Ravi Sir's Cards › AWS
CloudWatch alarms
What is a VPC: your own private network inside one AWS Region, example ThreeTierVpc 10.0.0.0/16.
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Why do we need it?
You cannot watch graphs all day.
What is it?
Alarm = threshold + periods + SNS action.
put-metric-alarm
How to do it
States: OK, ALARM, INSUFFICIENT_DATA.
Example
Test with set-alarm-state.
--state-value ALARM