Highly Available Web Server with CloudWatch Alarms

VPC Dashboard
Create VPC window
VPC subnet
AWS Services
Launch configuration
Launch configuration
User Data w/ Script
Security groups
Launch configuration
Settings
Advanced Settings
Group size and scaling policies

Adding a CPU Utilization Policy for Scaling-In and Scaling-Out through CloudWatch:

  1. Select the Auto Scaling group you created
  2. Click the Automatic scaling tab then, Add policy
Auto Scaling groups
Adding Scaling policy
Metrics
Selecting Metric
Metric group
Metric list
Metric conditions
Notification settings
Naming and description
Instances while testing failover

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