EC2

EC2

1. Types

   • On-Demand
     • Fixed rate
   • Reserved
     • Discount with contract
   • Spot
     • Bidding
   • Dedicated
     • Good for licensing

2. Families

   • Dr McGift PX

3. EBS

   • Disks, block-based
     • Root volume not encrypted
   • Types
     • Magnetic
       • Throughput
       • Cold
       • Standard
     • SSD
       • General
       • Provisioned IOPS
   • 1 EBS to 1 volume
   • Default root terminated if EC2 terminated

4. Security Groups

   • Inbound blocked by default
   • Stateful
   • If inbound, outbound auto-added
   • Can't deny IPs

5. ELB

   • Application - layer 7
   • Classic - Layer 4
   • AWS resolves DNS for you

6. CloudWatch

   • Dashboards & Widgets
   • Default Metrics. Can make own
   • Monitoring = 5 min. Can make 1 min
   • Logging and monitoring
     • CloudTrail for auditing

7. General

   • Instance Metadata
     • http://169.254.169.254/latest/meta-data/
   • ASG
     • Alarm triggers
   • Placement Groups
     • Logical grouping of instances in AZ
       • Low-latency in group
   • EFS
     • Elastic capacity
     • Same SG as instance attached to

8. Lambda

   • Scales out, not up
   • Types of triggers
   • Charged: Duration, num requests

9. API Gateway

   • CORS for S3 website
     • Different domain to APIG
   • URL Query String Param - pass vars

10. Alexa Skill

    • Echo = HW
    • Voice = Alexa
    • Up to 90 sec
    • Checklist
      • Invocation Name
      • Intent
      • Build Model
      • Endpoint