Monitoring CakePHP logs with CloudWatch & Elastic Beanstalk

cwl-cake-errors.config

Mappings:
  CWLogs:
    CakeErrorLogGroup:
      LogFile: "/var/www/html/project/tmp/logs/error.log"
      TimestampFormat: "%m-%d-%Y %H:%M:%S"
    FilterPatterns:
      AllCakeErrorsFilter: "[timestamp, type = *Error*, ...]"


Outputs:
  CakeErrorCWLogGroup:
    Description: "Cake error log - CakeErrorCWLogGroup"
    Value: { "Ref" : "AWSEBCloudWatchLogsCakeErrorLogGroup"}


Resources :
  AWSEBCloudWatchLogsCakeErrorLogGroup:
    Type: "AWS::Logs::LogGroup"
    DependsOn: AWSEBBeanstalkMetadata
    DeletionPolicy: Retain     ## this is required
    Properties:
      LogGroupName:
        "Fn::GetOptionSetting":
          Namespace: "aws:elasticbeanstalk:application:environment"
          OptionName: CakeErrorCWLogGroup
          DefaultValue: {"Fn::Join":["-", [{ "Ref":"AWSEBEnvironmentName" }, "cakeerrors"]]}
      RetentionInDays: 14


  AWSEBAutoScalingGroup:
    Metadata:
      "AWS::CloudFormation::Init":
        CWLogsAgentConfigSetup:
          files:
            "/tmp/cwlogs/conf.d/cake-error.conf":
              content : |
                [cake-error_log]
                file = `{"Fn::FindInMap":["CWLogs", "CakeErrorLogGroup", "LogFile"]}`
                log_group_name = `{ "Ref" : "AWSEBCloudWatchLogsCakeErrorLogGroup" }`
                log_stream_name = {instance_id}
                datetime_format = `{"Fn::FindInMap":["CWLogs", "CakeErrorLogGroup", "TimestampFormat"]}`
              mode  : "000400"
              owner : root
              group : root


  AWSEBCWLAllCakeErrorsFilter :
    Type : "AWS::Logs::MetricFilter"
    Properties :
      LogGroupName: { "Ref" : "AWSEBCloudWatchLogsCakeErrorLogGroup" }
      FilterPattern : {"Fn::FindInMap":["CWLogs", "FilterPatterns", "AllCakeErrorsFilter"]}
      MetricTransformations :
        - MetricValue : 1
          MetricNamespace: {"Fn::Join":["/", ["ElasticBeanstalk", {"Ref":"AWSEBEnvironmentName"}]]}
          MetricName : CWLAllErrorRecords


  AWSEBCWLAllCakeErrorsCountAlarm :
    Type : "AWS::CloudWatch::Alarm"
    DependsOn : AWSEBCWLAllCakeErrorsFilter
    Properties :
      AlarmDescription: "Cake generated an error in /var/www/html/project/logs/errors.log"
      MetricName: CWLAllErrorRecords
      Name: {"Fn::Join":["-", ["ElasticBeanstalk-AWSEBCWLAllCakeErrorsCountAlarm", {"Ref":"AWSEBEnvironmentName"}]]}
      Namespace: {"Fn::Join":["/", ["ElasticBeanstalk", {"Ref":"AWSEBEnvironmentName"}]]}
      Statistic: Sum
      Period: 60
      EvaluationPeriods: 1
      Threshold: 0
      ComparisonOperator: GreaterThanThreshold
      AlarmActions:
        - "Fn::If":
            - SNSTopicExists
            - "Fn::FindInMap":
                - AWSEBOptions
                - options
                - EBSNSTopicArn
            - { "Ref" : "AWS::NoValue" }

Hey, I was using this config in my EB and found that the creation of the environment failed because of line 64 with the error:

"Creating CloudWatch alarm failed Reason: Encountered unsupported property Name"

It looks like the property "Name" should be "AlarmName" for it to work.