Defining A CloudWatch Alarm Amazon CloudWatch Alarms – Watch a single metric over to see if it crosses a thresh-hold over a time period – all of which you specify (i.e metric, timeperiod(s), and thresh-hold). When A CloudWatch Alarm Fires CloudWatch alarms only fire with state change – in other words – the state must …
Per Amazon as of 05/20/2018: https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/cloudwatch_concepts.html Metrics Retention CloudWatch retains metric data as follows: Data points with a period of less than 60 seconds are available for 3 hours. These data points are high-resolution custom metrics. Data points with a period of 60 seconds (1 minute) are available for 15 days Data points with a …
Cloudwatch Metric Retention Periods – Per Amazon – Read More »