Operations Flashcards
What are the granularity options in CloudWatch for metrics resolution (in seconds)?
60 seconds with Standard Resolution
1 second with High Resolution
How long are data points with a granularity < 60 seconds retained in CloudWatch (retention period)?
3 hours
How long are data points with a granularity of 1 minute retained in CloudWatch (retention period)?
15 days
How long are data points with a granularity of 5 minutes retained in CloudWatch (retention period)?
63 days
How long are data points with a granularity of 1 hour retained in CloudWatch (retention period)?
455 days
When exporting logs from CloudWatch Logs to S3 via CreateExportTask, how much time does that typically take?
Up to 12 hours
What do you need to do to export CloudWatch Logs in real-time? And what are some common targets for the real-time export?
Set up a CloudWatch subscription filter. Then sent logs to a receiving service such as Lambda, Kinesis or Kinesis Firehose.
What would you typically use a Metric Filter for in CloudWatch Logs?
To scan log data and generate a CloudWatch Metric based on that data.
For how many days does CloudTrail store events by default?
90 days
What two type of events are available in CloudTrail?
Management events and Data events
Does CloudTrail log Management events, or Data events, or both, by default?
Only Management events
How quickly are events available in CloudTrail?
Typically within minutes (so not realtime!)
What AWS services are available for Data events in CloudTrail?
S3 and Lambda
When activating Cost Allocation Tags, what do you have to keep in mind?
They’re not applied retro-actively, and it can take up to 24h before they become visible.
What are the 5 areas that Trusted Advisor provides assistance for?
- Cost Optimization
- Performance
- Security
- Fault Tolerance
- Service Limits
