[英]CloudFormation conditional EMR instances
我在 CF 模板中使用條件語句時遇到了一些困難,我想以最簡潔的方式有條件地指定 EMR 集群實例組或隊列。
這構建沒有錯誤。 如果是 prod,它會選擇使用實例組,如果不是 prod,它會選擇使用實例隊列,使用兩個單獨的條件:
Parameters:
EnvironmentName:
Type: String
Description: 'Example: ci, qa, stage, prod'
Conditions:
IsPreProd: !Or
[!Equals [!Ref EnvironmentName, ci], !Equals [!Ref EnvironmentName, qa]]
IsProd: !Or
[!Equals [!Ref EnvironmentName, stage], !Equals [!Ref EnvironmentName, prod]]
Resources:
EMRCluster:
Type: 'AWS::EMR::Cluster'
Properties:
Instances:
CoreInstanceGroup:
!If
- IsProd
- InstanceCount: 1
InstanceType: m5.8xlarge
Market: ON_DEMAND
Name: CoreInstance
- !Ref "AWS::NoValue"
CoreInstanceFleet:
!If
- IsPreProd
- InstanceTypeConfigs:
- InstanceType: m5.8xlarge
TargetOnDemandCapacity: 1
TargetSpotCapacity: 1
LaunchSpecifications:
SpotSpecification:
TimeoutAction: SWITCH_TO_ON_DEMAND
TimeoutDurationMinutes: 10
- !Ref "AWS::NoValue"
我只想使用一個條件,如下所示,除了構建失敗告訴我“如果”所在的行上的“YAML 格式不正確”。 如果我像上面那樣實現它,我最終會得到四個單獨的條件,因為我還必須添加主實例組或隊列。 是否有可能將這一切作為一個條件?
Parameters:
EnvironmentName:
Type: String
Description: 'Example: ci, qa, stage, prod'
Conditions:
IsProd: !Or
[!Equals [!Ref EnvironmentName, stage], !Equals [!Ref EnvironmentName, prod]]
Resources:
EMRCluster:
Type: 'AWS::EMR::Cluster'
Properties:
Instances:
- !If
- IsProd
- CoreInstanceGroup:
InstanceCount: 1
InstanceType: m5.8xlarge
Market: ON_DEMAND
Name: CoreInstance
- CoreInstanceFleet:
InstanceTypeConfigs:
- InstanceType: m5.8xlarge
TargetOnDemandCapacity: 1
TargetSpotCapacity: 1
LaunchSpecifications:
SpotSpecification:
BlockDurationMinutes: 60
TimeoutAction: SWITCH_TO_ON_DEMAND
TimeoutDurationMinutes: 10
Instances
不是一個列表。 你不需要-
before !If
:
Resources:
EMRCluster:
Type: 'AWS::EMR::Cluster'
Properties:
Instances:
!If
- IsProd
- CoreInstanceGroup:
InstanceCount: 1
InstanceType: m5.8xlarge
Market: ON_DEMAND
Name: CoreInstance
- CoreInstanceFleet:
InstanceTypeConfigs:
- InstanceType: m5.8xlarge
TargetOnDemandCapacity: 1
TargetSpotCapacity: 1
LaunchSpecifications:
SpotSpecification:
BlockDurationMinutes: 60
TimeoutAction: SWITCH_TO_ON_DEMAND
TimeoutDurationMinutes: 10
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