如何使用 CloudFormation 创建具有集成 RDS 的 AWS Elasticbeanstalk 应用程序？
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【中文标题】如何使用 CloudFormation 创建具有集成 RDS 的 AWS Elasticbeanstalk 应用程序？【英文标题】：How to create AWS Elasticbeanstalk application with integrated RDS using CloudFormation? 【发布时间】：2020-01-28 18:48:18 【问题描述】：我正在尝试为使用 Postgres 的 SpringBoot 应用程序设置 AWS 环境。 我决定使用 CloudFormation 来配置我的应用程序所需的所有 AWS 组件。
以下是成云模板app.json：
"AWSTemplateFormatVersion": "2010-09-09",
"Parameters":
"S3BucketName":
"Description": "S3 BucketName",
"Type": "String"
,
"S3FileName":
"Description": "Name of the jar/war file",
"Type": "String"
,
"DBName":
"Default":"mytododb",
"Description":"The 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."
,
"DBUser":
"Description":"The 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":
"NoEcho":"true",
"Description":"The 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."
,
"DBInstanceClass":
"Default":"db.t2.micro",
"Description":"The database instance type",
"Type":"String",
"ConstraintDescription":"must select a valid database instance type."
,
"MultiAZDatabase":
"Default":"false",
"Description":"Create a multi-AZ RDS database instance",
"Type":"String",
"AllowedValues":[
"true",
"false"
],
"ConstraintDescription":"must be either true or false."
,
"Resources":
"SpringBootApplication":
"Type": "AWS::ElasticBeanstalk::Application",
"Properties":
"Description":"Spring boot and elastic beanstalk"
,
"SpringBootApplicationVersion":
"Type": "AWS::ElasticBeanstalk::ApplicationVersion",
"Properties":
"ApplicationName":"Ref":"SpringBootApplication",
"SourceBundle":
"S3Bucket":
"Ref": "S3BucketName"
,
"S3Key":
"Ref": "S3FileName"
,
"SpringBootBeanStalkConfigurationTemplate":
"Type": "AWS::ElasticBeanstalk::ConfigurationTemplate",
"Properties":
"ApplicationName": "Ref":"SpringBootApplication",
"Description":"A display of speed boot application",
"OptionSettings": [
"Namespace": "aws:rds:dbinstance",
"OptionName": "DBAllocatedStorage",
"Value":
"Ref": "DBAllocatedStorage"
,
"Namespace": "aws:rds:dbinstance",
"OptionName": "DBDeletionPolicy",
"Value": "Delete"
,
"Namespace": "aws:rds:dbinstance",
"OptionName": "DBEngine",
"Value": "postgres"
,
"Namespace": "aws:rds:dbinstance",
"OptionName": "DBEngineVersion",
"Value": "10.4"
,
"Namespace": "aws:rds:dbinstance",
"OptionName": "DBInstanceClass",
"Value": "Ref": "DBInstanceClass"
,
"OptionName": "DBPassword",
"Namespace": "aws:rds:dbinstance",
"Value": "Ref": "DBPassword"
,
"Namespace": "aws:rds:dbinstance",
"OptionName": "DBUser",
"Value": "Ref": "DBUser"
,
"Namespace": "aws:rds:dbinstance",
"OptionName": "MultiAZDatabase",
"Value": "Ref": "MultiAZDatabase"
],
"SolutionStackName": "64bit Amazon Linux 2018.03 v2.9.2 running Java 8"
,
"SpringBootBeanstalkEnvironment":
"Type": "AWS::ElasticBeanstalk::Environment",
"Properties":
"ApplicationName": "Ref":"SpringBootApplication",
"EnvironmentName":"TodoAppEnvironment",
"TemplateName": "Ref":"SpringBootBeanStalkConfigurationTemplate",
"VersionLabel": "Ref": "SpringBootApplicationVersion"
,
"Outputs":
"DevURL":
"Description": "The URL of the DEV Elastic Beanstalk environment",
"Value":
"Fn::Join": [
"",
[
"Fn::GetAtt": [
"SpringBootBeanstalkEnvironment",
"EndpointURL"
]
]
]
,
"Export":
"Name":
"Fn::Sub": "$AWS::StackName-EndpointURL"
而参数文件parameters.json为：
[
"ParameterKey": "DBUser",
"ParameterValue": "myuser"
,
"ParameterKey": "DBPassword",
"ParameterValue": "secret"
,
"ParameterKey": "S3BucketName",
"ParameterValue": "todoapp"
,
"ParameterKey": "S3FileName",
"ParameterValue": "todo-api-spring-boot-0.0.1.jar"
]
我正在使用创建 CloudFormation 堆栈 aws cloudformation create-stack --template-body file://app.json --parameters file://parameters.json --stack-name=todo-stack
问题： 堆栈正在创建，但数据库 (RDS) 实例未创建，当我在管理控制台中看到应用程序的 ElasticBeanstalk 配置时，没有与应用程序关联的数据库配置。
我的期望/假设是通过在 OptionSettings 中配置各种 aws:rds:dbinstance 属性，一个 RDS 实例将被配置并与 ElasticBeanstalk 应用程序关联。
是我的理解有误还是我遗漏了任何其他设置？
PS： 这个想法是使用集成的 RDS，这样我就可以在我的应用程序中使用 RDS_HOST、RDS_PORT 等属性来连接数据库。
我能够配置单独的 RDS 资源并通过指定连接参数来连接到它。但我期望 OptionSettings 中的 aws:rds:dbinstance 属性会创建 RDS 并将其与 Elasticbeanstalk 应用程序相关联。如果不是这样，那么在 OptionSettings 中配置这些参数的目的是什么？
参考：
https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/command-options-general.html#command-options-general-rdsdbinstance
https://github.com/metabase/metabase/blob/master/bin/aws-eb-docker/cloudformation-elasticbeanstalk.json.template
【问题讨论】：
我遇到了同样的问题。你最终找到解决方案了吗？ 【参考方案1】：我偶然发现了同样的问题，并在这里找到了某种答案：https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features.managing.db.html
他们在那份文件中说：
您可以使用配置文件配置环境的数据库实例。使用 aws:rds:dbinstance 命名空间中的选项。以下示例将分配的数据库存储大小修改为 100 GB。
因此，OptionSettings 中的 aws:rds:dbinstance 属性仅用于修改现有数据库实例，而不是一开始就创建一个。
【讨论】：
【参考方案2】：由于命名空间方法，RDS 创建未完成。基本上命名空间用于覆盖您创建的资源的默认属性。
所以解决方案是在“SpringBootBeanStalkConfigurationTemplate”之前包含 RDS 创建模板
"Resources":
"RDS Creation":
"Type" : "AWS::RDS::DBInstance",
"Properties" :
"AllocatedStorage" : String,
"AllowMajorVersionUpgrade" : Boolean,
"AssociatedRoles" : [ DBInstanceRole, ... ],
"AutoMinorVersionUpgrade" : Boolean,
"AvailabilityZone" : String,
"BackupRetentionPeriod" : Integer,
"CharacterSetName" : String,
"CopyTagsToSnapshot" : Boolean,
"DBClusterIdentifier" : String,
"DBInstanceClass" : String,
"DBInstanceIdentifier" : String,
"DBName" : String,
"DBParameterGroupName" : String,
"DBSecurityGroups" : [ String, ... ],
"DBSnapshotIdentifier" : String,
"DBSubnetGroupName" : String,
"DeleteAutomatedBackups" : Boolean,
"DeletionProtection" : Boolean,
"Domain" : String,
"DomainIAMRoleName" : String,
"EnableCloudwatchLogsExports" : [ String, ... ],
"EnableIAMDatabaseAuthentication" : Boolean,
"EnablePerformanceInsights" : Boolean,
"Engine" : String,
"EngineVersion" : String,
"Iops" : Integer,
"KmsKeyId" : String,
"LicenseModel" : String,
"MasterUsername" : String,
"MasterUserPassword" : String,
"MonitoringInterval" : Integer,
"MonitoringRoleArn" : String,
"MultiAZ" : Boolean,
"OptionGroupName" : String,
"PerformanceInsightsKMSKeyId" : String,
"PerformanceInsightsRetentionPeriod" : Integer,
"Port" : String,
"PreferredBackupWindow" : String,
"PreferredMaintenanceWindow" : String,
"ProcessorFeatures" : [ ProcessorFeature, ... ],
"PromotionTier" : Integer,
"PubliclyAccessible" : Boolean,
"SourceDBInstanceIdentifier" : String,
"SourceRegion" : String,
"StorageEncrypted" : Boolean,
"StorageType" : String,
"Tags" : [ Tag, ... ],
"Timezone" : String,
"UseDefaultProcessorFeatures" : Boolean,
"VPCSecurityGroups" : [ String, ... ]
在此之后，您可以在其他资源中包含 RDS 参数，因为它将首先创建。
【讨论】：
感谢您的回复。我仍然不清楚在 OptionSettings 中配置“aws:rds:dbinstance”参数的目的是什么？以上是关于如何使用 CloudFormation 创建具有集成 RDS 的 AWS Elasticbeanstalk 应用程序？的主要内容，如果未能解决你的问题，请参考以下文章
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