CloudWatch Metrics & CloudWatch Alarms

Question 1

What is CloudWatch?

Answer 1

CloudWatch provides metrics for every service in AWS.

Question 2

What is a CloudWatch metric?

Answer 2

A metric is a variable to monitor that has a timestamp.

Question 3

What are 3 important metrics?

Answer 3

EC2 = CPU Utilization, Status Checks, Network (not RAM)

EBS Volumes = Disk read/writes

S3 buckets = BucketSize, Number of Objects, etc.

Billing = Estimated charges for your account

Service Limits

Question 4

What is CloudWatch Alarms?

Answer 4

Used to trigger notifications for any metrics.

Question 5

What is CloudWatch Logs?

Answer 5

CloudWatch Logs collects logs from different sources such as Beanstalk, ECS, Lambda, CloudTrail, CloudWatch log agents, and is used for real-time log monitoring.

Question 6

How does CloudWatch Logs work with EC2?

Answer 6

Install a CloudWatch logs agent to the EC2 to push log files.

Make sure IAM permissions are correct.

Question 7

What is CloudWatch Events?

Answer 7

A way for you to react to events happening in AWS.