CloudWatch

Question 1

What services does CloudWatch provide?

Answer 1

Storage and access to log data from AWS services (some require a CloudWatch Agent). CloudWatch creates metrics based on logs which can be used to create CloudWatch Alarms that can trigger actions when metrics meet certain criteria.

Question 2

What is a Log Stream?

Answer 2

An ordered set of log events from a source.

Question 3

What is a Log Group?

Answer 3

A collection of Log Streams that logically related.

Question 4

Where are CloudWatch retention policies set?

Answer 4

On a Log Group, which makes it apply to all Log Streams within that Log Group.