EC2 Flashcards
root drive prequisites (3)
EC2 Hibernate
drive is EBS
encrypted
large enough to have free space for RAM dump
EC2 Hibernate
Hibernate
EC2
Stops instance and dumps RAM to disk
EC2
limitation
ENI
bound to 1 AZ
ENI
interaction with instances
ENI
can be attached and detached on the fly
ENI
key feature
ENI
can be created indepedently
ENI
Attributes (4)
ENI
private IPv4 address
EIP or public IPv4 address
security groups
MAC addresses
ENI
ENI
EC2
Elastic Network Interface
logical component that represents a vNIC
EC2
load balancing
Auto Scaling Group
handled by ELB
Auto Scaling Group
region redundancy
Auto Scaling Group
may use more than one AZ in a region
Auto Scaling Group
how groups are monitored
Auto Scaling Group
health checks
Auto Scaling Group
Config options (3)
Auto Scaling Group
- minimum
- maximum
- desired number of instances
Auto Scaling Group
Auto Scaling Group
EC2
template that defines group config
EC2
Benefits (2)
EIP
persists after hard restart
freely movable to other instance
EIP
Assignment
EIP
Only to one instance at a time
EIP
Elastic IP (EIP)
EC2
IP owned as long as it’s not deleted
EC2
Instance IPv4 options (3)
EC2
Public IP
Private IP
Elastic IP
EC2
Key pair
EC2
public key and private key used to access SSH (Linux) or Administrator password (Windows)
EC2
Tag
EC2
key-value pair that assignes information to an instance
EC2
Key features (3)
AMI
Customizable
sharable
available on the AMI Marketplace
AMI
Amazon Machine Image (AMI)
EC2
template for an EC2 instance
EC2
Elastic Block Store (EBS)
EC2
persistent storage that exists separate from the VM host
EC2
Instance store
Best use
Cache data, buffers, other temporary content
Result of VM shutdown
Instance store
data in the store is lost
Instance store
Physical location
Instance store
attached to the physical VM host
Instance store
