Cloud Monitoring

Question 1

Amazon CloudWatch Metrics

Answer 1

Metrics for all AWS services like CPUUtilization, Network, Billing(only US East 1)
EC2 Instances: CPU utilization, status checks, network (not RAM), Default every 4 mins
EBS Volume: Disk Read/Writes
etc

Question 2

AWS Cloudwatch alarms

Answer 2

Used to trigger notifications for any metric.
Auto scaling: Inc/Dec EC2 instances to “desired” count
EC2 actions: stop/terminate/reboot/recover an EC2 instance
SNS Notification: send a notification to an SNS topic
Alarm States: OK, INSUFFICIENT_DATA, ALARM