我正在阅读有关亚马逊CloudFormation的信息，我想推出这个CF模板https://S3 . Amazon AWS . com/cloud formation-templates-us-east-1/WordPress _ Single _ Instance _ With _ rds . template，它已由亚马逊的“入门”提供。
在我删除默认VPC和子网之前，现在我需要直接指定它。在谷歌搜索后，我已经将上面的模板编辑为这样的视图：
{
"AWSTemplateFormatVersion" : "2010-09-09",
"Description" : "AWS CloudFormation Sample Template WordPress_Single_Instance_With_RDS: WordPress is web software you can use to create a website or blog. This template installs a single-instance WordPress deployment that uses an Amazon RDS database instance for storage. It demonstrates using the AWS CloudFormation bootstrap scripts to install packages and files when an instance is launched. **WARNING** This template creates an Amazon EC2 instance and an Amazon RDS database instance. You will be billed for the AWS resources used if you create a stack from this template.",
"Parameters" : {
"KeyName": {
"Description" : "Name of an existing EC2 KeyPair to enable SSH access to the instances",
"Type": "String",
"MinLength": "1",
"MaxLength": "255",
"AllowedPattern" : "[\\x20-\\x7E]*",
"ConstraintDescription" : "can contain only ASCII characters."
},
"InstanceType" : {
"Description" : "WebServer EC2 instance type",
"Type" : "String",
"Default" : "t1.micro",
"AllowedValues" : [ "t1.micro", "t2.micro", "t2.small", "t2.medium", "m3.medium", "m3.large", "m3.xlarge", "m3.2xlarge" ],
"ConstraintDescription" : "must be a valid EC2 instance type."
},
"myVPC": {
"Description" : "Id of my VPC",
"Type" : "String",
"Default" : "vpc-1bcf9e7e"
},
"MySubnet": {
"Description" : "My subnet from my VPC",
"Type": "String",
"Default": "subnet-75eec810"
},
"RDSSubnets": {
"Description" : "RDS subnets from my VPC",
"Type": "CommaDelimitedList",
"Default": "subnet-75eec810,subnet-448bcc33"
},
"DBClass" : {
"Default" : "db.t1.micro",
"Description" : "Database instance class",
"Type" : "String",
"AllowedValues" : [ "db.t1.micro", "db.t2.micro", "db.t2.small", "db.t2.medium", "db.m3.medium", "db.m3.large", "db.m3.xlarge", "db.m3.2xlarge" ],
"ConstraintDescription" : "must select a valid database instance type."
},
"DBName" : {
"Default": "wordpress",
"Description" : "The WordPress database name",
"Type": "String",
"MinLength": "1",
"MaxLength": "64",
"AllowedPattern" : "[a-zA-Z][a-zA-Z0-9]*",
"ConstraintDescription" : "must begin with a letter and contain only alphanumeric characters."
},
"DBUsername" : {
"Default": "admin",
"NoEcho": "true",
"Description" : "The WordPress database admin account username",
"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" : {
"Default": "password",
"NoEcho": "true",
"Description" : "The WordPress database admin account password",
"Type": "String",
"MinLength": "8",
"MaxLength": "41",
"AllowedPattern" : "[a-zA-Z0-9]*",
"ConstraintDescription" : "must contain only alphanumeric characters."
},
"DBAllocatedStorage" : {
"Default": "5",
"Description" : "The size of the database (Gb)",
"Type": "Number",
"MinValue": "5",
"MaxValue": "1024",
"ConstraintDescription" : "must be between 5 and 1024Gb."
},
"SSHLocation" : {
"Description" : " The IP address range that can be used to SSH to the EC2 instances",
"Type": "String",
"MinLength": "9",
"MaxLength": "18",
"Default": "0.0.0.0/0",
"AllowedPattern": "(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})/(\\d{1,2})",
"ConstraintDescription": "must be a valid IP CIDR range of the form x.x.x.x/x."
}
},
"Mappings" : {
"AWSInstanceType2Arch" : {
"t1.micro" : { "Arch" : "PV64" },
"t2.micro" : { "Arch" : "HVM64" },
"t2.small" : { "Arch" : "HVM64" },
"t2.medium" : { "Arch" : "HVM64" },
"m3.medium" : { "Arch" : "PV64" },
"m3.large" : { "Arch" : "PV64" },
"m3.xlarge" : { "Arch" : "PV64" },
"m3.2xlarge" : { "Arch" : "PV64" }
},
"AWSRegionArch2AMI" : {
"us-east-1" : { "PV64" : "ami-7c807d14", "HVM64" : "ami-76817c1e" },
"us-west-2" : { "PV64" : "ami-1b3b462b", "HVM64" : "ami-d13845e1" },
"us-west-1" : { "PV64" : "ami-a8d3d4ed", "HVM64" : "ami-f0d3d4b5" },
"eu-west-1" : { "PV64" : "ami-672ce210", "HVM64" : "ami-892fe1fe" },
"ap-southeast-1" : { "PV64" : "ami-56b7eb04", "HVM64" : "ami-a6b6eaf4" },
"ap-northeast-1" : { "PV64" : "ami-25dd9324", "HVM64" : "ami-29dc9228" },
"ap-southeast-2" : { "PV64" : "ami-6bf99c51", "HVM64" : "ami-d9fe9be3" },
"sa-east-1" : { "PV64" : "ami-c7e649da", "HVM64" : "ami-c9e649d4" },
"us-gov-west-1" : { "PV64" : "ami-ab4a2d88", "HVM64" : "ami-a54a2d86" },
"cn-north-1" : { "PV64" : "ami-cab82af3", "HVM64" : "ami-ccb82af5" }
}
},
"Resources" : {
"WebServer": {
"Type": "AWS::EC2::Instance",
"Metadata" : {
"AWS::CloudFormation::Init" : {
"config" : {
"packages" : {
"yum" : {
"httpd" : [],
"php" : [],
"php-mysql" : []
}
},
"sources" : {
"/var/www/html" : "http://wordpress.org/latest.tar.gz"
},
"files" : {
"/var/www/html/wordpress/wp-config.php" : {
"content" : { "Fn::Join" : ["", [
"<?php\n",
"define('DB_NAME', '", {"Ref" : "DBName"}, "');\n",
"define('DB_USER', '", {"Ref" : "DBUsername"}, "');\n",
"define('DB_PASSWORD', '", {"Ref" : "DBPassword" }, "');\n",
"define('DB_HOST', '", {"Fn::GetAtt" : ["DBInstance", "Endpoint.Address"]},"');\n",
"define('DB_CHARSET', 'utf8');\n",
"define('DB_COLLATE', '');\n"
]] },
"mode" : "000644",
"owner" : "root",
"group" : "root"
}
},
"services" : {
"sysvinit" : {
"httpd" : { "enabled" : "true", "ensureRunning" : "true" },
"sendmail" : { "enabled" : "false", "ensureRunning" : "false" }
}
}
}
}
},
"Properties": {
"SubnetId": { "Ref": "MySubnet" },
"ImageId" : { "Fn::FindInMap" : [ "AWSRegionArch2AMI", { "Ref" : "AWS::Region" },
{ "Fn::FindInMap" : [ "AWSInstanceType2Arch", { "Ref" : "InstanceType" }, "Arch" ] } ] },
"InstanceType" : { "Ref" : "InstanceType" },
"SecurityGroupIds" : [ {"Ref" : "WebServerSecurityGroup"} ],
"KeyName" : { "Ref" : "KeyName" },
"UserData" : { "Fn::Base64" : { "Fn::Join" : ["", [
"#!/bin/bash\n",
"yum update -y aws-cfn-bootstrap\n",
"/opt/aws/bin/cfn-init -s ", { "Ref" : "AWS::StackId" }, " -r WebServer ",
" --region ", { "Ref" : "AWS::Region" }, "\n",
"/opt/aws/bin/cfn-signal -e $? '", { "Ref" : "WaitHandle" }, "'\n",
"# Setup correct file ownership\n",
"chown -R apache:apache /var/www/html/wordpress\n",
"# Add keys and salts to the config file\n",
"wp_config=/var/www/html/wordpress/wp-config.php\n",
"GET https://api.wordpress.org/secret-key/1.1/salt/ >> $wp_config\n",
"echo \"define('WPLANG' , '');\" >> $wp_config\n",
"echo \"define('WP_DEBUG' , false);\" >> $wp_config\n",
"echo \"\\$table_prefix = 'wp_';\" >> $wp_config\n",
"echo \"if ( !defined('ABSPATH') )\" >> $wp_config\n",
"echo \" define('ABSPATH', dirname(__FILE__) . '/');\" >> $wp_config\n",
"echo \"require_once(ABSPATH . 'wp-settings.php');\" >> $wp_config\n"
]]}}
}
},
"WaitHandle" : {
"Type" : "AWS::CloudFormation::WaitConditionHandle"
},
"WaitCondition" : {
"Type" : "AWS::CloudFormation::WaitCondition",
"DependsOn" : "WebServer",
"Properties" : {
"Handle" : {"Ref" : "WaitHandle"},
"Timeout" : "1200"
}
},
"DBInstance" : {
"Type": "AWS::RDS::DBInstance",
"Properties": {
"DBSubnetGroupName" : { "Ref" : "MyDBSubnetGroup" },
"VPCSecurityGroups" : [ { "Ref" : "DBSecurityGroup" } ],
"DBName" : { "Ref" : "DBName" },
"Engine" : "MySQL",
"MasterUsername" : { "Ref" : "DBUsername" },
"DBInstanceClass" : { "Ref" : "DBClass" },
"DBSecurityGroups" : [{ "Ref" : "DBSecurityGroup" }],
"AllocatedStorage" : { "Ref" : "DBAllocatedStorage" },
"MasterUserPassword": { "Ref" : "DBPassword" }
}
},
"DBSecurityGroup": {
"Type": "AWS::RDS::DBSecurityGroup",
"Properties": {
"EC2VpcId" : { "Ref" : "myVPC" },
"DBSecurityGroupIngress": { "EC2SecurityGroupId": { "Fn::GetAtt" : [ "WebServerSecurityGroup", "GroupId" ] } },
"GroupDescription" : "Frontend Access"
}
},
"WebServerSecurityGroup" : {
"Type" : "AWS::EC2::SecurityGroup",
"Properties" : {
"VpcId" : {"Ref" : "myVPC"},
"GroupDescription" : "Enable HTTP access via port 80 and SSH access",
"SecurityGroupIngress" : [
{"IpProtocol" : "tcp", "FromPort" : "80", "ToPort" : "80", "CidrIp" : "0.0.0.0/0"},
{"IpProtocol" : "tcp", "FromPort" : "22", "ToPort" : "22", "CidrIp" : { "Ref" : "SSHLocation"}}
]
}
},
"MyDBSubnetGroup" : {
"Type" : "AWS::RDS::DBSubnetGroup",
"Properties" : {
"DBSubnetGroupDescription" : "Subnets available for the RDS DB Instance",
"SubnetIds" : { "Ref" : "RDSSubnets" }
}
}
},
"Outputs" : {
"WebsiteURL" : {
"Value" : { "Fn::Join" : ["", ["http://", { "Fn::GetAtt" : [ "WebServer", "PublicDnsName" ]}, "/wordpress"]] },
"Description" : "WordPress Website"
}
}
}
http://pastebin.com/0cS9Ba0t
不幸的是，现在我有我不知道如何解决的错误：
CREATE_FAILED AWS::CloudFormation::WaitCondition WaitCondition WaitCondition timed out. Received 0 conditions when expecting 1
此模板中应更改哪些内容？
模板包含等待条件。在EC2实例完全启动后，它调用cfn信号。在您的计算机上安装和配置Wordpress似乎失败。
在创建 CloudFormation 堆栈时仔细检查 VPC 和子网。
在我的例子中，问题是DB实例的用户名和密码，而其他配置已经使用了堆栈名称。因此，我为堆栈选择了一个唯一的名称，并仅使用char作为dbname和password。
