Amazon Simple Notification Service (SNS)

• SNS is a managed service that provides message delivery to subscribers.
• Publisher communicate asynchronously with subscribers by sending messages to a topic, which is a logical access point and Communication Channel
• Lets create an SNS Topic
• Now lets add some email subcriptions. Note: you need to confirm email subscriptions
• Use the topic admin alerts when your cpu is underused

Activity 2: Create an alert in AWS when your ec2 is overused

• Lets understand overusage
  • When CPU utilization > 85% for the last 10 minutes
• Actions -> Reboot the System
• Notification -> Send the notification to your admin team.
• After creating the alarm, we can create artificial stress
  • Install a tool called as ‘stress’

  sudo apt install stress
  
  # amazon linux
  sudo amazon-linux-extras install epel -y
  sudo yum install stress -y
  

  • Now run the command stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 100m -v
• You will recieve email alert as well.