Amazon CloudWatch

Monitoring all the components created in AWS.

RDS not out of storage. Check free stprage space in cloudwatch.
YMetrics are at hypervisor level, you cannot see memory metrics.

Status Check

Syatem status check: Physical box(server) where all VMS are hosted

Instance status check: VM

If issues, try rebooting the servers. Log a case with Amazon.

No additional charge for 5 mins interval. Basic monitoring is up tp 5 mins and is free. Granular level less than 5 min (up to 1min) the detailed/enhanced monitoring is chargeable.

Basic monitoring includes CPU load, disk I/O, and network I/O metrics; these are collected at five-minute intervals and stored for two week.

Memory monitoring: Not comes by default. Additional memory agent installation required, Memory monitor agents need to be installed on the instances then the memory can be monitored.

Create Aarm: Send notification to Topic. SNS, Simple notification service.

Amazone SNS: Pub/Sub or push notification service

Publisher -> [SNS Topic ]-Subscribers()

Subscribers// Lamda, SQS, HTTP/S, Email, SMS

EC2 Instances-> Create an Alarm à send notification to SNS topic // 

Trigger condition: Whenever CPU utilization goes up and down to x%

Take Action: Stop/Reboot/Recover the instances…

Dashboard

Metrics graph: select the metrics ->  Per Instance/individual m/c Auto scaling group metric,enter in the instance id.. / Select the metric name

Pricing:

1 Millon mobile push notification/ 100 sms/ 1000 email, 100,000 htts. Lambada/SQS notification free