AWSSSSSSS Flashcards
A virtual server
instance
A software bundle that was built from a template definition and made available within a single AWS Region
image
Amazon Machine Images (AMI) are organized into 4 collections
- The Quick Start (the available linux distributions you’ll find here are long term support (LTS) releases))
- Any Custom AMI
- AWS Marketplace (software store managed by Amazon where Vendors make their products available.
- Community AMI
**You can create your own AMIs from a snapshot based on EBS volume of an EC2 instance.
Description of the type of hardware resources your instance will be using
EC2 Instance Type
metric used to describe the compute power you’ll get from a given instance
vCPU
EC2 Instance Types determine the compute power of your instance and are divided into type families, each with their own focus on a functional niche. What are EC2 Instance Type Families
- General Purpose (A1, T3, T2, M5, M5a, M4, T3a)
- Compute Optimized (C5, C5n, C4)
- Memory Optimized (R5, R5a, R4 X1 High Memory z1d)
- Accelerated Computing (P3, P2, G3, F1)
- Storage Optimized (H1, I3, D2)
A regular EC2 Instance that, instead of sharing a physical host with other AWS customers, run on an isolated host that’s set aside exclusively for your account
Dedicated Instance
instance isolation, but in addition allows a higher level of control over how your instances will be placed and run within the host environment
Dedicated Host
What are EC2 Resources
Elastic Block Store (EBS)
EC2 Instance Store Volumes
What does Elastic Block Store (EBS) Offer
SERVER STORAGE: The physical drive where an EBS volume actually exists.
- The EBS volumes will survive shutdowns and system crashes.
- EBS volumes can be encrypted
- EBS volumes can be moved around, mounted on other instances and converted to AMIs.
Instance type compatible with this can enjoy the benefits of having their data on physical drives attached directly to the physical instance server. Disadvantages are ephemeral data, no encryption, and lack of flexability. Advantages are faster data reads and writes.
SERVER STORAGE: Instance Store Volumes
EC2 Pricing that’s best for workloads that need to run for a limited time without interruption. Most expensive model because you pay for every hour the instance is running
On Demand Instances
If your application needs to run uninterrupted for more than a month at a time. 1 and 3 year terms are available Can be paid using an All Upfront, Partial Upfront or No UpFront payment option
Reserve Instances
For workloads that don’t need to run constantly and can survive upexpected shutdowns. Down side is that the capacity can on two minutes notice be reclaimed by shutting down your instance. Cheapest option. Perfect for certain classes of containerized big data workloads or test and deployment environments.
Spot Instances
Spot deployments can be automated by defining your capacity and pricing needs as part of this
Spot Fleet
AWS will handle most of your underlying infrastructure. One example is Relational Database Service (RDS). Handles only one part of your deployment for you.
Managed Services