First Weapon of John: CloudWatch

• Cloudwatch will help john to monitor AWS resources & applications
• Cloudwatch is a metrics repository & AWS Services can add/send metrics into the repository or you can send custom metrics into repository
• Now we can retrieve statistics based on metrics. Using statistics we can create notifications for failures, warnings etc

Terms in Cloudwatch

• Metrics: Metric represents a time-ordered set of data points that are published to Cloudwatch.
• Timestamp: Each metric will be associated with a timestamp
• Namespace: Namespace is container for Cloudwatch metrics. You should specify the namespace for data point which you publish. AWS namespaces use the following naming conventions AWS/service Eg. AWS/EC2
• Statistics: Data aggregations supported over specific periods of time. Lets look at the possible statistics
  • Minimum: lowest value observed during specific period
  • Maximum
  • Sum
  • Average
  • Sample Count: The number of data points used in this statistic
  • pNN.NN: The percentile
• Alarm: We use alarms to automatically initiate actions (restart the machine, send an email/sms, call some code etc..).
• Every Metric is one of
  • Standard Resolution: Metric data with granularity of one-minute
  • High Resolution: Metric data with granularity of one-second

Lets see the available Metrics

• Login into AWS Console & Navigate to CloudWatch
• Select the Metrics and Have a look at the Sections

Quick Exercise

1. Create an ec2 instance and Navigate to the monitoring section
2. Select any graph and view in metrics

Pricing of Amazon CloudWatch

• Refer Here for official pricing

Free tier usage tracking

• Refer Here