Amazon EC2 – Instance Storage

Maarek SAA-C03 Slides v45 — Chapter 5. Personal study extract.

Key content

SSH Summary Table
Mac
Linux
Windows < 10
Windows >= 10
SSH Putty EC2 Instance
Connect
Which Lectures to watch
SSH troubleshooting
1. Re-watch the lecture. You may have missed something
1. Read the troubleshooting guide
1. Try EC2 Instance Connect
good
How to SSH into your EC2 Instance
Linux / Mac OS X
remote machine, all using the command line.
the SSH into our EC2 instances
EC2 Instance
Linux
Public IP
SSH
– Port 22
WWW
How to SSH into your EC2 Instance
Windows
remote machine, all using the command line.
on Windows using the free tool Putty.
EC2 Instance
Linux
Public IP
SSH
– Port 22
WWW
EC2 Instance Connect
EC2 Instances Purchasing Options
EC2 On Demand
you can't predict how the application will behave
EC2 Reserved Instances
change them over time – the exact numbers are not needed
for the exam. This is just for illustrative purposes J
EC2 Savings Plans
EC2 Spot Instances
current spot price
EC2 Dedicated Hosts
bound software licenses (per-socket, per-core, pe—VM software licenses)
Own License)
EC2 Dedicated Instances
dedicated to you
instances in same account
(can move hardware after Stop / Start)
EC2 Capacity Reservations
duration
from billing discounts
specific AZ
Which purchasing option is right for me?
whenever we like, we pay the full price
stay for a long time, we may get a good discount.
certain period and stay in any room type (e.g.,
King, Suite, Sea View, …)
the empty rooms and the highest bidder keeps the
rooms. You can get kicked out at any time
the resort
period with full price even you don't stay in it
Price Comparison
Example – m4.large – us-east-1
Price Type Price (per hour)
On-Demand $0.10
Spot Instance (Spot Price) $0.038 - $0.039 (up to 61% off)
Reserved Instance (1 year) $0.062 (No Upfront) - $0.058 (All Upfront)
Reserved Instance (3 years) $0.043 (No Upfront) - $0.037 (All Upfront)
EC2 Savings Plan (1 year) $0.062 (No Upfront) - $0.058 (All Upfront)
Reserved Convertible Instance (1 year) $0.071 (No Upfront) - $0.066 (All Upfront)
Dedicated Host On-Demand Price
Dedicated Host Reservation Up to 70% off
Capacity Reservations On-Demand Price
EC2 Spot Instance Requests
with a 2 minutes grace period.
EC2 Spot Instances Pricing
User-defined max price
How to terminate Spot Instances?
You can only cancel Spot Instance requests that are open, active, or disabled.
Cancelling a Spot Request does not terminate instances
You must first cancel a Spot Request, and then terminate the associated Spot Instances
Spot Fleets
the pool with the lowest price (best choice for most workloads)
Amazon EC2 – Associate
Private vs Public IP (IPv4)
Company B
Private Network
192.168.0.1/22
Company A
Private Network
192.168.0.1/22
Private vs Public IP (IPv4)
Example
Internet Gateway (public):
149.140.72.10
Web Server (public):
79.216.59.75
Server (public):
211.139.37.43
Internet Gateway (public):
253.144.139.205
WWW
Private vs Public IP (IPv4)
Fundamental Differences
Elastic IPs
IP.
Elastic IP
Elastic IP
by rapidly remapping the address to another instance in your account.
that).
Private vs Public IP (IPv4)
In AWS EC2 – Hands On
the public IP can change
Placement Groups
strategies for the group:
group per AZ)
different sets of racks) within an AZ. Scales to 100s of EC2 instances per group
(Hadoop, Cassandra, Kafka)
Same AZ
Placement Groups
Cluster
Networking enabled - recommended)
EC2 EC2
EC2 EC2 EC2
EC2 Placement group
Cluster
Low latency
10 Gbps network
Us-east-1a
Hardware 1
Placement Groups
Spread • Pros:
Zones (AZ)
failure
physical hardware
per placement group
maximize high availability
each instance must be isolated
from failure from each other
EC2
Hardware 2
EC2
Us-east-1b
Hardware 3
EC2
Hardware 4
EC2
Us-east-1c

…180 more lines in source.

Study checklist

Read chapter once in English (no full translation)
Add 7–10 terms → /admin/aws-english/vocab
Practice 5 questions → /admin/aws-english/reader (tags: aws, ec2, ebs)
SRS review → /flashcards/aws-english