AWS Compute Flashcards
List types of compute
- AWS App Runner
- Batch
- EC2
- EC2 Image Builder
- Elastic Beanstalk
- Lambda
- Lightsail
- AWS Outposts
- Serverless Application Repository
What are three types of compute?
- Virtual machines
- Container services
- Serverless
What is Amazon EC2?
Amazon EC2 is a web service that provides secure, resizable compute capacity in the cloud.
When launching an EC2 instance, the first setting is what?
Amazon Machine Image (AMI)
What is an AMI?
Amazon Machine Image. Essentially the blue print for how you want your EC2 configured.
EC2 instances are live instantiations of what is defined in an AMI, much like a cake is a live instantiation of a cake recipe.
An AMI is reusable. You can create many EC2 instances from the same AMI configuration.
What is the relationship between AMI and EC2 instances?
EC2 instances are live instantiations of what is defined in an AMI.
What makes up an EC2 instance?
Virtual processors
Memory
Network
Storage
Graphics processing units
List 5 Instance Families (MAGCS)
- General purpose - Provides a balance of compute, memory, and networking resources, and can be used for a variety of workloads.
- Compute optimized - Ideal for compute-bound applications that benefit from high-performance processors.
- Accelerated computing - Use hardware accelerators or co-processors to perform functions such as floating-point number calculations, graphics processing, or data pattern matching more efficiently than is possible with conventional CPUs.
- Storage optimized - Designed for workloads that require high, sequential read and write access to large data sets on local storage. They are optimized to deliver tens of thousands of low-latency random I/O operations per second (IOPS) to applications that replicate their data across different instances.
- Memory optimized - Designed to deliver fast performance for workloads that process large data sets in memory.
Where does an EC2 instance live?
Placed in a network called the default Amazon Virtual Private Cloud (VPC)
EC2 Life Cycle. Explain at a high level?
When you launch an instance, you enter the ‘pending state’
Bill has not yet started
Your instance is ‘running’, ready to use, and billable
When running, you can take other actions such as ‘reboot’, ‘terminate’, ‘stop’, and ‘stop-hibernate’.
Stop instance (powering down)
Stop hibernate (locking laptop)
Terminate (getting rid of the instance forever)
What makes up EC2 pricing?
By the hour.
5 minutes and 30 seconds = 338 seconds
What are 3 main purchasing options for EC2?
- On demand
- Reserved
- Spot instances
What is an on demand instance?
Pay as you go. Billing starts when the instance is running, and billing stops when the instance is in a stopped or terminated state.
What is a reserved instance?
You agree to a term. If stopped or terminated, you still pay because you agreed to a 1 - 3 year term.
What is a spot instance?
A price a customer is willing to pay for EC2 compute? If AWS determines the cost of EC2 compute is greater than what you are paying, your compute may be interrupted. You will get a 2 minute warning.
What is a ‘container’?
A container is a standardized unit that packages up your code and all of its dependencies. This package is designed to run reliably on any platform, because the container creates its own independent environment.
What is ‘docker’?
Docker is a container runtime that simplifies the management of the entire operating system stack needed for container isolation, including networking and storage.
What is the difference between containers and virtual machines?
Containers share the same OS and kernel as the host they exist on whereas virtual machines contain their operating system.
Containers are much quicker to spin up
Virtual machines provide the full strength of an operating system.
What is container orchestration?
When you use containers on AWS, you need processes for starting, stopping, restarting, and monitoring. All coordination is handled by orchestration. Containers run on EC2. Easy to manage 1, but many gets difficult.
What is Amazon ECS?
Amazon Elastic Container Service ECS is an end to end container orchestration service that allows you to quickly spin up new containers and manage them across a cluster of EC2 instances.
What is Amazon EKS?
A container orchestration tool for containers running on Kubernetes.
What is AWS Fargate?
AWS Fartgate is a serverless compute platform for ECS and EKS
EC2 vs. Fargate
EC2 and Fargate both run applications, but Fargate is a serverless model (by AWS), while EC2 is a managed infrastructure (by User).
What is AWS Lambda?
AWS Lambda is a serverless compute service provided by Amazon Web Services that allows you to run code in response to events without having to provision or manage servers.
Event driven
Pay pay use (number of requests and duration it takes for code to execute)
Multi language support
