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Monitoring CloudWatch Cluster and Node Metrics - Amazon ElastiCache
Monitoring CloudWatch Cluster and Node Metrics (Console)Monitoring CloudWatch Cluster and Node Metrics using the AWS CLIMonitoring CloudWatch Cluster and Node Metrics using the CloudWatch API

Monitoring CloudWatch Cluster and Node Metrics

ElastiCache and CloudWatch are integrated so you can gather a variety of metrics. You can monitor these metrics using CloudWatch.

Note

The following command line examples use the AWS Command Line Interface (AWS CLI). For more information, see the AWS Command Line Interface User Guide.

The following procedures show you how to use CloudWatch to gather CPU utilization statistics for a cluster.

Note

The StartTime and EndTime values supplied in the examples below are for illustrative purposes. You must substitute appropriate start and end time values for your cache nodes.

For information on ElastiCache limits, see AWS Service Limits for ElastiCache.

Monitoring CloudWatch Cluster and Node Metrics (Console)

To view metrics for the nodes in a cluster

  1. Sign in to the AWS Management Console and open the ElastiCache console at https://console.aws.amazon.com/elasticache/.

  2. From the navigation pane, choose Valkey caches, Redis OSS caches, or Memcached caches, depending on the engine of your cluster.

  3. Choose your cluster.

  4. Choose the Metrics tab.

    The charts show the metrics for the nodes in the cluster. For a Valkey cluster with more than 16 nodes, the charts show the first 16 nodes by default.

    Note

    The Metrics tab charts up to 16 nodes at a time.

  5. (Valkey only, optional) To choose which nodes to chart, use the Node ID or Shard ID filter.

    If the filter matches more than 16 nodes, the console shows Cannot select more than 16 nodes. To see other nodes, change the filter, for example, to Shard ID = 0003.

  6. (Redis OSS and Memcached only) To choose which nodes to chart, choose Compare nodes, and then select the nodes.

    For a cluster with more than 16 nodes, the charts show no metrics until you choose the nodes to chart.

(Valkey only) The Metrics tab has two views. The Classic view, which is the default, shows CloudWatch metrics. The Detailed view shows OpenTelemetry metrics, and appears only in Regions where detailed monitoring is available. For more information about the Detailed view, see Monitoring ElastiCache with OpenTelemetry metrics.

Monitoring CloudWatch Cluster and Node Metrics using the AWS CLI

To gather CPU utilization statistics for a cache cluster

  • For Linux, macOS, or Unix:

    aws cloudwatch get-metric-statistics \
    --namespace AWS/ElastiCache \
    --metric-name CPUUtilization \
    --dimensions='[{"Name":"CacheClusterId","Value":"test"},{"Name":"CacheNodeId","Value":"0001"}]' \
    --statistics=Average \
    --start-time 2018-07-05T00:00:00 \
    --end-time 2018-07-06T00:00:00 \
    --period=3600

    For Windows:

    aws cloudwatch get-metric-statistics ^
    --namespace AWS/ElastiCache ^
    --metric-name CPUUtilization ^
    --dimensions Name=CacheClusterId,Value=test Name=CacheNodeId,Value=0001 ^
    --statistics=Average ^
    --start-time 2018-07-05T00:00:00 ^
    --end-time 2018-07-06T00:00:00 ^
    --period=3600

Monitoring CloudWatch Cluster and Node Metrics using the CloudWatch API

To gather CPU utilization statistics for a cache cluster

  • Call the CloudWatch API GetMetricStatistics with the following parameters (note that the start and end times are shown as examples only; you will need to substitute your own appropriate start and end times):

    • Statistics.member.1=Average

    • Namespace=AWS/ElastiCache

    • StartTime=2018-07-05T00:00:00

    • EndTime=2018-07-06T23:59:00

    • Period=3600

    • MetricName=CPUUtilization

    • Dimensions.member.1.Name=CacheClusterId

    • Dimensions.member.1.Value=mycachecluster

    • Dimensions.member.2.Name=CacheNodeId

    • Dimensions.member.2.Value=0002

    Example
    
https://monitoring.amazonaws.com/
    ?Action=GetMetricStatistics
    &SignatureVersion=4
    &Version=2010-08-01
    &StartTime=2018-07-05T00:00:00
    &EndTime=2018-07-06T23:59:00
    &Period=3600
    &Statistics.member.1=Average
    &Dimensions.member.1.Name=CacheClusterId
    &Dimensions.member.1.Value=mycachecluster
    &Dimensions.member.2.Name=CacheNodeId
    &Dimensions.member.2.Value=0002
    &Namespace=AWS/ElastiCache
    &MetricName=CPUUtilization
    &Timestamp=2018-07-07T17%3A48%3A21.746Z
    &SignatureMethod=HmacSHA256
    &X-Amz-Credential=<credential>