordpress/wp-config-sample.php\n", "sed -i \"s/username_here/$DatabaseUser/\" wordpress/wp-config-sample.php\n", "sed -i \"s/password_here/${DatabasePwd:-$DatabasePwdDef}/\" wordpress/wp-config-sample.php\n", "sed -i \"s/localhost/$DatabaseHost/\" wordpress/wp-config-sample.php\n", "sed -i \"s/bpache/apache/\" wordpress/wp-config-sample.php\n", "mv wordpress/wp-config-sample.php wordpress/wp-config.php\n", "cp -a wordpress/* $WebRootPath \n", "rm -rf wordpress*\n", "service httpd stop\n", "usermod -d $WebRootPath apache &>/dev/null\n", "chown apache:apache -R $WebRootPath\n", "service httpd start\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" } } }, "MyDBInstance": { "Type": "JDCLOUD::RDS::DBInstance", "Properties": { "Engine": "MySQL", "AZId": [ { "Fn::FindInMap": [ "AZInfo", { "Ref": "JDCLOUD::Region" }, "az1" ] } ], "ChargeSpec": { "ChargeMode": "postpaid_by_duration" }, "EngineVersion": "5.7", "InstanceClass": "db.mysql.s1.micro", "InstanceName": { "Ref": "DBName" }, "InstanceStorageGB": 20, "VpcId": { "Ref": "MyVPC" }, "SubnetId": { "Ref": "MySubnet" }, "Database": { "CharacterSetName": "utf8", "DBName": { "Ref": "DBName" } }, "Account": { "AccountName": { "Ref": "DBUser" }, "AccountPassword": { "Ref": "DBPassword" } } } }, "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" ] }, "80" ] ] } } } }
