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Merged
farski merged 1 commit into from
May 4, 2026
Merged

Add app redis memory alarms #895

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4 changes: 2 additions & 2 deletions spire/templates/dovetail-redis/cluster.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -82,7 +82,7 @@ Resources:
Properties:
AlarmName: !Sub WARN [Common] Redis <${EnvironmentTypeAbbreviation}> HIGH MEMORY USAGE
AlarmDescription: !Sub >-
${EnvironmentType} shared Redis's database memory usage has exceeded
${EnvironmentType} Dovetail Redis's database memory usage has exceeded
the recommended safe level
ComparisonOperator: GreaterThanThreshold
EvaluationPeriods: 2
Expand Down Expand Up @@ -135,7 +135,7 @@ Resources:
Properties:
AlarmName: !Sub ERROR [Common] Redis <${EnvironmentTypeAbbreviation}> VERY HIGH MEMORY USAGE
AlarmDescription: !Sub >-
${EnvironmentType} shared Redis's database memory usage has reached a
${EnvironmentType} Dovetail Redis's database memory usage has reached a
critically high level
ComparisonOperator: GreaterThanThreshold
EvaluationPeriods: 2
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79 changes: 79 additions & 0 deletions spire/templates/shared-app-redis.yml
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Expand Up @@ -106,6 +106,85 @@ Resources:
- { Key: prx:dev:application, Value: Common }
TransitEncryptionEnabled: true

RedisMemoryLowAlarm:
Type: AWS::CloudWatch::Alarm
Condition: IsPrimaryRegion
Properties:
AlarmName: !Sub WARN [Common] App Redis <${EnvironmentTypeAbbreviation}> HIGH MEMORY USAGE
AlarmDescription: !Sub >-
${EnvironmentType} shared app Redis's database memory usage has
exceeded the recommended safe level
ComparisonOperator: GreaterThanThreshold
EvaluationPeriods: 2
Metrics:
- Id: node1
MetricStat:
Metric:
Dimensions:
- Name: CacheClusterId
Value: !Sub ${SharedAppRedisReplicationGroup}-001
- Name: CacheNodeId
Value: "0001"
MetricName: DatabaseMemoryUsagePercentage
Namespace: AWS/ElastiCache
Period: 120
Stat: Maximum
Unit: Percent
ReturnData: false
- Id: max
Expression: "MAX(METRICS())"
ReturnData: true
Tags:
- { Key: prx:meta:tagging-version, Value: "2021-04-07" }
- { Key: prx:cloudformation:stack-name, Value: !Ref AWS::StackName }
- { Key: prx:cloudformation:stack-id, Value: !Ref AWS::StackId }
- { Key: prx:cloudformation:root-stack-name, Value: !Ref RootStackName }
- { Key: prx:cloudformation:root-stack-id, Value: !Ref RootStackId }
- { Key: prx:ops:environment, Value: !Ref EnvironmentType }
- { Key: prx:dev:application, Value: Common }
Threshold: 85
TreatMissingData: notBreaching

RedisMemoryVeryLowAlarm:
Type: AWS::CloudWatch::Alarm
Condition: IsPrimaryRegion
Properties:
AlarmName: !Sub ERROR [Common] App Redis <${EnvironmentTypeAbbreviation}> VERY HIGH MEMORY USAGE
AlarmDescription: !Sub >-
${EnvironmentType} shared app Redis's database memory usage has reached
a critically high level
ComparisonOperator: GreaterThanThreshold
EvaluationPeriods: 2
Metrics:
- Id: node1
MetricStat:
Metric:
Dimensions:
- Name: CacheClusterId
Value: !Sub ${SharedAppRedisReplicationGroup}-001
- Name: CacheNodeId
Value: "0001"
MetricName: DatabaseMemoryUsagePercentage
Namespace: AWS/ElastiCache
Period: 120
Stat: Maximum
Unit: Percent
ReturnData: false
- Id: max
Expression: "MAX(METRICS())"
ReturnData: true
Tags:
- { Key: prx:meta:tagging-version, Value: "2021-04-07" }
- { Key: prx:cloudformation:stack-name, Value: !Ref AWS::StackName }
- { Key: prx:cloudformation:stack-id, Value: !Ref AWS::StackId }
- { Key: prx:cloudformation:root-stack-name, Value: !Ref RootStackName }
- { Key: prx:cloudformation:root-stack-id, Value: !Ref RootStackId }
- { Key: prx:ops:environment, Value: !Ref EnvironmentType }
- { Key: prx:dev:application, Value: Common }
Threshold: 93
TreatMissingData: notBreaching


Outputs:
CacheName:
Value: !If [IsPrimaryRegion, !Ref SharedAppRedisReplicationGroup, ""]
Expand Down