[AWS Cloud Practitioner(CLF-C01)] Cloud Concept 4편 - AmazonEC2

Amazon EC2

-EC2 is one of the most popular of AWS' offering

-EC2 = Elastic Compute Cloud = Infrastructure as a Service

-It mainly consists in the capability of :

• Reing virtual machines(EC2)
• Storing data on virtual drivers(EBS)
• Disturbuting load accross machines(ELB)
• Scaling the services using an auto-scaling group(ASG)

-Knowing EC2 is fundamental to unserstand how the Clour works

 

-EC2 클라우드에서 안전하고 규모 조정이 가능한 컴퓨팅 파워를 제공하는 웹서비스(탄력적인 웹 규모 컴퓨팅, 인스턴스 완전 제어, 유연한 클라우드 호스팅 서비스

 

 

EC2 sizing & configuration options

• Operating System(OS): Linux, Windows or Mac OS
• How much compute power & cores(CPU)
• How much randomg-access memory(RAM)
• How much storage space:

          -Network-attached(EBS & EFS)

          - hardware (EC2 Instance Store)

• Network card : speed of the card, Public IP address
• Firewall rules : security group
• Bootstrap script (configure at first launch): EC2  User Data

 

EC2 User Data

• It is possible to Bootstrap our instance using an EC2 User data script.
• Bootstrapping means launching commands when a machine start.
• Thar script is only run once at the instance first start.