EC2

Virtualization

• Overall:
  • EC2 are virtual machines (OS+resources)
  • Amazon machine image refers initial software configuration of an instance
  • EC2 instances run on EC2 shares/ dedicated host
  • AZ resilient, hosts = 1 AZ
  • instances+EBS /volume can only be contained in the same AZ, cannot be transferred across AZ
  • if an instance stop and start again (not restarting), the host will be different but within the same AZ
  • Although a public IP address is associated with the EC2 server, the public address is not configured on the server itself. Instead, your VPC’s Internet Gateway has the public address and it performs address translation.
  • Use case
    • traditional OS+application compute
    • long-running compute (for years)
    • server style application
    • need burst/ steady-state load
    • monolithic application stacks
    • migrated application workloads/ disaster recovery

Connection

Scaling

EC2 Instance Type

EBS and instance Storage

Network interfaces, Instance IPs and DNS

Amazon Machine Image (AMI)

EC2 Purchase Options

Instance status checks, Auto-recovers & Termination

Instance Metadata

EC2 instance store

Bootstrapping using User Data

Instance Roles & Profile

SSM parameter Store

System and application logging

Placement Groups

Enhanced networking & EBS Optimized