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 examples require the CloudWatch command line tools. For more
information about CloudWatch and to download the developer tools, see the
CloudWatch product page
The following procedures show you how to use CloudWatch to gather storage space statistics for an cache cluster for the past hour.
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 gather CPU utilization statistics for a cache cluster
-
Sign in to the AWS Management Console and open the ElastiCache console at https://console.aws.amazon.com/elasticache/
. -
Select the cache nodes you want to view metrics for.
Note
Selecting more than 20 nodes disables viewing metrics on the console.
-
On the Cache Clusters page of the AWS Management Console, click the name of one or more cache clusters.
The detail page for the cache cluster appears.
-
Click the Nodes tab at the top of the window.
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On the Nodes tab of the detail window, select the cache nodes that you want to view metrics for.
A list of available CloudWatch Metrics appears at the bottom of the console window.
-
Click on the CPU Utilization metric.
The CloudWatch console will open, displaying your selected metrics. You can use the Statistic and Period drop-down list boxes and Time Range tab to change the metrics being displayed.
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Monitoring CloudWatch Cluster and Node Metrics using the CloudWatch 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-time2018-07-05T00:00:00
\ --end-time2018-07-06T00:00:00
\ --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-time2018-07-05T00:00:00
^ --end-time2018-07-06T00:00:00
^ --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
=2013-07-05T00:00:00
-
EndTime
=2013-07-06T00:00:00
-
Period
=60
-
MeasureName
=CPUUtilization
-
Dimensions
=CacheClusterId=mycachecluster,CacheNodeId=0002
Example
http://monitoring.amazonaws.com/ ?Action=GetMetricStatistics &SignatureVersion=4 &Version=2014-12-01 &StartTime=2018-07-05T00:00:00 &EndTime=2018-07-06T23:59:00 &Period=3600 &Statistics.member.1=Average &Dimensions.member.1="CacheClusterId=mycachecluster" &Dimensions.member.2="CacheNodeId=0002" &Namespace=&AWS;/ElastiCache &MeasureName=CPUUtilization &Timestamp=2018-07-07T17%3A48%3A21.746Z &AWS;AccessKeyId=<&AWS; Access Key ID> &Signature=<Signature>
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